EXTENSOMETERSE X T E N SO METER S ARE U SED FOR ME ASURING AND/ OR CONT ROLLINGS T R A I N I N TEN SI O N , COMPRESSION AND FAT IGUE T E ST ING AP P LICAT IONS.
M E A SURI N G ON THE SPECI ME N SIGNIFICANT LY INCRE ASE S T HE RE LIABILIT YO F Y OU R DATA. RELYI N G ON T HE CROSSHE AD OR ACT UAT OR MOVE ME NTO F Y OU R M ATERI A LS TEST SY ST E M W ILL ME ASURE T OO MUCH – MACHINE
DEFLECTION, GRIP DEFLECTION, AND POSSIBLE SLIPPAGE ARE ALL CAPTUREDI N T H E LO A D TRA I N DI SPLA CE ME NT ME ASURE ME NT.

Extensometer Table of Contents

2

Introduction
Extensometer Application Index
Extensometer Functional Index
6 Things to Remember when Selecting an Extensometer
Axial Extensometers
High Temperature Extensometers
Specialty Extensometers
MTS Advantage Optical Extensometer (AOX)
MTS Advantage Video Extensometer (AVX)
Laser Extensometer
Other Applications
Clip-On Displacement Gages
Displacement Gages
Extensometer Calibrator
MTS Direct Current Potential Drop (DCPD) Solution

3
4
5
6-9
10-23
24-26
27-31
32-33
34-35
36
37
38
39
40
41

Extensometers
Accuracy is Key

Pioneered to Perfection» MTS extensometer models are available for both staticand dynamic testing

MTS pioneered and perfected the cross-flexure design that
ensures true center point bending of its extensometers.
Precision, resistive-type foil strain gages are bonded to the
MTS cross-flexure to form a 4-arm fully active Wheatstonebridge.

» MTS extensometers meet or exceed requirements forcalibration according to ASTM E83 Class B1 and ISO 9513
Class 0.5 standards» Bridges of 350 ohms and 1000 ohms are used

CAN’T FIND WHAT YOU NEED?

» Output, depending on the unit is 2 mV/V to 6 mV/V

» Our extensometer portfolio contains hundreds andhundreds of additional dynamic rated extensometers.
Contact your local sales representative or applications
engineer to find the model that meets your exact needs» Nominal excitation range from 5 to 12 V DC for room
temperature testing
HIGH PERFORMANCE, HIGH QUALITY» Proven stability over 30+ years of usage» Custom models are also available upon request» Built-in over-travel protection provides repeatable accurate
data from test initiation through specimen failure» Quickly and accurately set-up your extensometer using
the zero set pin or zero stop
» Cross-flexure design ensures the strain gages are
subjected to true center point bending and the sameforce, time after time
» Small, lightweight design – most are under 35 g mass

MTS has the broadest selection of extensometry in the world

MTS Extensometer Repair & Rework
Why go through the process of certifying a new
extensometer when the one you have still does the job?
Many of our extensometers survive tens of thousands oftests without a problem – so if the unit only needs a newzero set pin or cables let us repair it for you. Contact yourlocal sales representative for details.

3Extensometer Application Index
Use this helpful index to determine which extensometers are best
suited for your application. Please contact us for more information.

Application

Extensometer Options		

MetalsTensile (ASTM E8)

632.13/.24 & 634.11/.12/.25/.28/.31; 635; FAX; AOX; AVX

Compression (ASTM E9)632.13/.26/.27 & 634.11/.12/.31; AOX; AVX

KIC - Fracture Toughness (ASTM)

632.02 ASTM Standard; 632.03 MTS Enhanced; 632.65 (High Temperature)

Pre-Cracking (ASTM E399)

632.05 (High Frequency)		

please call

JIC (ASTM E813)

632.03 with Long Travel Option		

38

Crack Growth - Bend (ASTM E399)

632.03		

38

Fatigue Crack Growth (ASTM E647)

632.03 with Long Travel Option; 632.05 (High Frequency)

38

High Cycle Fatigue

632.27 (Low Strain)		

Low Cycle Fatigue (ASTM E606)

632.13/.18/.19/.20 & 634.11/.12/.31 & 632.50/.51/.53/.54

11, 12, 14, 15, 16, 19, 21, 32, 34
11, 12, 13, 16, 32, 34
38

13
11, 12, 16, 24, 25, 30

Low Cycle Fatigue (High Temp)

632.50/.51/.57		

24, 25, (please call for .57)

Low Cycle Fatigue (High Temp)

632.53/.54		

24

Advanced Materials
Bend (MIL SPEC 1942, JIS 1601R)

632.06		

39

Tensile/Compression

632.26; FAX; AOX; AVX		

11, 21, 32, 34

High Temperature (CMC’s MMC’s)

632.5X		

24, 25Ultra High Temperature Bend
Composites

632.70		

please callTensile (ASTM D3039)

632.17/.85 & 634.11/.31; AOX; AVX		

12, 16, 27, 28, 32, 34

Compression (ASTM D695)

632.17 & 634.11/.31; AOX; AVX		

12, 16, 27, 32, 34±45° Shear Test (ASTM D3518)

632.17 & 634.11/.31; AVX		

12, 16, 27, 34

Flexure (ASTM D790)

632.06 & 634.11/.31		

12, 16, 39

Tension/Tension Fatigue (ASTM D3479) 632.17/.85 & 634.11/.31		
Plastics

12, 16, 27, 28

Tensile (ASTM D638)
632.17/.24/.85 & 634.12/.25/.31, FAX; 635, LX 500/1500; AOX; AVX;				Rock Mechanics

4

See Pages

12, 14, 15, 16, 19, 21
22, 27, 28, 32, 34

Triaxial Comp. Strength (ASTM D2664)
Triaxial Creep (ASTM D4406)

632.90/.92		
632.90/.92		

please callplease call

Bio-Materials

632.29 & 634.11/.12/.25/.31, LX 500; FAX; AOX; AVX

Axial/Torsional

632.68/.80		

please call

Immersible Extensometer

632.79		

31

High Temperature
Air Cooled632.53/.54		

24

Water Cooled632.51/.68		

25 (please call for .68)

Uncooled

632.53/.54/.70		

24

Hostile Environments
Fracture Mechanics

632.10 & LX 500/1500		

36

10, 12, 14, 16, 21, 32, 34

Fracture Toughness

632.02/.03; 632.65 (High Temperature)

Pre-Cracking
Bend
Displacement632.05 (High Frequency)		

please call632.06		

39

Crack Growth632.03		

38

High Temperature

632.70		

please call

Fatigue & Fracture
Crack GrowthHigh Cycle
Low Cycle Mechanics
Low Cycle (High Temp)

632.03 with Long Travel Option; 632.05 & 632.65
632.27 (Low Strain)		
632.13/.18/.19/.20 & 634.11/.12/.31		
632.50/.51/.53/.54/.57		

Tensile/Compression TestingTensileCompression

632.13/.24 & 634.11/.12/.25/.28/.31; FAX; 635, AOX; AVX;
632.13/.26/.27 & 634.12/.25/.31; FAX; AOX; AVX;

Poisson’s Ratio

632.18/.19/.20/.23/.85 & 634.12/.25/.31; AOX; AVX

Elastic Limit

632.26/.27/.29		

38

38
13
11, 12, 16, 30
24, 25, 37
11, 12, 14, 15, 16, 19, 21, 22, 32, 34
11, 12, 13, 16, 21, 32, 34
12, 14, 16, 21, 28, 29, 30, 32, 34
10, 11, 13

Extensometer Functional Index

Axial Contact Extensometers
DYNAMIC MODELS (TENSION/COMPRESSION)

Metric Units

US Customary Units
G AGE
L E N GTHM EASURING RANGE:STRAIN ( TRAVEL)M OD E L
NUM BE R

GAGE
LE NGT H

M E ASURING RA NGE :ST RA IN ( T RAVE L)

S EE
PAG E

632.29F-20

3 mm±8% (±0.24 mm)

632.29E-20

0.12 in±8% (±0.0096 in)

10632.29F-30
632.29F-30

5 mm-10%/+30% (-0.5 mm/+1.5 mm)

632.29E-30

0.2 in-10%/+30% (-0.02 in/+0.06 in)

10

6 mm

±4% (±0.24 mm)

632.29E-3X

0.24 in±4% (±0.0096 in)

632.26F-3X

10

8 mm

±6% (±0.48 mm)

632.26E-3X

0.3 in±6% (±0.018 in)

11632.26F-2X

8 mm±15% (±1.2 mm)

632.26E-2X

0.3 in±15% (±0.045 in)

11632.13F-2X

10 mm±15% (±1.5 mm)

632.13E-2X

0.5 in±15% (±0.075 in)

11

M OD E L
N U MB E R

632.26F-4X

12 mm±9% (±1.1 mm)

632.26E-4X

0.5 in±9% (±0.045 in)

11632.27F-3X

25 mm±2% (±0.5 mm)

632.27E-3X

1.0 in±2% (±0.02 in)

13

632.27F-2X

25 mm±4% (±1.0 mm)

632.27E-2X

1.0 in±4% (±0.04 in)

13

634.11F-2X

25 mm+20%/-10% (+5 mm/-2.5 mm)

634.11E-2X

1.0 in+20%/-10% (+0.2 in/-0.1 in)

12634.12F-2X

25 mm+50%/-10% (+12.5 mm/-2.5 mm)

634.12E-2X

1.0 in+50%/-10% (+0.5 in/-0.1 in)

12

634.25F-2X

50 mm+50%/-10% (+25 mm/-5 mm)

634.25E-2X

2.0 in+50%/-10% (+1.0 in/-0.2 in)

14

634.31F-2X

10-50 mmvariable (+4 mm/-2 mm)

634.31E-2X

0.5-2.0 in

variable (+0.2 in/-0.1 in)

16

MONOTONIC MODELS (TENSION ONLY)

Metric Units

US Customary UnitsM OD E L
N U MB E R

GAGELE NGTHM EASURING RANGE:STRAIN ( TRAVEL)

635.25F-05

25 mm+20% (+5 mm)

634.11F-5x

25 mm+20% (+5 mm)

634.12F-5x

25 mm

632.24F-50
635.50F-05
635.50F-10

M OD E L
NUM BE R

GAGE
LE NGT H

M E ASURING RA NGE :ST RA IN ( T RAVE L)

634.11E-5X

1.0 in+20% (+0.2 in)

12+50% (+12.5 mm)

634.12E-5X

1.0 in+50% (+0.5 in)

12

25 mm

+100% (+25 mm)

632.24E-50

1.0 in+100% (+1.0 in)

15

50 mm

+10% (+5 mm)

634.25E-5X

2.0 in+50% (+1.0 in)

14, 1650 mm+20% (+10 mm)

634.28E-24

2.0 in+100% (+2.0 in)

15, 19

S EE
PAG E

19

635.50F-25

50 mm+50% (+25 mm)

19634.25F-5x

50 mm+50% (+25 mm)

14634.28F-24

50 mm+100% (+50 mm)

15635.100F-10

100 mm

+10% (+10 mm)

195

Typical material specimens

66 Things to Remember when Selecting an Extensometer

Extensometers are available in hundreds of models and multiple technologies,
so selecting the correct one can be confusing. An easy way to remember the
relevant criteria for extensometer selection is to think of the acronym S.T.R.A.I.N.

Specimen
Always start with the specimen. Knowing some specimen
properties before starting a test will help you select thebest test equipment.
IDENTIFY THE SPECIMEN’S GAGE LENGTH

Extensometer measurements are taken over the center ofa tensile or fatigue specimen called the gage section. Typicalmaterial specimens have enlarged ends or shoulders forgripping and a gage section with a smaller cross-sectional
area. The gage section is narrower than the ends to ensurethat material deformation occurs along the length with aconstant area cross section. Typically strain is measured
over the middle 70-80% of the gage section. Gage lengths
for contact extensometers typically range 3mm (0.12 in) to
100 mm (~4 in), with longer gage lengths available for specificapplications like rebar testing.
Gage length extender kits modify the gage length of an
existing extensometer to perform strain measurements atlonger or shorter gage lengths.

Gage length
extender kit

CONSIDER THE SPECIMEN’S CROSS-SECTIONAL AREA

Whether the specimen is round or flat determines which
type of knife edges to use with a contact extensometer.
Straight knife edges are standard on many extensometers
and recommended for testing round specimens. Knife edges
with 3-point specimen contact are typically used when
testing flat specimens. They include one single-point and
one double-point contact knife edge. The 3-point specimen
contact creates a plane, ensuring that your extensometeris in line with the axis of your test.
TAKE SPECIMEN PROPERTIES INTO ACCOUNTThe specimen must be strong enough to support the weightof the extensometer. Most room temperature extensometers
are attached to the specimen using springs, rubber bands,or quick attachment kits. Look for lightweight extensometersthat can be secured close to the specimen. The weight andlength of the extensometer create an overturning movementthat must be reacted to by the bottom knife edge. The knifeedge on the bottom will dig into the specimen and the knifeedge on the top will pull away. This problem worsens as
gage length decreases. Next, look for knife edges that are
sharpened on both sides – with a symmetrical point in the
middle of the knife edge. These knife edges will last longer
and are less likely to chip than asymmetrical options.
Inexpensive extensometers are often heavier and longer,
and they are more likely to bend the specimen or slip off.
PREDICT HOW YOUR SPECIMEN WILL FAIL

STRAINIf you plan to test through specimen failure, be sure thatyour extensometer is up to the task. Many extensometers
can be left on the specimen through failure, but backlashfrom high energy breaks can damage the most robust
extensometer designs. Consider removing the extensometer
before failure or using a non-contact extensometer if yourspecimen will break violently.

» Specimen» Test Method» Range» Atmosphere» ISO/ASTM Calibration» Non-contact

7

6 Things to Remember when Selecting an Extensometer

Test Method

Atmosphere

After considering the specimen, knowing your test method
helps narrow down extensometer options.

Consider special needs when testing in extreme
environments.

USE DYNAMICALLY RATED EXTENSOMETERS FOR STATICTESTS, BUT NOT VICE VERSAMOUNT THE EXTENSOMETER OUTSIDE YOUR FURNACE

Not all extensometers are rated for dynamic testing. For
example, if the frequency of the test cycle matches thenatural frequency of the extensometer, the extensometercan begin to vibrate, increasing the noise in the strain
measurement signal. Dynamically rated extensometers
should be designed with high natural frequencies to avoid
vibration. When testing at very high frequencies look foran extensometer that is lightweight with short arms.
Excellent dynamic extensometers use a cross-flexure
design that was originally patented by MTS in the 1970s.
A cross-flexure design ensures that the strain gages inside
the extensometer are subject to true center point bending.
Uniform stresses on the strain gage increase the fatigue
life of the gage and ultimately the entire extensometer. The
cross-flexure design has been employed by almost all
dynamic extensometer manufacturers.

It’s hard to find a contacting extensometer that will workin a furnace above 540°C (1000°F). At these temperatures,the adhesives that attach the strain gage to the cross flexurestart to fail and the test materials soften. Instead of quickattachment kits or rubber bands, extensometers used fortesting at high temperatures are externally mounted withquartz or ceramic rods that extend into the furnace.
Mounting the extensometer outside of the furnace behinda heat shield protects the strain gage from thermal stresswhile still accurately measuring strain. Most models available
include air- or water-cooling options. Water cooling is more
effective at keeping the extensometer’s sensing elements
at a constant temperature and reducing the noise and thermal
drift in the data measured. Some users also develop theirown “homemade” heat shields to protect the extensometerfrom thermal drift in their outside environment.

SAVE MONEY WITH STATIC ONLY EXTENSOMETERS

Extensometers used solely for static testing do not require
the fatigue life of a dynamic extensometer. For example, astrain-gaged element that acts as a single cantilever beam
is cheaper than a cross-flexure design because there arefewer components. The disadvantage is that there is morestress at the root of the beam and the bond holding thestrain gage to the beam may wear out. Extensometers
designed for static testing may have longer arms and are
more likely to vibrate during dynamic testing.

Range
ESTIMATE HOW LONG YOUR SPECIMEN WILL TRAVELTO IDENTIFY YOUR MEASUREMENT RANGE

Measurement range is the maximum travel an extensometercan stretch and still achieve accurate results. Measurement
range is indicated either by an absolute measurement of
distance or a relative measurement of strain range comparedto the gage length. For example, a 50 mm gage length
extensometer will have a measurement range of ±10% or±5 mm. Most premium contacting extensometers aredesigned with an over-travel protection that allows thedevice to extend slightly longer than its rated measurement
range without damaging the components.

8

Extensometer mounted outside furnace

DON’T LET YOUR ROOM TEMPERATURE EXTENSOMETERGET TOO COLDAt extremely low temperatures, the adhesive that bonds thestrain gage to the cross-flexure becomes brittle and may
fracture. Special adhesives are used for extensometers
designed for use in cryogenic applications.

6 Things to Remember when Selecting an Extensometer

SELECT THE ROD THAT ENSURES EXCELLENT CONTACT WITH
THE SPECIMENCHOOSE A TIGHT CLASSIFICATION FOR COMPOSITES TESTS,
LOOSEN UP FOR POLYMER TESTING

Conical-point rods used in conjunction with dimples machined
into the specimen provide very secure contact, but the
dimples also create stress risers in the specimen. V-chiselrods are recommended for round specimens without
dimples. Try to match the angle of the groove in the v-chisel
rod as closely as possible to the circumference of yourspecimen. Chisel edges without v-grooves should be used
when the specimen diameter is greater than 15 mm (0.6 in)or is flat.

New composites being developed for high-temperature
aerospace applications are very stiff, low-strain materials.
The best available extensometer classification should be
used for tests of these materials.

USE AN LVDT-BASED EXTENSOMETER WHEN SUBMERSING IT
IN A LIQUID

It’s incredibly hard to keep a strain gage attached to a crossflexure under water, so most manufacturers recommend
LVDT-based units made of passivated stainless steel.
Dissimilar metals should be avoided or coated with a
non-permeable polymer. The LVDT should be hermeticallysealed and well-supported.

Tensile testing of high-elongation polymers may be
accomplished with a looser specification such as ASTM E83
Class C, where the relative error in percent strain is verysmall compared to the entire measurement range of theextensometer. Often the ASTM or ISO test procedure willdefine the extensometer class desired for testing.

Non-Contact
Initially, video and laser extensometers were used only when
specimens were fragile or when the energy released by
the specimen during fracture could break the extensometer.
Today, these extensometers are rapidly replacing traditional
contacting methods because they can provide more
information.
Now video extensometers can track the movement of pixels
in video recording and correlate that to strain measurement.
Video extensometers with post processing capabilities
even allow for measurement taking after the test.
Digital Image Correlation (DIC) is the natural extension ofvideo extensometry. 2D DIC takes measurements in theaxial and transvers planes of a materials test specimen, and
3D DIC combines images from two video cameras to take3D measurements.

LVDT-based
immersible
extensometer

ISO/ASTM Calibration
CALIBRATE YOUR EXTENSOMETERS TO ISO 9513 OR
ASTM E83 STANDARDSExtensometers are classified based on the maximum errorof strain and/or displacement compared to a known standard.
ISO 9513 gives a class number (0.2, 0.5, etc.) where as
ASTM E83 assigns a class letter (A, B1, B2, C, etc.). One
primary difference between the ASTM and ISO standard is
the fixed error allowed. For example, an ISO 9513 Class 0.5
calibrated extensometer may have a relative error of 0.5%
displacement and a fixed error of ± 1.5µm and an ASTM
E83 class B1 calibrated extensometer may have a relative
error of 0.5% strain and a fixed error of 0.1 mm/mm. Referto the ASTM and ISO standards for more details.

Video extensometer

The Right Extensometer For You
Choosing the correct extensometer becomes much easier
when you remember S.T.R.A.I.N. Start with the specimen
properties, then consider the test method, range, atmosphere,
ISO/ASTM calibration, and non-contact requirements toselect the best option for your application.
9

Axial Extensometers
Miniature Extensometers: <6 mm (<0.23 in) Gage Length» MTS Model 632.29 Extensometers are really small,because sometimes there just is not enough room.
Most models are only 15.3 mm (0.60 in) tall and weighroughly 6 g» Typical applications include testing of small wires,
brittle or fragile materials, small organic specimens, or
expensive materials» Includes a gage fixture for proper gage length setting
and a 1000 Ohm fully-active Wheatstone bridge for highsensitivity» Meets or exceeds requirements for calibration according
to ASTM E83 Class B1 and ISO 9513 Class 0.5 standards

17.8 mm12.0 mm

Gage Length15.3 mm632.29F-30

Metric UnitsGAGE
L E NGTHM EASURING
RANGE( % STRAIN)HEIGHTLE NGT H

T E M P E RAT URE
RA NGE M IN/M A X *ACT IVAT ION
FORCE

3 mm

±8%

15.3 mm

17.8 mm-100°C / 150°C

30 g

632.29F-30

5 mm-10% / 30%

15.3 mm36.8 mm-100°C / 150°C

30 g

632.29F-30

6 mm

±4%

15.3 mm

17.8 mm-100°C / 150°C

30 g

MOD E L632.29F-20

INCLUD E S QUICKAT TACH M E NT KIT FOR
FLAT A ND ROUNDSP E CIM E NS
PART N U M B ER

047-402-102x047-402-108
047-402-104

US Customary Units

MOD E LGAGE
L E NGTHM EASURING
RANGE( % STRAIN)

632.29E-20

0.12 in±8%

HEIGHTLE NGT H

T E M P E RAT URE
RA NGE M IN/M A X *ACT IVAT ION
FORCE

0.60 in

0.70 in-150°F / 300°F

30 g

INCLUD E S QUICKAT TACH M E NT KIT FOR
FLAT A ND ROUNDSP E CIM E NS

*These units may be used at 25°C (50°F) higher than the listed temperatures, but only for durations less than 24 hours.

Quick Attachment Kits
Improve your productivity by
selecting the part number that
includes a quick attachment kit.
Includes adapters for flat andround specimens.

10

PART N U M B ER

047-402-101

Axial Extensometers
Axial Extensometers with <25 mm (<1 in) Gage Length» Models 632.13 and 632.26 extensometers are ideal for
testing small specimens» Measuring range is equally divided into tensile andcompressive range» Includes knife edges and manual attachment fixtures forround specimens

Model 632.26 Axial
Extensometer (shownwith Quick Attach Kit)

» Select the -21 or -31 model for cryogenic testing down to-269°C (-452°F)» Models include quick attachment kits for round and flat
specimens where indicated. Additional quick attachment
kits are available upon request

Model 632.13 Axial
Extensometer (shownwith Flat Specimen
Quick Attach Kit)

» Meets or exceeds requirements for calibration according
to ASTM E83 Class B1 and ISO 9513 Class 0.5 standards
Metric UnitsT E M P E RAT URE
M IN/M A X *ACT IVAT ION
FORCE

632.26F-30-100°C / 150°C

40 g

632.26F-30-100°C / 150°C

40 g

632.26F-31-269°C / 65°C

40 g

047-401-811

632.26F-20-100°C / 150°C

40 g

047-401-804

632.26F-20-100°C / 150°C

40 g

632.26F-23-100°C / 175°C

60 g

047-401-806

632.13F-20-100°C / 150°C

45 g

047-401-004

632.13F-20-100°C / 150°C

45 g

632.13F-21-269°C / 65°C

45 g

047-401-005-100°C / 175°C

65 g

047-401-006

632.26F-40-100°C / 150°C

40 g

047-401-816

632.26F-40-100°C / 150°C

40 g

x

047-401-822

T E M P E RAT URE
M IN/M A X *ACT IVAT ION
FORCEINCLUD E S QUICKAT TACH M E NT KITPA RT N U M B ER

-150°F / 300°F

40 g

047-401-807-150°F / 300°F

40 g

047-401-801

632.13E-20-150°F / 300°F

45 g

632.13E-20-150°F / 300°F

45 g

632.13E-21-452°F / 150°F

45 g

M OD E L

G AGE
L E NGTHM EASURING RANGE( % STRAIN)HEIGHTLE NGT H

8 mm

±6%

17.5 mm

44.5 mm632.26F-3x

632.26F-2x

632.13F-2x

8 mm

10 mm

±15%

±15%

17.5 mm32.8 mm

12 mm

±9%

18.8 mm

PA RT N U M B ER

047-401-810
x

047-401-821

44.5 mmx

047-401-849

41.1 mm632.13F-23
632.26F-4x

INCLUD E S QUICKAT TACH M E NT KIT

x

047-401-010

44.5 mm

US Customary UnitsM OD E L

G AGE
L E NGTHM EASURING RANGE( % STRAIN)HEIGHTLE NGT H

632.26E-3x

0.300 in

±6%

0.69 in

0.175 in

0.300 in±15%

0.69 in

0.175 in632.26E-30
632.26E-2x
632.26E-20
632.13E-2x

632.26E-4x

0.500 in

0.500 in

±15%

±9%

1.29 in

0.74 in1.62 in047-401-001
x047-401-007
047-401-002

1.75 in632.26E-40-150°F / 300°F

40 g

047-401-813

632.26E-41-452°F / 150°F

40 g

047-401-814

632.26E-43-150°F / 350°F

60 g

047-401-815*These units may be used at 25°C (50°F) higher than the listed temperatures, but only for durations less than 24 hours.

11

Axial Extensometers
Axial Extensometers with 25 mm (1 in) Gage Length» Ideal for a variety of applications including metals,
plastics, rubbers, and composites» Low activation force without slipping on your specimen» High natural frequency and sensitivity make them useful
in determining properties during failure» Select the -21 model for cryogenic testing down to-269°C (-452°F)» All part numbers include knife edges, quick attachment
fixtures for flat and round specimens, and standard
elastic attachment kit» Meets or exceeds requirements for calibration according
to ASTM E83 Class B1 and ISO 9513 Class 0.5 standards
Metric Units
MOD E LGAGE
LENGTHM EASURING RANGE( % STRAIN)HEIG H T

LE NGT H

T E M P E RAT URE
M IN/M A X

ACT IVAT ION
FORCEINCLUD E S QUICKAT TACH M E NT KIT

634.11F-2x

25 mm+20% / -10%33.0 mm73.4 mm

PA RT N U M B ER

634.11F-21-269°C / 65°C*

35 g

x

052-251-807

634.11F-24-85°C / 120°C*

35 g

x

052-251-808

634.11F-25-100°C / 175°C

45 g

x

052-251-809

634.11F-54-85°C / 120°C*

35 g

x

052-251-811

634.11F-55-100°C / 175°C

45 g

x

052-251-812

634.12F-21-269°C / 65°C*

45 g

x

051-191-507

634.12F-24-85°C / 120°C*

45 g

x

051-191-508-100°C / 175°C

55 g

x

051-191-509

634.11F-5x

25 mm

634.12F-2x

25 mm

+20%

+50% / -10%33.0 mm33.0 mm73.4 mm82.8 mm634.12F-25
634.12F-5x

25 mm

+50%

33.0 mm82.8 mm634.12F-51-269°C / 65°C*

45 g

x

051-191-510

634.12F-54-85°C / 120°C*

45 g

x

051-191-511

634.12F-55-100°C / 175°C

55 g

x

051-191-512

T E M P E RAT URE
M IN/M A X

ACT IVAT ION
FORCEINCLUD E S QUICKAT TACH M E NT KITPA RT N U M B ER

634.11E-21-452°F / 150°F*

35 g

x

052-251-801

634.11E-24-120°F / 250°F*

35 g

x

052-251-802-150°F / 350°F

45 g

x

052-251-803

634.11E-54-120°F / 250°F *

35 g

x

052-251-805

634.11E-55-150°F / 350°F

45 g

x

052-251-806

634.12E-21-452°F / 150°F*

45 g

x

051-191-501

634.12E-24-120°F / 250°F*

45 g

x

051-191-502

634.12E-25-150°F / 350°F

55 g

x

051-191-503-120°F / 250°F*

45 g

x

051-191-505

US Customary Units
MOD E LGAGE
LENGTHM EASURING RANGE( % STRAIN)HEIGH TLE NGT H

634.11E-2X

1.00 in+20% / -10%

1.30 in

2.89in634.11E-25
634.11E-5X

634.12E-2X

634.12E-5X
634.12E-54

1.00 in1.00 in1.00 in+20%+50% / -10%+50%

1.30 in1.30 in1.30 in2.82 in3.26 in3.26 in*These units may be used at 25°C (50°F) higher than the listed temperatures, but only for durations less than 24 hours.
See the MTS Fundamental Series 635 Extensometers on page 19 for an affordable monotonic only option.

12

Axial Extensometers
Low Strain, High Frequency Axial Extensometers with 25 mm (1 in) Gage Lengths» Small measuring ranges make Model 632.27
extensometers highly sensitive to detecting small
displacement changes in ceramics and ceramic
matrix composites» Extremely short arms and high natural frequencies
ensure that this extensometer measures accurate
strains at up to 150 Hz» Meets or exceeds requirements for calibration according
to ASTM E83 Class B1 and ISO 9513 Class 0.5 standards

Metric Units
INCLUD E S QUICKAT TACH M E NT KITFOR FLAT A ND
ROUND SP E CIM E NS

T E M P E RAT URE
RA NGE
M IN/M A X *ACT IVAT ION
FORCE

632.27F-20-100°C / 150°C

60 g

047-401-904

632.27F-21-269°C / 65 °C

60 g

047-401-905

632.27F-23-100°C / 175°C

90 g

047-401-906-100°C / 150°C

60 g

047-402-004

MODEL

GAGE
L E NGTHM EASURING
RANGE( % STRAIN)

632.27F-2x

25 mm

±4%

632.27F-3x

25 mm

±2%

HEIGHTL E NGT H

33.0 mm

44.1 mm33.0 mm

PA RT N U M B ER

44.1 mm632.27F-30

US Customary Units

MODEL

632.27E-2x

GAGE
L E NGTHM EASURING
RANGE( % STRAIN)HEIGHTLE NGT H

1 in

±4%

1.30 in1.62 in632.27E-20
632.27E-3x

1 in

±2%

632.27E-30

1.30 in

INCLUD E S QUICKAT TACH M E NT KITFOR FLAT A ND
ROUND SP E CIM E NS

T E M P E RAT URE
RA NGE
M IN/M A X *ACT IVAT ION
FORCE-150°F / 350°F

60 g

047-401-901-150°F / 350°F

60 g

047-402-001

PA RT N U M B ER

1.62 in*These units may be used at 25°C (50 °F) higher than the listed temperatures, but only for durations less than 24 hours.

Testing at High Temperatures?
MTS offers a full range of hightemperature extensometers that workwith our chambers and furnaces.
See pages 24-26 for details.

13

Axial Extensometers
Axial Extensometers with 50 mm (2 in) Gage Length» Ideally suited for tensile testing of plastics, rubber,and elastomers» Long travel and mechanical stops enable you to leave
it on the specimen through failure without damaging
the unit» Activation forces as low as 30 g prevent specimen
damage without slipping» Select the -21 or -51 model for cryogenic testing down
to -269°C (-452°F)» All part numbers include hardened knife edges, quickattachment fixtures for flat and round specimens, andstandard elastic attachment kits
» Meets or exceeds requirements for calibration according
to ASTM E83 Class B1 and ISO 9513 Class 0.5 standards

Metric UnitsT E M P E RAT URE
RA NGE
M IN/M A X

ACT IVAT ION
FORCEINCLUD E S QUICKAT TACH M E NT KITFOR FLAT A ND
ROUND SP E CIM E NS

634.25F-21-269°C / 65°C*

30 g

x

051-191-607

634.25F-24-85°C / 120°C*

30 g

x

051-191-608

634.25F-25-100°C / 175°C

45 g

x

051-191-609
051-191-610

MOD E LGAGE
L ENGTHM EASURING
RANGE( % STRAIN)

634.25F-2x

50 mm+50% / -10%634.25F-5x

50 mm

+50%

HEIGHTLE NGT H

58.4 mm

151.4 mm58.4 mm

PA RT N U M B ER

151.4 mm634.25F-51-269°C / 65°C*

30 g

x

634.25F-54-85°C / 120°C*

30 g

x

051-191-611

634.25F-55-100°C / 175°C

45 g

x

051-191-612

T E M P E RAT URE
RA NGE
M IN/M A X

ACT IVAT ION
FORCEINCLUD E S QUICKAT TACH M E NT KITFOR FLAT A ND
ROUND SP E CIM E NS

634.25E-21-452°F / 150°F*

30 g

x

051-191-601

634.25E-24-120°F / 250°F*

30 g

x

051-191-602

634.25E-25-150°F / 350°F

45 g

x

051-191-603

634.25E-51-452°F / 150°F*

30 g

x

051-191-604

634.25E-54-120°F / 250°F*

30 g

x

051-191-605

634.25E-55-150°F / 350°F

45 g

x

051-191-606

See the MTS Fundamental Series 635 Extensometers on page 19 for an affordable monotonic only option.

US Customary Units

MOD E LGAGE
L ENGTHM EASURING
RANGE( % STRAIN)

634.25E-2x

2.00 in+50% / -10%634.25E-5x

2.00 in+50%

HEIGHTLE NGT H

2.3 in5.96 in

2.3 in5.96 in*These units may be used at 25°C (50°F) higher than the listed temperatures, but only for durations less than 24 hours.
See the MTS Fundamental Series 635 Extensometers on page 19 for an affordable monotonic only option.

14

PA RT N U M B ER

Axial Extensometers
Enhanced Travel Axial Extensometers» Designed for plastics, rubber, and elastomer testing,these extensometers can measure up to 100% strain» Utilizes a zero-stop for setting the initial gage length andsimplifying mounting. Simply hold the arms together andattach the extensometer to the specimen» All part numbers include our quick attachment fixtures

Model 632.24

Model 632.28

Metric UnitsM OD E L

GAGE
LE N GTHM EASURING
RANGE( % STRAIN)

632.24F-5x

25 mm

+100%

33 mm

50 mm

+100%

73.7 mm 155.6 mm

HEIGHTLENGT H

123.2 mm632.24F-50
634.28F-2x
634.28F-24

T E M P E RAT URE
RA NGE M IN/M A X *ACT IVAT ION
FORCEINCLUD E S QUICKAT TACH M E NT KITFOR FLAT A ND
ROUND SP E CIM E NS

-100°C /150°C

30 g

x

047-401-602-85°C /120°C

55 g

x

056-355-802

T E M P E RAT URE
RA NGE M IN/M A X *ACT IVAT ION
FORCEINCLUD E S QUICKAT TACH M E NT KITFOR FLAT A ND
ROUND SP E CIM E NS

PA RT N U M B ER

-150°F / 300°F

30 g

x

047-401-601-120°F / 250°F

55 g

x

056-355-801

PA RT N U M B ER

US Customary UnitsM OD E L

632.24E-5x

GAGE
L E N GTHM EASURING
RANGE( % STRAIN)HEIGHTLENGT H

1 in

+100%

1.3 in4.85 in632.24E-50
634.28E-2x
634.24E-24

2 in

+100%

2.9 mm

6.13 in*These units may be used at 25°C (50°F) higher than the listed temperatures, but only for durations less than 24 hours.

15

Axial Extensometers
Axial Extensometers with Multiple Gage Lengths» Measure and control strain on a variety of different
specimen types using this configurable extensometer» Features multiple gage lengths to provide flexibility to run
a variety of tests without recalibration– 9 gage lengths available between 10 mm and 50 mm
in the metric models– 6 gage lengths available in the US customary models» Easy gage length changeover reduces set-up time
between tests» Quick attachment fixtures are included and canaccommodate:

Metric Units– Round specimens with diameters from 2.5 to 14.0 mm(0.10 to 0.56 in)

Available Gage Length

Measuring Range (% Strain,rounded to nearest 1%)

10 mm
15 mm
20 mm
25 mm
30 mm
35 mm
40 mm
45 mm
50 mm

+40% / -20%
+27% / -13%
+20% / -10%
+16% / -8%+13% / -7%+11% / -6%+10% / -5%+9% / -4 %+8% / -4%

– Flat specimens ranging in thickness from 10.5 to
26.0 mm (0.42 to 1.02 in)» Meets or exceeds requirements for calibration according
to ASTM E83 Class B2 and ISO 9513 Class 0.5 standards

US Customary Units
Available Gage Length

Measuring Range (% Strain,rounded to nearest 1%)

0.500 in
0.750 in
1.000 in1.500 in
1.750 in
2.000 in

+40% / -20%
+27% / -13%
+20% / -10%
+13% / -4%+11% / -6%+10% / -5%

Metric Units

MO D E LGAGE
L E NGTH

634.31F-2x

M EASURING
RANGE( % STRAIN)

See above

HEIGHT( M IN/M AX)

LE NGT H

T E M P E RAT URE
RA NGE
M IN/M A X

ACT IVAT ION
FORCEINCLUD E S QUICKAT TACH M E NT KIT FOR
FLAT A ND ROUNDSP E CIM E NS
PA RT N U M B ER

32.5 mm / 59.4 mm 73.8 mm

634.31F-21-269°C / 65°C*

32 g

x

052-251-904

634.31F-24-85°C / 120°C*

32 g

x

052-251-905

634.31F-25-100°C / 175°C

40 g

x

052-251-906

Each 634.31F-2x extensometer includes components to set it to the nine gage lengths listed.
The extensometer weighs between 36 and 42 g, depending on the mass of the components in use.

US Customary UnitsT E M P E RAT URE
RA NGE
M IN/M A X

ACT IVAT ION
FORCEINCLUD E S QUICKAT TACH M E NT KIT FOR
FLAT A ND ROUNDSP E CIM E NS

634.31E-21-452°F / 150°F*

40 g

x

052-251-901

634.31E-24-120°F / 250°F*

40 g

x

052-251-902

634.31E-25-150°F / 350°F

50 g

x

052-251-903

MOD E L634.31E-2x

G AGE
L E NGTHM EASURING
RANGE( % STRAIN)

See above

HEIGHT( M IN/M AX)

LE NGT H

1.28 in / 2.34 in

2.9 inEach 634.31E-2x extensometer includes components to set it to the nine gage lengths listed.
The extensometer weighs between 36 and 42 g, depending on the mass of the components in use.

16

PA RT N U M B ER

Accessories for Axial Extensometers
Gage Length Extenders

Expand the Range of Use of Your Existing Extensometer» Gage length extender kits modify the gage length ofexisting extensometers to perform strain measurementson specimens which have non-standard gage lengths» Travel of the extensometers is not affected by theaddition of extenders, but the strain measuring range
will be reduced» Each extender/extensometer combination requires
separate calibration

Metric UnitsE X T E ND E R MO D E L

GAGE LENGTH WITH EXTENDERE X T E NSOM E T E R M OD E LS ( T YP E )634.15C-30

50 mm

634.11/12 (F)PA RT N U M B ER

051-191-901

634.15C-31

100 mm634.11/12 (F)051-191-902

634.15C-32

150 mm634.11/12 (F)051-191-903

634.15C-33

200 mm634.11/12 (F)051-191-904

634.15C-37

Kit of 50, 100, 150, & 200 mm extenders

Kit of 50, 100, 150, & 200 mm extenders

051-191-905

634.15C-40

100 mm634.25 (F)051-191-908

634.15C-41

150 mm634.25 (F)051-191-909

634.15C-42

200 mm634.25 (F)051-191-910

634.15C-47

Kit of 100, 150, & 200 mm extenders

Kit of 100, 150, & 200 mm extenders

051-191-911

US Customary UnitsE X T E ND E R MO D E L

GAGE LENGTH WITH EXTENDERE X T E NSOM E T E R M OD E LS ( T YP E )634.15B-30

2 in

634.11/12 (E)PA RT N U M B ER

051-191-801

634.15B-31

4 in

634.11/12 (E)051-191-802

634.15B-32

6 in

634.11/12 (E)051-191-803

634.15B-33

8 in

634.11/12 (E)051-191-804

634.15B-37

Kit of 2, 4, 6, & 8 in extenders

Kit of 2, 4, 6, & 8 in extenders

051-191-805

634.15B-40

4 in

634.25 (E)051-191-808

634.15B-41

6 in

634.25 (E)051-191-809

634.15B-42

8 in

634.25 (E)051-191-810

634.15B-47

Kit of 4,6, & 8 in extenders

Kit of 4,6, & 8 in extenders

051-191-811

Extenders for additional models and gage lengths available upon request.

Quick Attachment Kits & Replacement Parts

D E SCRIP T ION

PA RT N U M B ER

» Improve your productivity by buying a Quick
Attachment Kit for your extensometer

Quick Attach Spring Set (includes 2 springs)
For all 634.xx models except 634.31F

047-201-911» Includes adapters for flat and round specimens

For Model 634.31F

047-201-920

Spring Retainer (holds 1 spring in place)055-467-601

Extenders for additional models and gage lengths available upon request.

17

Accessories for Axial Extensometers
Specimen Attachment Kits

Large Diameter Specimen Attachment Kit

Replacement Knife Edges for Extensometers» Recommended for specimens larger than 32 mm(1.25 in) in diameter» Replacements for those provided with extensometers» Provides a more effective attachment angle andincreases the normal force pressing the extensometer
onto the specimen» Round specimen knife edges have a 90° included angle» Increases stability of the extensometer on the specimen» Stainless steel with a Rockwell hardness of Rc 58 to 60» Flat specimen knife edges provide three point specimen
contact by means of one single point and one double
point contact knife edge

» Includes two remote spring
attachment bracket
assemblies that mount on theextensometer arms
and an assortment of 16
tension springs» For use with models
632.11/.12/.25 and634.11/.12/.25

Pictured are straight edges
used with round specimens
and three-point edges foruse with flat specimens.

Flat Specimen Attachment Kit – Wire Form Method

Flat Specimen Attachment Kit – Disc Method» Mounts a heavy duty, remote springbracket assembly to the arms of theextensometer» Primarily used for specimens lessthan 12 mm (0.5 in) in width» Formed wire reacts with the force of thesprings directly across fromthe knife edges» Effectively makes specimen
appear as a round specimen forextensometer mounting
purposes634.X XPA RT NUM BE R

632.XXPA RT N U M B ER

053-063-001

038-863-801

Flat Specimen Attachment Kit – Disc Method

100-020-108

034-505-201

Flat Specimen Attachment Kit – Wire Form Method, for specimens up to 25 mm (1 in) wide

100-058-679

D E S C R IP T ION

Large Diameter Kit for 63x.11/.12/.25

Extenders for additional models and gage lengths available upon request.

18

MTS Fundamental Series 635 Extensometers
Monotonic Extensometers for Tensile Testing» Series 635 extensometers are specially designed for
popular monotonic axial tensile strain measurement.
They are an economic choice, ideal for large volume
QA/QC testing.

» Not intended for immersion in water or other liquids» Hardened, replaceable knife edges for flat and round
specimens are included» Patented MTS quick-attach springs for fast and easy
specimen attachment are included» Features proprietary strain gaged elements made from
special heat-treated alloy» Standard 1.5 m (60 in) cable is included» Ground profile, dual-member flexure provides for very
low activation force with excellent strength» Typical Linearity1 is 0.08% of range» True center-point bending resulting in low hysteresis andexceptionally accurate strain readings» Accuracy2 designed to meet ASTM E83 Class B1 andISO 9513 Class 0.5 standards» Mechanical stops can be attached through specimen
failure without damaging the unit

» Temperature Range is 4°C to 50°C (40°F to 120°F)» Applications: Axial tensile strain measurements forlarge volume QA/QC testing» Zero-set pin enables accurate and consistent determinationof the initial gage length

Axial Extensometers for Monotonic Testing Only, MTS Fundamental Series 635
GAG E LENGTHM AXIM UM
TRAVELM AXIMUM
STRAINLE NGT H ( FROM KNIFE E D GE
TO BACK OF H OUSING)

H E IGH T( FROM BOT TOM TO TOP )PA RT
NU M B ER

635.25F-05

25 mm

+5 mm

20%

50 mm

+5 mm

10%

635.50F-10

50 mm+10 mm20%

635.50F-25

50 mm+25 mm50%

635.100F-10

100 mm+10 mm10%635.100F-25

100 mm+25 mm25%

77.5 mm (3.1 in)
77.5 mm (3.1 in)
77.5 mm (3.1 in)
153.7 mm (6.1 in)
77.5 mm (3.1 in)
153.7 mm (6.1 in)

39.6 mm (1.1 in)
59.2 mm (2.3 in)
61.5 mm (2.4 in)
69.1 mm (2.7 in)
111.8 mm (4.4 in)
119.1 mm (4.7 in)

057-863-506

635.50F-05

MODEL

057-863-505
057-863-504
057-863-503
057-863-502
057-863-501

Notes:
1 Linearity stated is for ascending data and is the deviation from best fit straight line thru zero expressed as a percent of full scale.
2 Calibrations are separate. These extensometers leave the factory with a quality validation and verification by sampling three measurement
points to validate performance. The 635 series extensometers are intended to meet ASTM class B-1 and ISO class 0,5.

19

20

FundamentalTM Automatic Extensometer (FAX)
Automatic Extensometer for Criterion® and Exceed® Universal Test Systems» FAX1352 automatic extensometer is compatible
with MTS Criterion and Exceed Universal Test
Systems» Designed for longevity» Optimized for high-volume testing of single gagelength specimens» Rotational Mount allows the operator to quickly
rotate the FAX out of the test area for easy accessto the specimen» Ideal for axial strain measurement for tensile testingon Universal Test Systems

FAX1352

Rotational Mounts

Axial Model SpecificationsMODEL

A R M LENGTH

FAX1352

350 mmGAGE
LENGTH*RELATIVE
ERROR

M E ASURING
RA NGEA X IA L
RE SOLUT ION

10-200 mm(0.4-7.9 in)±1%0-80 mm(0-3.1 in)≤0.2 µm

T H ICKNE SS OR D IA M E T E R R A N G E

Flat: 0.2-40 mm (0.0008-1.57 in)Round: 0.2-40 mm (0.0008-1.57 in)* Recalibration is required whenever the specimen gage length is changed.

21

AdvantageTM High Elongation Extensometer (AHX850)
High Elongation Extensometer for Criterion® Universal Test Systems» Accurately measure strain in specimens prone to large
displacement» Displacement up to 850 mm (33.5 in)» Six preset gage lengths: 10 mm (0.4 in), 20 mm (0.8 in),
25 mm (1.0 in), 50 mm (2.0 in), 75 mm (2.95 in),
100 mm (3.9 in)
Width
90 mm
(3.54 in)» High resolution optical digital encoder eliminates noise,signal drift, and output changes» Balanced design with optimized arm and head weights» Swings away from test area when not in use» Optional fixed or rotational mount» Compatible with MTS Criterion® Universal Test Systems» Meets or exceeds requirements for calibration according
to ASTM E83 Class B1 and ISO 9513 Class 0.5 standards» The gripping force is applied using adjustable springs

Travel850 mm(33.5 in)
Height1025 mm(40.4 in)Depth
310 mm(12.2 in)

MOD E LSTA N DARD GAGELENGTHM EASURING
RANGE

10 mm to 100 mm(0.4 in to 3.9 in)

10 to 850 mm(0.4 to 33.4 in)

DEPTH

W E IGH T

T E M P E RAT URE
RA NGERE SOLUT ION

A RM
OP E NING

1025 mm 310 mm(40.4 in) (12.2 in)

6 kg(13.2 lbs)

5°C to 50°C
(41°F to 122°F)

0.006 mm(0.0002 in)

30 mm 100-512-885(1.18 in)

HEIG H T

PA RT
N U M B ER

AHX85022

Long Travel Extensometer (LTX850)
High Elongation Extensometer for Exceed® Universal Test Systems» Used to measure displacement of materials, such as
polymers and elastomers, which exhibit high elongation
while in tension» Durable high strength aluminum structure

Width
90 mm
(3.54 in)» Dual independent digital input channels for upper andlower arms ensure accurate and reliable measurement» Changeable knife edges, adjustable gripping forces, andbalanced head and arm weight allow smooth following ofmaterial strain change with minimal stickiness» Five preset gage lengths: 10 mm (0.4 in), 20 mm (0.8 in),
25 mm (1.0 in), 50 mm (2.0 in), 75 mm (2.95 in)» Choose fixed or rotational mounts» Compatible with Exceed® Universal Test Systems» Meets or exceeds requirements for calibration according
to ASTM E83 Class B1 and ISO 9513 Class 0.5 standards» The gripping force is applied using adjustable springs

Travel850 mm(33.5 in)
Height1030 mm(40.6 in)Depth
255 mm(10 in)MODELSTA N DA R D GAGEL E N G TH

M EASURINGRANGE

HEIGHTDEPTH

W E IGH T

T E M P E RAT URE
RA NGEA LLOW E D
SP E CIM E N SIZ E

1030 mm(40.6 in)

255 mm(10 in)5.3 Kg(11.7 lb)

5°C to 50°C
(41°F to 122°F)

Width: 20 mm (0.8 in)Thickness: 30 mm (1.2 in)

PA RT
N U M B ER

LTX85010 mm to 75 mm 10 to 850 mm(0.4 in to 2.95 in) (0.4 to 33.4 in)

100-542-797

23

High Temperature Extensometers
Air Cooled High Temperature Extensometers» Designed for measuring axial strain in high temperaturetension, compression, and through-zero fatigue testing
applications up to 1200°C (2200°F)» Includes ceramic extension rods that extend into the furnaceand minimize rod creep, thermal expansion errors, andconduction losses from the specimen» Contact force varies by model. Select from models with
100 g, 300 g, 400 g, or 780 g contact forces» Air cooling required» Additional models and rod geometries available upon request» Meets or exceeds requirements for calibration according to
ASTM E83 Class B1 and ISO 9513 Class 0.5 standards
Metric UnitsGAGE
LENGTHMO D E LO P T ION

632.50F-08

006,080 10 mm

M EASURING RANGE( % STRAIN)M A X IM UM
TE M P E RAT URE

CONTACTFORCECE RA M IC E X T E NSIONROD S INCLUD E D+20%/-10%1200°C

780 g

Qty 4, V-chisel Edge Rods, 3.50 mm (.138 in)rod diameter, 85 mm (3.35 in) long
Qty 4, V-chisel Edge Rods, 2.0 mm (.0787 in)rod diameter, 85 mm (3.35 in) long
Qty 4, V-chisel Edge Rods, 3.50 mm (.138 in)rod diameter, 85 mm (3.35 in) long
Qty 4, V-chisel Edge Rods, 3.50 mm (.138 in)rod diameter, 85 mm (3.35 in) long
Qty 4, V-chisel Edge Rods, 3.50 mm (.138 in)rod diameter, 85 mm (3.35 in) long
Qty 4, V-chisel Edge Rods, 3.50 mm (.138 in)rod diameter, 85 mm (3.35 in) long
Qty 4, V-chisel Edge Rods, 2.0 mm (.0787 in)rod diameter, 85 mm (3.35 in) long
Qty 2, V-chisel Edge Rods, 3.50 mm (.138 in)rod diameter, 85 mm (3.35 in) long
Qty 4, V-chisel Edge Rods, 3.50 mm (.138 in)rod diameter, 85 mm (3.35 in) long
Qty 4, V-chisel Edge Rods, 3.50 mm (.138 in)rod diameter, 85 mm (3.35 in) long
Qty 4, V-chisel Edge Rods, 3.50 mm (.138 in)rod diameter, 94 mm (3.7 in) long

632.54F-11

–

12 mm

+20%/-10%1200°C

100 g

632.53F-14

–

12 mm

+20%/-10%1200°C

260 g

632.53F-14

–

12 mm

+20%/-10%1200°C

300 g

632.53F-14

–

12 mm

+20%/-10%1200°C

400 g

006,080 12 mm+20%/-10%1200°C780 g

632.50F-04
632.54F-11

–

25 mm

+10%/- 5%

1200°C

100 g

632.53F-11

–

25 mm

+20%/-5%1200°C

260 g

632.53F-11

–

25 mm

+10%/-5%1200°C

300 g

632.53F-11

–

25 mm

+10%/-5%1200°C

400 g

006,077 25 mm+15%/-15%

1200°C

400 g

632.50F-01

PA RT N U M B ER

047-402-5381
047-404-3041
047-404-1041
047-404-105 1
047-404-106 1
047-402-539 1
047-404-3031
047-404-1101
047-404-1111
047-404-1121
047-402-5481

US Customary UnitsO P TIONGAGE
LENGTHM EASURING RANGE( % STRAIN)M A X IM UM
T E M P E RAT URE

CONTACTFORCECE RA M IC E X T E NSIONROD S INCLUD E D

632.54E-14–

0.50 in+20%/-10%

2200°F

100 g

Qty 4, V-chisel Edge Rods, 2.0 mm (.0787 in)rod diameter, 85 mm (3.35 in) long047-404-3021

632.53E-14–

0.50 in+20%/-10%

2200°F

260 g

Qty 4, V-chisel Edge Rods, 3.50 mm (.138 in)rod diameter, 85 mm (3.35 in) long047-404-1011

632.53E-14–

0.50 in+20%/-10%

2200°F

300 g

Qty 4, V-chisel Edge Rods, 3.50 mm (.138 in) 047-404-102 1
rod diameter, 85 mm (3.35 in) long

632.53E-14–

0.50 in+20%/-10%

2200°F

400 g

Qty 4, V-chisel Edge Rods, 3.50 mm (.138 in)rod diameter, 85 mm (3.35 in) long

632.50E-04 006.080

0.50 in+20%/-10%

2200°F

780 g

Qty 4, V-chisel Edge Rods, 3.50 mm (.138 in) 047-402-5251
rod diameter, 85 mm (3.35 in) long

632.54E-14–

1.00 in+10%/-5%2200°F

100 g

Qty 4, V-chisel Edge Rods, 3.50 mm (.138 in)rod diameter, 85 mm (3.35 in) long047-402-3011

632.53E-11–

1.00 in+10%/-5%2200°F260 g

047-404-1071

632.53E-11–

1.00 in+10%/-5%2200°F

300 g

632.53E-11–

1.00 in+10%/-5%2200°F

400 g

Qty 4, V-chisel Edge Rods, 3.50 mm (.138 in)rod diameter, 85 mm (3.35 in) long
Qty 4, V-chisel Edge Rods, 3.50 mm (.138 in)rod diameter, 85 mm (3.35 in) long
Qty 4, V-chisel Edge Rods, 3.50 mm (.138 in)rod diameter, 85 mm (3.35 in) long

632.50E-01

006,077

1.00 in+15%/-15%

2200°F

400 g

MO D E L

1 Mount is not required when using with 653.xxB furnace, for other installations contact MTS

24

PA RT
N U M B ER

047-402-1031

047-404-1081
047-404-1091

Qty 4, V-chisel Edge Rods, 3.50 mm (.138 in) 047-402-5471
rod diameter, 94 mm (3.7 in) long

High Temperature Extensometers
Water Cooled High Temperature Extensometers» Designed for measuring axial strain in high temperaturetension, compression, and through-zero fatigue testing
applications up to 1200°C (2200°F)» Water cooling is more effective at keeping theextensometer body at a constant temperature andreducing noise in the data measured» Includes ceramic extension rods that extend into thefurnace and minimize rod creep, thermal expansion
errors, and conduction losses from the specimen» Contact force varies by model. Select from models with
400 g or 780 g contact forces.
» Water cooling required» Additional models and rod geometries available
upon request» Meets or exceeds requirements for calibration according
to ASTM E83 Class B1 and ISO 9513 Class 0.5 standards

Metric UnitsM OD E L

OP T IONGAGE
LENGTHM EASURING RANGE( % STRAIN)M A X IM UM
T E M P E RAT URE

CONTACTFORCECE RA M IC E X T E NSIONROD S INCLUD E D

632.51F-04

006,080

12 mm+20% / -10%1200°C780 g

632.51F-01

006,077

25 mm+15% / -10%1200°C

400 g

Qty 2, V-chisel Edge Rods,
3.50 mm (.138 in) rod diameter,
85 mm (3.35 in) long
Qty 2, V-chisel Edge Rods,
3.50 mm (.138 in) rod diameter,
94 mm (3.7 in) long

PA RT N U M B ER

047-402-6511

047-402-6521

US Customary UnitsM OD E L

OP T IONGAGE
LENGTHM EASURING RANGE( % STRAIN)M A X IM UM
T E M P E RAT URE

CONTACTFORCECE RA M IC E X T E NSIONROD S INCLUD E D

632.51E-04

006,080

0.50 in+20% / -10%

2200°F780 g

632.51F-01

006,077

1.00 in+15% / -10%1200°C

400 g

Qty 2, V-chisel Edge Rods,
3.50 mm (.138 in) rod diameter,
85 mm (3.35 in) long
Qty 2, V-chisel Edge Rods,
3.50 mm (.138 in) rod diameter,
94 mm (3.7 in) long

PA RT N U M B ER

047-402-6501

047-402-6531

1 Mount is not required when using with 653.xxB furnace, for other installations contact MTS.

25

High Temperature Extensometers
Elevated Temperature Axial Extensometer for Use in Chambers» Designed for measuring axial strain in elevated temperature
testing environments without external cooling» Provides stable output, with low creep, for both tension andfatigue testing applications at temperatures from 40°C to
540°C (100° to 1000°F) and up to 85% relative humidity.
» Fatigue rated up to 30 Hz» Compatible with controllers that use 494 or 493 series
hardware. Not available for MTS electromechanicalsystems» Packed in a rugged storage case that contains the
instrument, converter module, spare parts, springs,
attachment devices, and tools

Metric Units
MO D E L

633.11M-15

GAGE
LENGTHM EASURING RANGE( % STRAIN)H E IGH T

LE NGT H

T E M P E RAT URE RA NGE
M IN/M A X *ACT IVAT ION
FORCEIN C L U D ES
AT TAC H M ENT K I T

25.00 mm

+16 / -8%

34.7 mm35.8 mm

40°C / 540 °C

60 g

x

US Customary Units
MO D E LGAGE
L ENGTHM EASURING RANGE( % STRAIN)H E IGH T

LE NGT H

T E M P E RAT URE RA NGE
M IN/M A X *ACT IVAT ION
FORCEIN C L U D ES
AT TAC H M ENT K I T

633.11L-15

1.000 in+16 / -8%

1.4 in2.2 in100°F to 1000°F

60 g

x

*May be used 25°C (50°F) higher than specified for short durations less than 24 hours.

26

Specialty Extensometers
Averaging Axial Extensometer» Simultaneously measures axial deflection on the opposite
sides of the specimen and then sums those measurements
to provide a single average strain output» Measuring strain on both sides of the specimen reduces
errors in strain measurements caused by bending strains,resulting in more accurate elastic modulus values» Units can be used to perform testing on solid or tubular
composite or metal specimens of almost any configuration» Easily adjustable from 3 mm to 32 mm (0.12 in to 1.26 in)in diameter for round specimens» Easily adjustable for up to 51 mm (2 in) width for flat
specimens» Low strain range detects small displacement changes inceramics and composites» Meets or exceeds requirements for calibration according
to ASTM E83 Class B1 and ISO 9513 Class 0.5 standards

Metric UnitsGAGE
L ENGTHM EASURING RANGE( % STRAIN)

632.17F-40

10 ±0.05 mm+12% / -5%

63.5 mm101.6 mm632.17F-20

25 ±0.05 mm+5% / -2%

63.5 mm101.6 mmGAGE
L ENGTHM EASURING RANGE( % STRAIN)H E IGH T

LE NGT H

DEPTH

632.17E-30

0.5 ±0.002 in+10% / -4%

2.5 in4.0 in632.17E-20

1.0±0.002 in+5% / -2%

2.5 in4.0 inMODEL

H E IGH T

LE NGT H

T E M P E RAT URE RA NGE
M IN/M A X *PA RT N U M B ER

38.1 mm-100°C / 150°C

047-404-80238.1 mm-100°C / 150°C

047-401-102

T E M P E RAT URE RA NGE
M IN/M A X *PA RT N U M B ER

1.5 in-150°F / 300°F

047-404-801

1.5 in-150°F / 300° F

047-401-101

DEPTH

632.17F-x0

US Customary Units
MODEL

632.17E-x0*These units may be used at 25°C (50 °F) higher than the listed temperatures, but only for durations less than 24 hours.

27Specialty Extensometers
Biaxial Extensometer» Measure the cross-sectional, diametral, or average axial
strain with a single extensometer» Readily attach to many shapes and sizes of specimens» If you are worried about mechanical crosstalk between theaxial and transverse channels, select Model 632.85x-05.
This model operates only with conical point contacts.
» If you have very thin specimens (i.e. sheet metal), selectModel 632.85x-14. This model is designed for use witheither conical point or v-chisel specimen contacts. Two
output signals require separate conditioning for the
averaged axial and the cross-sectional signals.
» Meets or exceeds requirements for calibration according
to ASTM E83 Class B1 and ISO 9513 Class 0.5 standards

Metric Units

MO D E LGAGE
L ENGTHAXIALTRAVEL

TRA NSVE RSE
T RAVE L

H E IGH T

LE NGT H

DEPTH

T E M P E RAT URE RA NGE
M IN/M A X *PA RT N U M B ER

632.85F-xx
632.85F-05

25±0.05 mm+1.25 to -0.50 mm±0.5 mm101.6 mm

38.1 mm101.6 mm

-100°C / 150°C

047-403-502

632.85F-1425±0.05 mm+1.25 to -0.50 mm

0.5 mm101.6 mm

38.1 mm101.6 mm

-100°C / 150°C

047-403-506

AXIAL
TRAVEL

TRA NSVE RSETRAVE LH E IGH T

LE NGT H

DEPTH

T E M P E RAT URE RA NGE
M IN/M A X *PA RT N U M B ER

632.85E-05 1.000±0.002 in+0.050 to -0.020 in±0.02 in

4.0 in1.5 in4.0 in-150°F / 300°F

047-403-501

632.85E-14 1.000±0.002 in+0.050 to -0.020 in±0.02 in

4.0 in1.5 in4.0 in-150°F / 300°F

047-403-505

US Customary Units

MO D E LGAGE
L ENGTH

632.85E-xx*These units may be used at 25°C (50 °F) higher than the listed temperatures, but only for durations less than 24 hours.

28Specialty Extensometers
Cross-Sectional Strain Extensometer» Measures cross-sectional strain and when used with along gage length or enhanced travel extensometers (pages
14 and 15), it is ideal for determining the “R” value forplastics and sheet metal» Free floating feature enables it to travel with the specimen
as it is elongated during axial loading

Metric Units

MODEL

GAGE WIDTHTRAVELSP E CIM E N
T H ICKNE SS

T E M P E RAT URE RA NGE
M IN/M A X *CLA M PFORCE

PA RT N U M B ER

632.23F-x0
632.23F-20

12.7 ± 0.5 mm-4 to 0 mm

0.5 to 5 mm

-100°C / 150°C

400 g

047-401-502

632.23F-30

20 ± 1 mm-4 to 0 mm

0.5 to 5 mm

-100°C / 150°C

400 g

047-401-504

632.23F-30

25 ± 1 mm-4 to 0 mm

0.5 to 5 mm

-100°C / 150°C

400 g

047-401-506

GAGE WIDTHTRAVELSP E CIM E N
T H ICKNE SS

T E M P E RAT URE RA NGE
M IN/M A X *CLA M PFORCE

PA RT N U M B ER

0.5 ± 0.02 in-0.16 to 0 in

0.02 to 0.2 in-150°F / 300°F

US Customary Units

MODEL

632.23E-x0
632.23E-20

400 g
400 g

047-401-501*These units may be used at 25°C (50 °F) higher than the listed temperatures, but only for durations less than 24 hours.

29Specialty Extensometers
Diametral Extensometer» Ideal for measuring diametral strain in tension orcompression» Designed for measuring cross sectional area changes onround specimens and helping to measure Poisson’s ratio» Models available for testing at ambient, cryogenic, andelevated temperatures» Contact MTS for options for transverse measurementsof specimens with rectangular cross sections

Metric Units
MO D E L

GAGE DIAM ETERTRAVELHE IGH T

LE NGT H

632.18F-2x

6.1 mm to 26 mm±2 mm

12.7 mm

191 mm632.18F-20
632.18F-21
632.19F-2x

3.6 mm to 13 mm±1 mm

12.7 mm

191 mm2 mm to 7.9 mm±0.5 mm

12.7 mm

191 mm632.19F-20
632.20F-2x
632.20F-20

T E M P E RAT URE RA NGE
M IN/M A X *CLA M PFORCE

PA RT N U M B ER

-100°C / 150 °C

400 g

047-401-204-265°C / 65° C

400 g

047-401-205-100°C / 150 °C

400 g

047-401-304-100°C / 150 °C

400 g

047-401-404

T E M P E RAT URE RA NGE
M IN/M A X *CLA M PFORCE

PA RT N U M B ER

-150°F / 300 °F

400 g

047-401-201-150°F / 300 °F

400 g

047-401-301-150°F / 300 °F

400 g

047-401-403

US Customary Units
MO D E L

GAGE DIAM ETERTRAVELHE IGH T

LE NGT H

632.18E-2x0.24 in to 1.02 in±0.08 in

0.5 in7.5 in0.14 in to 0.52 in±0.04 in

0.5 in7.5 in0.14 in to 0.31 in±0.02 in

0.5 in7.5 in632.18E-20
632.19E-2x
632.19E-20
632.20E-2x
632.20E-20*These units may be used at 25°C (50 °F) higher than the listed temperatures, but only for durations less than 24 hours.

30Specialty Extensometers
Immersible Extensometer» Provide accurate strain measurement while totally
immersed in water or saline solution» Designed for both tension and fatigue testing up to 30 Hz» Accurately translates specimen displacement to thehermetically sealed LVDT using a patented parallel flexuresystem» Gage Length extenders to extend gage length to
200 mm (8.0 in)» AC conditioning required

Metric UnitsMODEL

GAG E LENGTHM EASURING RANGE( % STRAIN)H E IGH T

LE NGT H

T E M P E RAT URE RA NGE
M IN/M A X *ACT IVAT ION
FORCEPA RT N U M B ER

25 mm

±20%

76 mm

69.1 mm-15°C to 85°C

60 g

050-855-602

G AGE LENGTHM EASURING RANGE( % STRAIN)H E IGH T

LE NGT H

T E M P E RAT URE RA NGE
M IN/M A X *ACT IVAT ION
FORCEPA RT N U M B ER

1 in

±20%

3.0 in2.7 in4°F to 185°F

60 g

050-855-601

632.79F-01

US Customary UnitsM OD E L

632.79E-01

31

MTS Advantage™ Optical Extensometer (AOX)

As simple to use as a traditional contacting extensometer,
the MTS Advantage™ Optical Extensometer (AOX) also
provides all the precision and productivity advantages of anon-contacting strain measurement solution. Whether you
are measuring QC tensile strength, long-term fatigue or crack
growth, the MTS AOX optics packages can accommodate
everything from the fine resolution measurements needed
for low modulus ceramic and metallic materials, to thehigh-elongation requirements (>1000% strain) for viscoelastic
plastic and elastomer materials. The MTS AOX is also an
ideal solution for evaluating challenging specimens, suchas those created from foils, fine wires and polymer films.

Advantages of Optical Extensometry
Faster Test Completion

Similar to a contacting extensometer, once the MTS AOX
is set up, it is always measuring. This capability saves time,
especially when running repetitive tests. Other productivity
enhancements include:» Faster Throughput: Instant Reset feature auto-starts
strain measurement for the next specimen, increasing
productivity for repetitive QC testing» Real-time Digital Output: High-speed data stream with
software tools for control and status» No Post-processing Required: Even when using thehighest data rates, all data is sent directly to your test
system.
Improved Accuracy

From pre-test calibration and alignment to reliablemeasurement, the MTS AOX provides the accuracy
you require:» A2LA Accredited Factory Calibration: Fully calibratedusing comprehensive processes to correct for scaling,skew, lens distortion, and uneven lighting» Laser-Assist Alignment System: Provides an instantvisual check for specimen alignment and optics
positioning» Retractable, High-stiffness Mounting: Maintains
maximum dynamic range and vibration avoidance» Reliable, Automatic Mark Detection: Accurate
tracking of bright or dark marks beyond 1000%
strain and speeds >1500 mm/second» Precision Telecentric Lens Option: Helps compensate
for out-of-plane measurement errors» Robust Strain Control: Built-in high-speed 16-bit
analog output; not susceptible to unpredictable
cyclic bias errors.
Simple Set-up & Operation

The MTS AOX runs on the test system computer andtherefore does not require an additional computer andmonitor. Other ways this extensometer simplifies testing:» No Grids or Bars Required for Pre-test Calibration:
Can start your test sooner» Multi-line Specimen Marking: Optional methods
automatically identify and report the region of highest
strain concentration, in real-time» Wide Range of Filter and Optical Settings: Easily
optimize performance for many different materials
and specimens

32

Precision Telecentric Lens Packages
AOX PT lens systems are recommended for precision strain measurements (used for material strains <10%, normally metals, composites, etc.)

Typical Gage Lengths vs Maximum Strain/Travel

Precision Telecentric Lens Systems
Model Number

Field-of-View (FOV)

Working Distance (WD)AOX-52PT-System

52 mm

150 mmModel Number

Field-of-View (FOV)

Working Distance (WD)AOX-78PT-System

78 mm

200 mmModel Number

Field-of-View (FOV)

Working Distance (WD)AOX-130PT-System

130 mm

210 mmGage Length

Max Strain

Max Elongation

10 mm
12 mm
20 mm
25 mm
30 mm
40 mm

320%
250%
110%
65%
40%
5%

32 mm
30 mm
22 mm
17 mm
12 mm
2 mm

Gage Length

Max Strain

Max Elongation

10 mm
12 mm
20 mm
25 mm
50 mm
65 mm

580%
470%
240%
170%
35%
5%

58 mm
56 mm
48 mm
43 mm
18 mm
3 mm

Gage Length

Max Strain

Max Elongation

10 mm
12 mm
25 mm
50 mm
75 mm
100 mm≥1000%
900%
380%
140%
60%
20%

110 mm
108 mm
95 mm
70 mm
45 mm
20 mm

Conventional Entocentric Lens Packages
AOX CE lens systems are recommended for higher strain measurements (used for material strains >10%, normally plastics, elastomers, etc.)
Typical Gage Lengths vs Maximum Strain/Travel

Conventional Entocentric Lens Systems
Model Number

Field-of-View (FOV)

Working Distance (WD)AOX-200CE-System

200 mm

220 mmModel Number

Field-of-View (FOV)

Working Distance (WD)AOX-250CE-System

250 mm

280 mmModel Number

Field-of-View (FOV)

Working Distance (WD)AOX-500CE-System

500 mm

270 mmGage Length

Max Strain

Max Elongation

10 mm
25 mm
50 mm
75 mm
100 mm
150 mm
180 mm>1000%
660%
280%
150%
90%
25%
5%

180 mm
165 mm
140 mm
115 mm
90 mm
40 mm
10 mm

Gage Length

Max Strain

Max Elongation

10 mm
25 mm
50 mm
75 mm
100 mm
150 mm
200 mm>1000%
860%
380%
220%
140%
60%
20%

230 mm
215 mm
190 mm
165 mm
140 mm
90 mm
40 mm

Gage Length

Max Strain

Max Elongation

10 mm
25 mm
50 mm
100 mm
200 mm
300 mm
400 mm≥1000%≥1000%
880%
390%
145%
63%
23%

480 mm
465 mm
440 mm
390 mm
290 mm
190 mm
90 mm» The MTS AOX will work with any gage length that is within the range for the lens options that are listed above.
» The maximum strain values are approximate and include a margin of 5-10 mm to provide for reasonable ease-of-use.
» A gage length of 4 times (or more) of the specimen width or diameter is recommended for most applications.
* Additional Working Distance and Field-of-View options are available.

33

MTS Advantage™ Video Extensometer

The MTS Advantage Video Extensometer delivers theflexibility, accuracy and repeatability needed in applications
where it is difficult to measure strain using conventional
means. This extensometer combines several features thatmake it an outstanding choice to measure strain, rotationand displacement of plastics, metals, composites andhigh-elongation materials.
» Magnetic-return support arm for easy specimen accessand precise positioning» Sixteen quick-attach measurement heads supportinga wide array of gage lengths and strain ranges» Pass/fail calibration verification blocks and software
calibration wizard to confirm setup to desired ASTM
E83 or ISO 9513 class» Mounting options on left, right, front or back ofload frame

Advantages of Video Extensometry

Upgrade to 2D Digital Image Correlation (DIC)» Measures samples through failure without the risk ofdamage to your extensometer» Create planar strain maps with real-time measurements» Perfect for fragile, brittle or irregularly shaped specimens» Output 2D contour plots where color gradients showlevels of strain» Allows up to 200 measurements in real-time» Define the x-axis and show Exx, Eyy or Exy» Allows repeatable measurements to be made after thephysical test is complete» Identify areas of high stress, crack option or otherdiscontinuities» Ideal option for measuring in high-temperatureor submerged» Toggle between all measurement options without
reprocessing a test

User-friendly Software Enables Quick Measurements» Drag and drop a full selection of measurement devices
onto your specimen» Select from 10 different measurement devices todetermine position, displacement, distance or rotation» Virtual strain measurement devices convert motion into
axial strain, dual average strain, Poisson’s ratio, shear
strain and 2D strain maps
» Understand results quickly with intuitive graphical displays» Ethernet communication between systems sends ±10 V
signals to the MTS TestSuite TW software
2D Strain Map

34

Measurement Head Specifications

Each AVX Measurement Head includes an inspected, traceable validation block, which
can be used to confirm calibration at the beginning of a series of tests. Validation
blocks are serialized and include an ISO 17025 Accreditation Calibration Report.

XT-100 Series Measurement Heads
They are also capable of meeting Class B-1(ASTM E-83) over most of their operating range(gage lengths where maximum axial tensile strainless than 600%). The XT-100 series operate atmeasurement rates from 0.1 - 500 Hz.

Ideal for determining higher strain (>10%) materials
properties such as yield point & elongation, and forlong gage lengths. All models are capable of meeting
Class B-2 (ASTM E-83) & Class 0.5 (ISO 9513) at the
specified gage lengths and strain ranges (>10%).

Maximum Axial Tensile
Maximum Axial Compressive
AVX
Maximum
Typical Extension
Minimum Specimen
Maximum
Strain Range (%) at
Strain Range (%) at Specified Transverse Gage
Measurement
Resolution
Width for Measurements Tracking Speed
1
1
2
3
4
Specified Gage Length (mm)Gage Length (mm)HeadLength (mm)
(µm)
(mm)
(mm /min) 2
50

100 200

10

25

50

100 200

Axial

Field of
View
(mm)

10

25

Transverse

XT-101

280

70

-

-

-

40

40

-

-

-

10

0.3

1.5

4

1350

57 x 16

XT-102530 170

50

-

-

40

40

40

-

-

19

0.4

2.4

7

2100

98 x 27

XT-103840 300

120

25

-

-

40

40

40

-

29

0.6

3.4

10

3200

150 x 42

XT-1041000 460

200

65

-

-

40

40

40

-

43

0.9

5

14

4600

220 x 62

XT-105-800

360 150

40

-

-

40

40

40

70

1.4

8

23

7200

350 x 100

XT-106-1000 500 220

70

-

-

40

40

40

65

1.8

11

30

9400

460 x 100

XT-107-800 360 150

-

-

-

40

40

-

2.8

16

-

14000

700 x 100-

1. Strain ranges assume a distance between the grips of twice the GL, with a centrally positioned gage. Actual strain
ranges may be greater or less than these values, depending on gage positioning, grip separation and specimen behavior.
2. Maximum transverse GL and tracking speed is quoted at a measurement rate of 100 Hz.
3. Resolution is based on typical lab performance.
4. For Class B-1, minimum specimen width for transverse gage lengths should be increased by 65%.
Note: Working distance is 480 mm.

XT-200 Series Measurement Heads
Ideal for determining low strain materials properties(from 0.01%), such as tensile & compressive
modulus, Poisson’s ratio & R-value. All models arecapable of meeting Class B-1 (ASTM E-83) & Class
0.5 (ISO 9513) at the specified gage lengths andstrain ranges.

The XT-200 series are our highest accuracy
measurement heads. These models operate
at measurement rates from 0.1 - 30 Hz.
The XT-250 series are suitable for many highaccuracy dynamic applications, and operate atmeasurement rates from 0.1 - 500 Hz.

Maximum Axial Tensile
AVX
Maximum Axial Compressive
Maximum
Typical Extension
Minimum Specimen
Maximum
Measurement Strain Range (%) at Specified
Strain Range (%) at Specified Transverse Gage
Resolution
Width for Measurements Tracking Speed
1
Gage Length (mm)HeadGage Length (mm) 1
Length (mm) 2(µm) 3(mm)(mm /min) 2

Field
of View
(mm)

10

25

50

10

25

50

Axial

Transverse

XT-204

300

80

10

40

40

25

45

0.18

1.0

4.6

250

61 x 51

XT-205

460

145

40

40

40

40

63

0.25

1.4

6.4

350

86 x 72

XT-254

390

120

25

40

40

40

15

0.3

1.7

8

1900

76 x 21

XT-255

580

190

65

40

40

40

21

0.4

2.4

11

2600

107 x 30

1. Specified strain ranges assume a distance between the grips of twice the GL, with a centrally positioned gage. Actual strain
ranges may be greater or less than these values, depending on gage positioning, grip separation and specimen behavior.
2. Maximum transverse GL and tracking speed is quoted at a measurement rate of 15Hz (XT-20x series) and 100 Hz (XT-25x series).
3. Resolution based on typical lab performance.
Note:. Working distance is 273 mm and is subject to +/- 5% tolerance.

35

Laser Extensometer

MTS offers the LX 500 Extensometer. This highperformance device is completely self-contained, easilytransportable, and easy to use with its digital display andfour-button keypad. It can be operated from the rear
control panel or remotely via the RS-232 interface. The
unique scanning laser beam technique, used to measureelongation entirely from one side of the specimen,
eliminates the need for a separate receiver mounted on
the opposite side of the specimen.
FEATURES» Selectable averaging of 2 to 512 scans» Measures the initial gage length of the specimen directly» Can measure strain simultaneously over three segments
within the specimen’s gage length» Meets ASTM B1 extensometer classification(25 mm/1 in and longer gage length)» Measurements are updated 100 times per second.
» Analog output port for closed loop strain control or for
input to a data acquisition board, chart recorder, andso forth» Parallel beam design accommodates operation throughchamber glass, a clear bath, water, and so forth» Certified for compliance with the Center for Devices
and Radiological Health as a Class II product

MOD E L

LX 500

MA X IMUM
T R AVELRESOLUTIONNON- LINEARIT Y
M AXIM UM

RE P E ATA BILIT Y

A NA LOG OUT P UT

8-127 mm(0.3-5.0 in)

0.001 mm(0.0001 in)±0.025 mm(±0.001 in)±0.003 mm(±0.0001 in)

16 bit selectable
range, ±10 V full scale

PA RT NUM BE RS*
115V±10%055-283-101

PA RT N U M B ER S *2 3 0 V ± 10 %055-283-102*Includes tripod, mounting plates, instruction manual, line cord, and tripod head.

AC C E S S O R IE S

36

M E ASURE M E NT

PA RT N U M B ER S

Retroreflective Tape

3.2 mm x 7.6 m (1/8 in x 25 ft)

100-039-188

Retroreflective Tape

6.4 mm x 7.6 m (1/4 in x 25 ft)

100-039-189

Retroreflective Tape, Submersible (water)

3.2 mm x 7.6 m (1/8 in x 25 ft)

100-214-873

Retroreflective Target, High Temp. (900°F), Non-adhesive

2.5 mm x 76.2 mm (0.1 in x 3 in)

100-039-190

Laser Cart, Vertical Adjustment

913 mm x 1556 mm (36 in x 61 in)

100-165-138

Other Applications

With over 101 different models, MTS has the largest offeringof extensometers in the world. In fact, here’s a list of someof our other models that you won’t find in this catalog.
Contact us if you’re interested in any of these capabilities!

Model 632.32
Biomedical
Extensometer

Model 632.06H-94
Metal Formability
Extensometer

Model 632.80 for
Ambient Axial Torsional
Measurement

Model 632.57
with Mounting
Bracket

BIOMEDICAL SOFT TISSUE OR SIMILAR MATERIAL(MODEL 632.32)

AXIAL ROCK MECHANICS APPLICATION(MODEL 632.90)

Ultra-low contact force with serrated knife edges.

Models available for use in air, or in high pressure, single
measurement, and averaged axial applications.

HIGH-TEMPERATURE AXIAL APPLICATIONS(MODELS 632.50/.51/.53/.54/.57)

Many options available. Air-cooled, water-cooled, vacuum,
and temperatures to 1600°C (2900°F).

CIRCUMFERENTIAL APPLICATION(MODEL 632.92)

Unique roller chain design provides low hysteresis.

HIGH-TEMPERATURE DIAMETRAL/TRANSVERSEAPPLICATIONS (MODELS 632.60/61)

Standard models to 1000°C (2200°F).
HIGH-TEMPERATURE AXIAL TORSIONAL APPLICATIONS(MODELS 632.68 AND 632.80)

Simultaneous measurement of axial and torsional strain.
The Model 632.80 has a temperature range of -100°C to
150°C (-150°F to 300°F), while the high-temperature version
Model 632.68 is rated up to 1200°C (2200°F).

Model 632.92H-05
Extenometer on
Marble Core Specimen

37

Clip-On Displacement Gages» Double cantilever displacement-type gages are primarily
used in fracture mechanics testing, KIC, JIC, crack growthand R-curve determination» Useful for measuring the displacements of components
and specimens with odd geometries, performing elongation
studies, and testing pipes, bars and rods
» Compatible with a variety of specimens including compact
tension, WOL, round compact tension, C-shaped, bend,
and other common specimens or panels

Model 632.65 is ideal formeasuring crack opening
displacement for hot
fracture mechanics testing.

» Can be immersed in a wide variety of non-conductive
fluids without special precautions» Model 632.02 Clip-On gages when testing to ASTM E399
» Model 632.03 Clip-On Gages are our most accuratefeaturing improved slot geometry and three-point contact
knife edges. Options are available with longer travel for
J-integral and crack growth tests» Replacement knife edges available upon request» Additional models available, contact your sales
representative for more options

Standard equipment
includes the gage andstorage case, two reusable
hardened knife edges for
attachment to the specimen,
and an instruction manual.
Pictured are 632.02 and 632.03/05
Clip-On Gage knife edges.

Metric Units
MO D E L/OP T

GAGE
LENGTHTRAVELM A X IM UM
F RE QUE NCY

COM P RE SSE D
FORCE

H E IGH T /LE NGT H

632.02F-2x

5 mm+3 / -1 mm

50 Hz

2500 g30.5 / 48.3 mm

12 mm

4 mm

100 Hz2500 g632.02F-20
632.03-2x632.03F-20

T E M P E RAT URE
M IN/M A X

PA RT N U M B ER

-100°C / 150°C

047-400-104-100°C / 150°C

047-400-204-100°C / 150°C

047-400-310-100°C / 150°C

047-400-311

632.03-3X
Option 001

2 mm

4 mm

Option 002

2.5 mm

4 mm

632.65E-03

15.24 mm

+10 / -1.0 mm

10 Hz

200 g

MO D E L/OP T

GAGE
LENGTHTRAVELM A X IM UM
FRE QUE NCY

COM P RE SSE D
FORCE

H E IGH T /LE NGT H

632.02E-2x / --0.2000 in+0.100 / -0.05 in

50 Hz

2500 g1.2 / 1.9 in

0.475 in

0.15 in

100 Hz2500 g1000°C max

US Customary Units

632.02E-20
632.03E-20

T E M P E RAT URE
M IN/M A X

PA RT N U M B ER

-150°F / 300°F

047-400-101-150°F / 300°F

047-400-201

632.03E-3X

38

Option 001

0.075 in

0.15 in-150°F / 300°F

047-400-301

Option 002

0.10 in

0.15 in-150°F / 300°F

047-400-302

632.65E-03.600 in+0.400 / -0.040 in

10 Hz

200 g

1800°F max

Displacement Gages» Versatile design measures specimens, fixtures, shafts,or the movement of any other component during a test
» Designed for use where small deformations must be
measured such as bend tests or tests with unusual
geometries» Over-travel protection included:– Gage arm releases if it travels too far or when a sideload is applied.
– Gage arm can be reset without changing the
body position» Comes with an adjustable mounting block» Displacement measurements can be made with the gagein contact against a specimen or an active component in
the force train

M O D E L/OP T

632.06H-2x / --TRAVELZERO
ADJUST

FORCE ATZ E ROH E IGH T

LE NGT H±4 mm (±0.16 in)

8 mm (0.30 in)

150 g

101 mm (4 in)

101 mm (4 in)

632.06H-20

PA RT
N U M B ER

-100°C / 150°C (-150°F / 300°F) 047-400-501

632.06H-23
632.06H-3x/ 001

T E M P E RAT URE RA NGE
M IN/M A X-100°C / 175°C (-150°F/ 350°F) 047-400-503±2 mm (±0.08 in)

8 mm (0.30 in)

150 g

101 mm (4 in)

101 mm (4 in)

632.06H-30-100°C / 150°C (-150°F / 300°F) 047-400-504

632.06H-33-100°C / 175°C (-150°F/ 350°F) 047-400-506

632.06H-3x/ 002±1 mm (±0.04 in)

8 mm (0.30 in)

250 g

101 mm (4 in)

69 mm (2.7 in)±6 mm (±0.25 in)

8 mm (0.30 in)

150 g

101 mm (4 in)

101 mm (4 in)

632.06H-30
632.06H-3x/ 003-100°C / 150°C (-150°F / 300°F) 047-400-507

632.06H-30-100°C / 150°C (-150°F / 300°F) 047-400-510

632.06H-33
632.06H-3x/ 004-100°C / 175°C (-150°F/ 350°F) 047-400-512±8 mm (±0.32 in)

8 mm (0.30 in)

100 g

101 mm (4 in) 140 mm (5.5 in)

632.06H-3x/ 005 ±12.5 mm (±0.50 in) 8 mm (0.30 in)

80 g

101 mm (4 in)

632.06H-30-100°C / 150°C (-150°F / 300°F) 047-400-513
190 mm (7.5 in)

632.06H-30-100°C / 150°C (-150°F / 300°F) 047-400-516

632.06H-31-270°C / 65°C (-452°F / 150°F) 047-400-517

632.06H-33-100°C / 175°C (-150°F/ 350°F) 047-400-518

632.06H-3x/ 006±25 mm (±0.50 in)

8 mm (0.30 in)

35 g

101 mm (4 in) 343 mm (13.5 in)

632.06H-30-100°C / 150°C (-150°F / 300°F) 047-400-519

632.06H-31-270°C / 65°C (-452°F / 150°F) 047-400-520

39

40

Extensometer Calibrator

Model 650.03
Model 650.03
Extensometer
Calibrator withaxial setup

The micrometer head is large for easy
readability, accurate adjustment, andimproved repeatability of gage
calibration.

The MTS Model 650.03 Extensometer
Calibrator is a precise instrument
designed and built for rugged,longlasting durability. It gives you freedom
from wear; vital for the high accuracy
required for precise calibrator verificationof high resolution instruments.

1. Standard Axial includes Extensometer models
632.11/12/13/24/25/26/27/31, 634.11/12/25/31
set-up with straight knife edges and attachment
for round specimens. Some specific knife edges

The micrometer head has a spindle witha large diameter lead screw to reducewear and resulting backlash and toprovide higher strength and stiffness.
Larger mounting diameters reduce
the unit stress required in mounting
the micrometer head to the frame.

or attachment kits may require other sizes of
specimen adapters. The installation drawing for theextensometer will identify the specimen size range.
2. Standard High Temperature Axial includes
632.53/54 with standard length rods, 632.50/51
with length options 075, 076, 077,078, 079 and080. Calibration require rods with either conicalpoint (with Dimpled Specimen) or V-chisel rod
end geometry (with optional 9.5 mm round).

			

650.03 Calibrator frame in fitted case031-508-302

Micrometer head, U.S. customary (0.00005 in graduation)

031-508-205					Required for all, choose one

Micrometer head, Metric (0.001 mm graduation)

031-508-206					Required for all, choose one

632.92, 632.11 OR .12 W/ 632.21 KIT

STAN DARD H I TE M P AX IAL (2)632.85 TRAN SV E RS E

632.17/.85 AX IAL

632.29632.18/.19/.20

632.06 OP TION 0 06

632.06

E X TE N D E D G L AX IALSTAN DARD AX IAL (1)632.03/.05

DESCRIPTION PART NUMBER

632.02E X TE N S OM ETE R M OD E L

Fixtures for
COD gages

Required for all				Calibrator Kits
Calibrator Kit, Basic Specimen Adapters

100-049-249		

Calibrator Kit, Model 632.03/.05 Knife Edges

100-049-250			 •`

•• opt					Calibrator Kit, Model 632.02 Knife Edges

100-049-251

Calibrator Kit, Standard, 12.7 mm (0.50 in), Round Spec.

100-049-270				Calibrator Kit, Frame Invert

100-049-252• •			 •

•
• •

				

• •

•					•

Calibrator Kit, Extended, 12.7 mm (0.50 in), Round Spec.

100-049-253					Calibrator Kit, Dimpled, 9.5 mm (0.375 in) Round Spec.

100-054-156												

•Calibrator Kit, 9.5 mm (0.375 in) Round Specimen

100-049-255				 opt							 opt

Calibrator Kit, 3.2 mm (0.125 in) Round Specimen

100-049-256				 opt					•

•Calibrator Kit, Mounting Bracket for Model 632.53/.54

100-054-133										Calibrator Kit, Model 632.18/.19/.20 Diameteral Extensometers100-049-258								 •Calibrator Kit, Displacement Gages

100-049-259						•

•Calibrator Kit, Model 632.06 Option 006 Adapter

100-054-796							

•Calibrator Kit, Model 632.17/.85 Axial

100-049-260										•Calibrator Kit, Model 632.85 Transverse

100-049-261											•Calibrator Kit, Model 632.92/.21 Circumferential

100-049-262										Find the model of the extensometer, then follow the column down to determine the kit(s) required to calibrate the extensometer.

•

		

41

MTS Direct Current Potential Drop (DCPD) Solution

Integrated Software & Hardware Package Allowing Accurateand Efficient Measurement of Fatigue Crack Growth
Direct Current Potential Drop (DCPD) measures the change
in resistance of a specimen, which correlates directly withcrack growth. It is an effective way to collect fatigue crack
growth data in high-temperature tests and other challenging
environments. DCPD is used to overcome the challenges
that make contact extensometry and compliance calculations
impractical for crack length measurement. Unfortunately, to
get the best results, some DCPD solutions require excessive
set-up time while others limit flexibility.
The MTS DCPD Solution features integrated softwareand hardware for test control, data analysis, and results
reporting. It greatly simplifies DCPD test configuration
using the powerful automation tools built into MTS
TestSuite software. Integrated into MTS FlexTest 40
Controllers and MTS TestSuite Software, the MTS DCPD
solution eliminates the challenges that can arise with
non-integrated components from multiple suppliers.
This provides a convenient and comprehensive way toincorporate DCPD into your material testing programs.
This solution uses the reversing DCPD method. By
monitoring load and potential (voltage) data from a loaded
specimen and a reference specimen, it determines crack
length by calculating ratios of potential on both. Applying acalibration equation to the ratios produces the crack length.
The current is switched on and off (reversed) to correct forthermocouple effects.

Comprehensive DCPD Solution
This solution offers a comprehensive approach for adding
DCPD to your materials testing program. It includes thesoftware and hardware required for integrated DCPD testdevelopment and execution. The MTS DCPD Testing
Solution includes:» Setup specimen kit for verifying hardware setup and test
configuration» Setup, installation and equipment verification by MTS» Additional training, consulting and template modifications
are available.
KEY FEATURES» Compatible with MTS Series 318 and MTS Landmark®
test systems for electrical isolation» Integrates with MTS FlexTest Controller (Model 40) and
MTS TestSuite Software» Designed for low noise» Modular Preamplifier maintains signal integrity» Compliant to CE, CSA and NRTL
» Available with advanced consultation, template changes
and training.

OverallCurrent:

Adjustable 0 - 20 Amps DC Maximum» High-fidelity MTS DCPD Measurement System(2- or 7-channel configuration)

Voltage:

5 Volts DC Maximum

Gain:

x 5,000 or x 50,000» Modular Preamplifier(s)Gain Accuracy:

0.5% Typical, 2% Maximum» MTS TestSuite DCPD Module supports 2-channel DCPD
system (includes all test templates, report templates andcalculations for ASTM-compliant fatigue crack growthassessments). Support for DCPD systems greater than
2 channels is available upon request

Filter:

50 Hz and 300 Hz

Bandwidth:

300 Hz Maximum

Output:±10 Volts DC» Includes MTS TestSuite Multipurpose Analyzer for
automated or manual analysis

Gain:» Required software (not included): MPE or MPX andMicrosoft Excel 2016 or newer to view reports

42» Recommended software: MTS Reporter to create or edit
reports post-test and to create or edit report templates

Main Chassis
1x or 10xPreampGain:

5,000xNOTES

43

Regional Business Centers

T HE AM E R IC AS

EU R O PE

A S I A / PA C I FI CMTS Systems Corporation
14000 Technology Drive
Eden Prairie, MN 55344-2290
USA
Telephone: 952-937-4000
Toll Free: 800-328-2255
E-mail: info@mts.com
Internet: www.mts.com

MTS Systems France
BAT EXA 16
16/18 rue Eugène Dupuis
94046 Créteil Cedex
FranceTelephone: +33-(0)1-58 43 90 00
E-mail: contact.france@mts.com

MTS Japan Ltd.
Raiden Bldg. 3F 3-22-6,
Ryogoku, Sumida-ku,
Tokyo 130- 0026
Japan
Telephone: +81 3 5638 0850
E-mail: mtsj-info@mts.com

MTS Systems (Germany) GmbH
Hohentwielsteig 314163 Berlin
Germany
Telephone: +49-(0)30 81002-0
E-mail: euroinfo@mts.com

MTS Korea, Inc.
2nd F, Bundang Yemiji Building, 31,
Hwangsaeul-ro 258beon-gil,
Bundang-gu, Seongnam-si,
Gyeonggi-do, 13595
Korea
Telephone: +82-31-728-1600
E-mail: mtsk-info@mts.com

MTS Systems S.R.L. a socio unico
Strada Pianezza 289
10151 Torino
Italy
Telephone: +39-(0)11 45175 11 sel. pass.
E-mail: mtstorino@mts.com
MTS Systems Norden AB
Datavägen 37b
SE-436 32 Askim
SwedenTelephone: +46-(0)31-68 69 99
E-mail: norden@mts.com
MTS Systems Limited
98 Church Street,
Hunslet,
Leeds
LS102AZ
United Kingdom
Telephone: +44 (0) 113 270 8011
E-mail: mtsuksales@mts.com

MTS Systems Corporation

MTS Systems (China) Co., Ltd.
Floor 34, Building B,
New Caohejing International
Business Center,
No.391, Guiping Road,
Xuhui District
Shanghai 200233
P.R.China
Telephone: +021-24151000
Market: +021-24151111
Sales: +021-24151188
Service: +021-24151198
E-mail: MTSC-Info@mts.com
MTS Testing Solutions India Pvt Ltd.
No. 38, Ground Floor, Donata Radiance,
1st Cross, Tavarekere Main Road,DRC Post, Krishna Nagar Industrial Layout,
Kormangala, Bangalore – 560 029
India
Telephone: + 91 80 46254100
Email: mts.india@mts.com

14000 Technology Drive
Eden Prairie, MN 55344-2290 USA

MTS and MTS Acumen are registered trademarks of MTS Systems
Corporation within the United States. These trademarks may beprotected in other countries. RTM No. 211177.

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http://www.mts.com© 2024 MTS Systems Corporation
100-396-864k Extensometer • Printed in U.S.A. • 09/24