12-2020

IPCO 1600SM: Martensitic stainless steel belt

1/2

IPCO 1600SM

Martensitic stainlesssteel belt

Belt grade characteristics

Forms of supply

The IPCO 1600SM belt grade is made of low carbon,
martensitic, precipitation hardened, stainless steel ischaracterized by:• Excellent static strength• Excellent fatigue strength• Good corrosion resistance• Very good wear resistance• Very good repairability

The belts are, as standard, delivered in a heat-treatedcondition with a mill finish and have well-rounded edges.
Maximum width is limited to 600 mm.

IPCO 1600SM is a high strength steel with excellent
mechanical properties. This, in combination with good
corrosion resistance, makes it the ideal choice forapplications in very harsh conditions. Another advantage
is that it is easy to repair.

For tracking, the belts can be provided with V-ropes, either
rubber or in the form of a specially designed steel spiral.
If required, the product side of the belt can be fitted withretaining strips to keep the conveyed material on the belt
or with transverse flights to prevent material from sliding
backwards when the belt is steeply inclined.

The belts are leveled and straightened to obtain optimal
flatness and straightness. The belts can be supplied in open
lengths, with the ends prepared for welding on site, or inendless condition with a welded joint.

Chemical composition (typical), %CSiMnCrNi

Mo

0.01

0.3

0.2

9.5

9.5

4.8

Different tolerance grades are available to ensure that thebest belt can be selected from an economic point of view.
Recommendation and advice are available from your local
IPCO Office.

StandardsEN1.6908

Mechanical properties
Static strengthStandard strength at 20 °C (68 °F), typical values
PositionYield strength
MPaksiMPa

Parent material

1 570

228

1 600

Elongation

Weld factorksi

A5 (%)

Rm /Rm232

8Tensile strengthHardness
HV5480Transverse weld (not heat treated)

  950

138

1 080

157

40.68

*

Transverse weld (heat treated)

1 560

227

1 580

229

30.99

*

*See figure on page 2.

Standard strength at elevated temperature
Temperature

Yieldstrength

Tensilestrength

Elongation
A11 3 (%)°C°F

MPaksiMPaksi

100212

1 430

208

1 450

210

4200392

1 340

195

1 360

197

5300572

1 280

186

1 310

190

5400752

1 170

170

1 190

173

6.5

An increase in mechanical strength (hardness) andbrittleness can be noticed after long term use between
350–450 °C (660–840 °F). Hence the following
recommendation: If an operation temperature of or above

ipco.com

350 °C (660 °F) is considered, your local IPCO office should becontacted for technical assistance.
Impact properties
This belt grade is not recommended for use at low
temperature, i.e. such as in freezing operations.
Dynamic Strength
The fatigue limit is defined as the reverse bending stressat which 50% of the test specimen withstand a minimum of
2 × 106 load cycles.
These values refer to 20 °C (68 °F), a normal dry atmosphereand standard prepared specimen. The fatigue limit for theparent material is approximately ± 640 MPa (93 ksi).

IPCO 1600SM: Martensitic stainless steel belt

2/2

Physical properties

IPCO 1600SM is not suitable to use in any concentrationof hydrochloric acid, or in phosphoric and nitric acids of highconcentration and high temperature, and sulphuric acid ofmoderate and high concentration at elevated temperatures.

Density, ρ, at 20 °C (68 °F)
7 800 kg/m3, 0.282 lb/in3
Modulus of elasticity, E, at 20 °C (68 °F)
200 000 MPa (29 000 ksi)
Thermal conductivity, λTemp°C

20

100

200

300

400°F

68212

392

572

752

W/mK

1516181920

Btu/ft h °F

8.7

9.2

10.4

1111.6

Specific heat capacity, Cp
Temp°C

20100

200

300

400°F

68212

392

572

752

kJ/kgK

0.50

0.50

Btu/lb °F

0.12

0.12°C

20 – 100

20 – 200

20 – 300

20 – 400°F

68 – 212

68 – 392

68 – 572

68 – 752

10-6/ °C

10.9

11.5

11.7

11.9

10 / °F

6.1

6.4

6.5

6.6

-6

Stress corrosion cracking
Stress corrosion cracking, although occurring relatively
infrequently, can be a cause of failure in stainless steels.
It occurs at temperature above about 70 °C (160 °F), if thesteel is subjected to tensile stresses and comes into contact
with certain solutions, particularly those containing chlorides.
Hydrogen embrittlement
Hydrogen embrittlement is a potential danger to all highstrength martensitic steels whenever the reduction ofhydrogen ions to atomic hydrogen occurs. If this is the case,contact your local IPCO office.

Welding

Thermal expansion, αTemp

Pitting and crevice corrosion
The steel may be sensitive to pitting, even in solutions of a
relative low chloride content. When in continuous operation
at room temperature, IPCO 1600SM has good resistance topitting providing that the belt is kept clean.

Resistivity, ρ at 20 °C (68 °F)
0.8 μΩm
Magnetic properties
Remanence, BrJoints with very good strength and toughness can be formed
in IPCO 1600SM. A suitable fusion welding method is gasshielded arc welding, with the TIG method as fi rst choice.
Welding wire of type IPCO 1650SM should be used. Further
information concerning method and equipment etc. required
can be obtained from your local IPCO office.
Hardness HV
600

500

Coercive force, Hc
Max relative permeability, μr

400

The thermal conductivity of precipitation hardened steel iscomparable to austenitic stainless steels, but the thermal
expansion is much lower. This makes the precipitationhardened steel less sensitive to thermal strain and bucklingcaused by uneven temperature.

300Corrosion resistance

200-10-50mm from weld centre

510Figure 1. Example of hardness profile across a transverse weld, with andwithout heat-treatment in a IPCO 1600SM belt.

General corrosion
IPCO 1600SM shows a good corrosion resistance in rural andmild industrial atmosphere and almost equal good when
expose to coastal atmosphere. It has good resistance to:• Organic acids, such as acetic acid, up to highconcentrations and high temperatures and formic acid at
low concentrations and high temperatures.
• Inorganic acids, e.g. sulphuric acid at low concentrationand phosphoric and nitric acids at moderateconcentration and temperatures.
• Ammonium hydroxide up to boiling point and sodiumhydroxide at moderate concentrations and temperatures.
Data given in this document are nominal values and are not guaranteed. Information relating to material, specifications, properties and/or performance isintended as guidance on determining suitability, and may be subject to change without notice.

ipco.com