Sylomer SR 42 SR42
Data Sheet®

MaterialColour

mixed-cell PU elastomer(polyurethane)pinkStandard Sylomer® range
Static range of use
SR
1200

Standard delivery dimension
Thickness: 12.5 mm / 25 mm
Roll:
1.5 m wide, 5.0 m long
Strip:
up to 1.5 m wide, up to 5.0 m long

SR850
SR450
SR
220

Other dimensions, punched and molded parts on request.

SR110

Range of use

Compressive load

DeformationSR
55

shape factor-dependent, values apply
to shape factor q = 3

Static range of use(static loads)

Dynamic range of use(static plus dynamic loads)

0.042 N/mm2

up to 0.042 N/mm2approx. 7 %up to 0.057 N/mm2

approx. 20 %SR18

up to 2.0 N/mm2approx. 75 %SR
11Load peaks(occasional, brief loads)

SR
28

10

Material properties
Mechanical loss factor

0.18

Rebound resilience
Compression hardness 3Compression set

2

Static modulus of elasticity

DIN 53513 1

temperature-, frequency-, specific load- and amplitude-dependent

EN ISO 8307
EN ISO 844 1
EN ISO 1856

1at 10 % linear compression, 3rd load cycle
150 % deformation, 23 °C, 72 h, 30 min after removal of loadat specific load of 0.042 N/mm2

20.60 N/mm2

at specific load of 0.042 N/mm2, 10 Hz

DIN 53513 1

Static shear modulus

0.09 N/mm

DIN ISO 1827

Dynamic shear modulus

0.17 N/mm2

DIN ISO 1827 1

Min. tensile stress at rupture

0.50 N/mm2

EN ISO 527-3/5/500 1

190 %EN ISO 527-3/5/500 1

Abrasion 2
Coefficient of friction (steel)
Coefficient of friction (concrete)≤ 1200 mm30.51

at a pretension of 0.042 N/mm2
at a pretension of 0.042 N/mm2, 10 Hz

DIN ISO 4649 1

load 7.5 N

Getzner Werkstoffedry, static friction

0.7Getzner Werkstoffedry, static friction> 1010 Ω·cm

DIN EN 62631-3-1 1

dry

Thermal conductivity

0.055 W/(mK)DIN EN 12667

Temperature range-30 °C to 70 °C

Specific volume resistance

Flammability
Measurement / evaluation in accordancewith the relevant standard
The measurement is performed on adensity-dependent basis with differing
test parameters
3
Values apply to shape factor q = 3

class E

0.01
0.001
Specific load in N/mm2

Comment55 %0.22 N/mm

0.1Test methods

2Min. tensile elongation at rupture2

10.05 N/mm2<5%3

Dynamic modulus of elasticity 31SR42

short term higher temperatures possible
EN ISO 11925-2

normal combustible, EN 13501-1

All information and data is based on our current knowledge. The data can be applied for calculations and as
guidelines, are subject to typical manufacturing tolerances and are not guaranteed. Material properties as wellas their tolerances can vary depending on type of application or use and are available from Getzner on request.
Further information can be found in VDI Guideline 2062
(Association of German Engineers) as well as in glossary.
Further characteristic values on request.

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1

Sylomer SR 42 SR42®

Specific load in N/mm2

Load deflection curve
0.08

Quasi-static load deflection curvemeasured with a loading rate of0.0042 N/mm2/s.

12.5 mm
0.07

25 mm
37.5 mm

0.06

50 mm
0.05

Static range of use

0.04

0.03

0.02

0.01

Dynamic range of use

0.042 N/mm2Testing between flat and plane-parallel steel plates, recording of 3rd load,with filtered starting range in accordance with ISO 844, testing at room
temperature.
Shape factor q = 30012345678910
Deflection in mmFig. 1: Quasi-static load deflection curve for different bearing thicknesses

Modulus of elasticity
Dynamic range of use
Modulus of elasticity in N/mm2

Static range of use
1.750

Quasi-static modulus of elasticity as
tangential modulus from the load
deflection curve. Dynamic modulusof elasticity from sinusoidal excitation with a velocity level of 100 dBv
re. 5 · 10-8 m/s corresponding to avibration amplitude of 0.22 mm at
10 Hz and 0.08 mm at 30 Hz.

0.042 N/mm21.500
30 Hz
1.250
10 Hz
1.000

Quasi-static

0.750

Measurement in accordance withDIN 53513

0.500

Shape factor q = 30.250

000.01

0.02

0.03

0.04

0.05

0.06

Fig. 2: Load dependency of the static and dynamic modulus of elasticity

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20.07
0.08
Specific load in N/mm2

Specific load in N/mm2

Natural frequencies
0.08

Natural frequencies of a vibratory
system with a single degree of freedome, consisting of a mass and anelastic bearing made ofSylomer® SR 42 on a rigid surface.

0.07

0.06

0.05

12.5 mm
Static range of use

25 mm

0.03

37.5 mm
0.02

50 mm

0.01

Dynamic range of use

0.042 N/mm20.04

Parameter: thickness ofthe Sylomer® bearing
Shape factor q = 30510152025
Natural frequency of the system in Hz

Fig. 3: Natural frequencies for different bearing thicknesses

Disturbing frequency in Hz

Vibration isolation efficiency
100Reduction of the transmitted mechanical vibrations by implementation of an elastic bearing consistingof Sylomer® SR 42 based on a stiffsubgrade.

90-40 dB/99 %80-35 dB/98 %-30 dB/97 %-25 dB/94 %70-20 dB/90 %60-15 dB/82 %Parameter: factor of transmission
in dB, isolation rate in %50-10 dB/69 %40-5 dB/44 %300 dB/0 %20100510152025Natural frequency of the system in Hz

Fig. 4: Factor of transmission and isolation rate

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3

Change in deflection in %

0.044
0.043
0.042
0.041
0.040

30 %
25 %
20 %
15 %
10 %

0.039

5%

0.038

0%

0.037

-5 %

0.036

-10 %
0.3

130.3

6
Shape factor

Change in natural frequencies in %Change in dynamic modulus of elasticity in %

0%

-10 %

-20 %

-30 %

10 %

5%

0%

-5 %

-10 %

-20 %
0.3

13

6
Shape factor

Fig. 7: Dynamic modulus of elasticity 4 at 10 Hz inrelation to the shape factor

0.3

13

6
Shape factor

Fig. 8: Natural frequency 4 in relation to the shape factor

Reference values: specific load 0.042 N/mm2, shape factor q = 3

Material properties can be determined using the online calculation program FreqCalc.
The program can be accessed via www.getzner.com (registration necessary).

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46Shape factor-15 %-40 %43Fig. 6: Deflection 4 in the relation to the shape factor

Fig. 5: Static range of use in relation to the shape factor

10 %

1

DB SR 42 en © Copyright by Getzner Werkstoffe GmbH l 06-2019
We reserve the right to amend the data.

Specific load in N/mm2Influence of the shape factor
The graphs show the material properties at different shape factors.