Sylomer® FR 328
Data SheetFR328

mixed-cell flame retardant
PU elastomer (polyurethane)mottled blue

MaterialColour

Standard delivery dimension
Thickness: 25 mm / 50 mm
Mat:
0.5 m wide, 1.5 m long
Strip:
max. 1.5 m long
Other dimensions and self-adhesive equipment on request.

Material properties

Test methods

Static range of use 2(static loads)

up to 0.028 N/mm2

Dynamic range of use 2(static and dynamic loads)

up to 0.038 N/mm2

Load peaks 2(occasional, brief loads)

up to 1.0 N/mm2

Mechanical loss factor= 0.33

DIN 53513 1

Compression set<5%EN ISO 1856

Min. tensile stress at rupture
Min. tensile elongation at rupture

2temperature-, frequency-, specific load- and amplitude-dependent
1EN ISO 527-3/5/100

160 %EN ISO 527-3/5/100-30 up to 70 °C

Flammability

S4/SR2/ST2
HL3
E

1

approx. 75 % deformation

0.3 N/mm2

Temperature range

Comment

50 % deformation, 70 °C, 22 h, 30 min after removal of load

short term higher temperatures possible
DIN 54837

evaluation with DIN 5510-2

DIN EN 45545-2
DIN EN ISO 11925-2

requirements for R10classification compliant with DIN EN 13501-1

Measurement/evaluation in accordance with the relevant standard
Values apply to shape factor q = 30,05

Quasi-static load deflection curvemeasured with a loading rate of
0.0028 N/mm2/s.

12,5 mm
0,04
25 mm

50 mm

0,030,028 N/mm2
0,020,01

Static range of use
Dynamic range of use

Specific load in N/mm2

Load deflection curve

Testing between flat steel-plates;
recording of the 3rd load, testing withfiltered starting range in accordancewith ISO 844 at room temperature.
Shape factor q = 30012345678910Deflection in mmFig. 1: Quasi-static load deflection curve for different bearing thicknesses

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 well as
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 inglossary. Further characteristic values on request.

Modulus of elasticity
Dynamic range of use
Static range of use

Modulus of elasticity in N/mm21.6

Quasi-static modulus of elasticity as tangential
modulus from the load deflection curve. Dynamic modulus of elasticity from sinusoidal excitation with a velocity level of 100 dBv re. 5 · 10-8 m/s
corresponding to a vibration amplitude of0.22 mm at 10 Hz and 0.08 mm at 30 Hz.

0.028 N/mm21.4
1.230 Hz1.010 Hz0.80.6
0.4

Measurement in accordance with DIN 53513

Quasi-static0.2

Shape factor q = 3000.01

0.02

0.03

0.04

0.05

0.06

Specific load in N/mm2
Fig. 2: Load dependency of the static and dynamic modulus
of elasticity

0.06

Natural frequencies of a vibratory system with asingle degree of freedome, consisting of a mass
and an elastic bearing made of Sylomer® FR 328
on a rigid surface.

12,5 mm
0.05
25 mm

0,028 N/mm2

0.03
0.02
0.01
0810121416

Dynamic range of use

50 mm0.04

Static range of use

Specific load in N/mm2

Natural frequenciesParameter: thickness of the Sylomer® bearing
Shape factor q = 3

1820 222426 28 30
Natural frequency of the system in Hz

Relative deflection in % of thickness
with unstressed assay

Static creep behaviour
25

Deformation under consistent loading.
full load

20

Parameter: permanent static load
15

Shape factor q = 3
half load

1051 month

1 year10 years

00 1 2 3 4 5 6 7 10100

1,000

10,000Period of loading in days
Fig. 4: Increase in deformation under consistent loading

DB SR FR 328 en © Copyright by Getzner Werkstoffe GmbH l 07-2023
We reserve the right to amend the data.

Fig. 3: Natural frequencies for different bearing thicknesses