Overview of materials for Silicone Rubber

Categories: Polymer; Thermoset; Silicone; Silicone Rubber

Material This property data is a summary of similar materials in the MatWeb database for the category "Silicone Rubber". Each property range of values reported is
Notes: minimum and maximum values of appropriate MatWeb entries. The comments report the average value, and number of data points used to calculate the average.
The values are not necessarily typical of any specific grade, especially less common values and those that can be most affected by additives or processing
methods.

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Physical Properties Metric English Comments
Density 1.00 - 3.70 g/cc 0.0361 - 0.134 lb/in³ Average value: 1.40 g/cc Grade Count:103
Water Absorption 0.400 - 2.80 % 0.400 - 2.80 % Average value: 1.20 % Grade Count:3
Viscosity 200 - 50000 cP 200 - 50000 cP Average value: 21900 cP Grade Count:13
Thickness 19.0 - 1570 microns 0.750 - 62.0 mil Average value: 309 microns Grade Count:61
Linear Mold Shrinkage 0.00100 - 0.0250 cm/cm 0.00100 - 0.0250 in/in Average value: 0.0120 cm/cm Grade Count:10
Outgassing - Total Mass Loss 0.340 - 1.07 % 0.340 - 1.07 % Average value: 0.705 % Grade Count:3
Storage Temperature 0.000 - 40.0 °C 32.0 - 104 °F Average value: 20.0 °C Grade Count:5
 
Mechanical Properties Metric English Comments
Hardness, Shore A 18.0 - 87.0 18.0 - 87.0 Average value: 55.4 Grade Count:108
Hardness, Shore D 67.0 67.0 Average value: 67.0 Grade Count:3
Tensile Strength, Ultimate 0.414 - 41.4 MPa 60.0 - 6000 psi Average value: 7.30 MPa Grade Count:86
6.20528 - 8.96318 MPa 900.002 - 1300.00 psi Average value: 7.58 MPa Grade Count:1
  @Temperature 100 - 150 °C @Temperature 212 - 302 °F
Tensile Strength, Yield 5.20 - 8.00 MPa 754 - 1160 psi Average value: 7.28 MPa Grade Count:20
Elongation at Break 28.0 - 950 % 28.0 - 950 % Average value: 368 % Grade Count:86
Elongation at Yield 0.000 - 350 % 0.000 - 350 % Average value: 237 % Grade Count:24
Modulus of Elasticity 0.000517 - 0.0621 GPa 0.0750 - 9.00 ksi Average value: 0.0103 GPa Grade Count:18
Poissons Ratio 0.500 0.500 Average value: 0.500 Grade Count:12
Shear Modulus 0.00100 - 0.448 GPa 0.145 - 65.0 ksi Average value: 0.207 GPa Grade Count:8
Shear Strength 0.965 - 3.65 MPa 140 - 530 psi Average value: 2.27 MPa Grade Count:9
Adhesive Bond Strength 0.0103 - 0.103 MPa 1.50 - 15.0 psi Average value: 0.0462 MPa Grade Count:44
Tear Strength 8.77 - 51.9 kN/m 50.0 - 296 pli Average value: 24.1 kN/m Grade Count:73
Compression Set 3.40 - 77.3 % 3.40 - 77.3 % Average value: 33.7 % Grade Count:7
40.0 - 45.0 % 40.0 - 45.0 % Average value: 43.9 % Grade Count:19
  @Temperature 70.0 - 70.0 °C @Temperature 158 - 158 °F
40.0 - 45.0 % 40.0 - 45.0 % Average value: 43.9 % Grade Count:19
  @Time 22.0 - 22.0 hour @Time 22.0 - 22.0 hour
 
Electrical Properties Metric English Comments
Electrical Resistivity 0.000103 - 1.70e+15 ohm-cm 0.000103 - 1.70e+15 ohm-cm Average value: 4.25e+14 ohm-cm Grade Count:4
Dielectric Constant 2.69 - 6.91 2.69 - 6.91 Average value: 4.54 Grade Count:7
Dielectric Strength 14.4 - 78.7 kV/mm 365 - 2000 kV/in Average value: 26.2 kV/mm Grade Count:62
Dissipation Factor 0.000600 - 0.00500 0.000600 - 0.00500 Average value: 0.00340 Grade Count:7
 
Thermal Properties Metric English Comments
CTE, linear 13.9 - 335 µm/m-°C 7.72 - 186 µin/in-°F Average value: 154 µm/m-°C Grade Count:14
Specific Heat Capacity 0.400 - 1.26 J/g-°C 0.0956 - 0.301 BTU/lb-°F Average value: 0.692 J/g-°C Grade Count:5
0.820 - 0.920 J/g-°C 0.196 - 0.220 BTU/lb-°F Average value: 0.852 J/g-°C Grade Count:5
  @Temperature 100 - 100 °C @Temperature 212 - 212 °F
Thermal Conductivity 0.180 - 3.00 W/m-K 1.25 - 20.8 BTU-in/hr-ft²-°F Average value: 1.26 W/m-K Grade Count:17
0.984 - 3.3867 W/m-K 6.83 - 23.504 BTU-in/hr-ft²-°F Average value: 2.14 W/m-K Grade Count:6
  @Temperature 100 - 100 °C @Temperature 212 - 212 °F
Maximum Service Temperature, Air 93.3 - 300 °C 200 - 572 °F Average value: 207 °C Grade Count:98
Minimum Service Temperature, Air -100 - -50.0 °C -148 - -58.0 °F Average value: -61.8°C Grade Count:87
Glass Temperature -119 - -116 °C -182 - -177 °F Average value: -117 °C Grade Count:11
UL RTI, Electrical 200 - 220 °C 392 - 428 °F Average value: 201 °C Grade Count:15
UL RTI, Mechanical without Impact 200 - 220 °C 392 - 428 °F Average value: 201 °C Grade Count:15
Flammability, UL94 HB - V -0 HB - V -0 Grade Count:12
Shrinkage 0.100 - 3.20 % 0.100 - 3.20 % Average value: 2.62 % Grade Count:7
 
Processing Properties Metric English Comments
Processing Temperature 150 - 165 °C 302 - 329 °F Average value: 153 °C Grade Count:6
Cure Time 15.0 - 15.0 min 0.250 - 0.250 hour Average value: 41.9 min Grade Count:44
@Temperature 121 - 177 °C @Temperature 250 - 350 °F
15.0 - 15.0 min 0.250 - 0.250 hour Average value: 41.9 min Grade Count:44
  @Pressure 0.103 - 0.345 MPa @Pressure 15.0 - 50.0 psi
15.0 - 180 min 0.250 - 3.00 hour Average value: 41.9 min Grade Count:37
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@Temperature 121 - 218 °C @Temperature 250 - 425 °F Page 1 / 2
  960 - 1440 min 16.0 - 24.0 hour Average value: 1390 min Grade Count:10
Pot Life 10.0 - 240 min 10.0 - 240 min Average value: 56.8 min Grade Count:11
Shelf Life 6.00 - 6.00 Month 6.00 - 6.00 Month Average value: 6.00 Month Grade Count:13
@Temperature 7.00 - 7.22 °C @Temperature 44.6 - 45.0 °F
Processing Temperature 150 - 165 °C 302 - 329 °F Average value: 153 °C Grade Count:6
Cure Time 15.0 - 15.0 min 0.250 - 0.250 hour Average value: 41.9 min Grade Count:44
@Temperature 121 - 177 °C @Temperature 250 - 350 °F
15.0 - 15.0 min 0.250 - 0.250 hour Average value: 41.9 min Grade Count:44
  @Pressure 0.103 - 0.345 MPa @Pressure 15.0 - 50.0 psi
15.0 - 180 min 0.250 - 3.00 hour Average value: 41.9 min Grade Count:37
  @Temperature 121 - 218 °C @Temperature 250 - 425 °F
  960 - 1440 min 16.0 - 24.0 hour Average value: 1390 min Grade Count:10
Pot Life 10.0 - 240 min 10.0 - 240 min Average value: 56.8 min Grade Count:11
Shelf Life 6.00 - 6.00 Month 6.00 - 6.00 Month Average value: 6.00 Month Grade Count:13
@Temperature 7.00 - 7.22 °C @Temperature 44.6 - 45.0 °F
  6.00 - 60.0 Month 6.00 - 60.0 Month Average value: 12.2 Month Grade Count:52

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entered into MatWeb.

O5240 / 78478

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