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PS vs. SBR Rubber

PS belongs to the thermoplastics classification, while SBR rubber belongs to the thermoset elastomers (rubber). There are 11 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is PS and the bottom bar is SBR rubber.

Metric UnitsUS Customary Units

Mechanical Properties

Elongation at Break, % 1.8 to 40
530
Tensile Strength: Ultimate (UTS), MPa 32 to 44
14

Thermal Properties

Glass Transition Temperature, °C 100
-30
Maximum Temperature: Mechanical, °C 70
100
Specific Heat Capacity, J/kg-K 1250 to 1400
1880
Thermal Conductivity, W/m-K 0.14 to 0.22
0.17

Otherwise Unclassified Properties

Density, g/cm3 1.0
1.1
Limiting Oxygen Index (LOI), % 18
18

Common Calculations

Strength to Weight: Axial, points 8.5 to 12
3.4
Strength to Weight: Bending, points 22 to 26
11
Thermal Diffusivity, mm2/s 0.11 to 0.15
0.082