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SBR Rubber vs. PBT

SBR rubber belongs to the thermoset elastomers (rubber) classification, while PBT belongs to the thermoplastics. There are 8 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

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

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 1.1
1.3 to 1.5
Elongation at Break, % 530
2.5 to 43
Glass Transition Temperature, °C -30
40
Limiting Oxygen Index (LOI), % 18
20
Specific Heat Capacity, J/kg-K 1880
1040 to 1200
Strength to Weight: Axial, points 3.4
12 to 25
Strength to Weight: Bending, points 11
25 to 38
Tensile Strength: Ultimate (UTS), MPa 14
58 to 140