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PET vs. PMQ Rubber

PET belongs to the thermoplastics classification, while PMQ rubber belongs to the thermoset elastomers (rubber). There are 11 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is PET and the bottom bar is PMQ rubber.

Metric UnitsUS Customary Units

Mechanical Properties

Elongation at Break, % 2.5 to 70
480
Tensile Strength: Ultimate (UTS), MPa 60 to 140
8.0

Thermal Properties

Glass Transition Temperature, °C 70
-130
Maximum Temperature: Autoignition, °C 410
410
Maximum Temperature: Decomposition, °C 390
460
Maximum Temperature: Mechanical, °C 80
220
Specific Heat Capacity, J/kg-K 1000 to 1150
1590

Otherwise Unclassified Properties

Density, g/cm3 1.4 to 1.6
1.2
Limiting Oxygen Index (LOI), % 21
32

Common Calculations

Strength to Weight: Axial, points 12 to 27
1.9
Strength to Weight: Bending, points 25 to 41
7.4