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PPE vs. PET

Both PPE and PET are thermoplastics. There are 13 material properties with values for both materials. Properties with values for just one material (17, in this case) are not shown.

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

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 2.3
3.5 to 11
Elongation at Break, % 30
2.5 to 70
Tensile Strength: Ultimate (UTS), MPa 55
60 to 140

Thermal Properties

Glass Transition Temperature, °C 85
70
Maximum Temperature: Autoignition, °C 430
410
Maximum Temperature: Mechanical, °C 90
80
Melting Onset (Solidus), °C 260
260
Specific Heat Capacity, J/kg-K 1200
1000 to 1150

Otherwise Unclassified Properties

Density, g/cm3 1.1
1.4 to 1.6

Common Calculations

Stiffness to Weight: Axial, points 1.2
1.2 to 4.4
Stiffness to Weight: Bending, points 42
32 to 54
Strength to Weight: Axial, points 14
12 to 27
Strength to Weight: Bending, points 30
25 to 41