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PPE vs. PPA

Both PPE and PPA are thermoplastics. There are 16 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

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

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 2.3
2.1 to 2.2
Elongation at Break, % 30
30
Flexural Strength, MPa 75
95 to 110
Tensile Strength: Ultimate (UTS), MPa 55
57 to 69

Thermal Properties

Glass Transition Temperature, °C 85
92 to 130
Heat Deflection Temperature At 1.82 MPa (264 psi), °C 120
120
Melting Onset (Solidus), °C 260
310
Specific Heat Capacity, J/kg-K 1200
1400
Thermal Conductivity, W/m-K 0.22
0.15

Otherwise Unclassified Properties

Density, g/cm3 1.1
1.1
Water Absorption After 24 Hours, % 0.23
0.7

Common Calculations

Stiffness to Weight: Axial, points 1.2
1.0 to 1.1
Stiffness to Weight: Bending, points 42
38
Strength to Weight: Axial, points 14
14 to 17
Strength to Weight: Bending, points 30
29 to 33
Thermal Diffusivity, mm2/s 0.17
0.095