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PPA vs. PTT

Both PPA and PTT are thermoplastics. There are 11 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

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

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 2.1 to 2.2
2.5
Elongation at Break, % 30
60
Flexural Modulus, GPa 2.3 to 2.4
2.8
Flexural Strength, MPa 95 to 110
100
Tensile Strength: Ultimate (UTS), MPa 57 to 69
60

Thermal Properties

Melting Onset (Solidus), °C 310
230

Otherwise Unclassified Properties

Density, g/cm3 1.1
1.3

Common Calculations

Stiffness to Weight: Axial, points 1.0 to 1.1
1.0
Stiffness to Weight: Bending, points 38
34
Strength to Weight: Axial, points 14 to 17
13
Strength to Weight: Bending, points 29 to 33
26