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PAI vs. PS

Both PAI and PS are thermoplastics. There are 21 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 PAI and the bottom bar is PS.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 4.0 to 8.3
1.9 to 2.9
Elongation at Break, % 3.0 to 12
1.8 to 40
Flexural Strength, MPa 160 to 320
62 to 80
Impact Strength: Notched Izod, J/m 45 to 140
19 to 45
Tensile Strength: Ultimate (UTS), MPa 100 to 180
32 to 44

Thermal Properties

Glass Transition Temperature, °C 280
100
Maximum Temperature: Autoignition, °C 530
360 to 420
Maximum Temperature: Decomposition, °C 490
320 to 330
Maximum Temperature: Mechanical, °C 260
70
Specific Heat Capacity, J/kg-K 910 to 1000
1250 to 1400
Thermal Conductivity, W/m-K 0.26 to 0.53
0.14 to 0.22
Thermal Expansion, µm/m-K 15 to 34
80 to 98

Otherwise Unclassified Properties

Density, g/cm3 1.4 to 1.6
1.0
Limiting Oxygen Index (LOI), % 45
18
Water Absorption After 24 Hours, % 0.3 to 0.4
0.040 to 0.080

Common Calculations

Stiffness to Weight: Axial, points 1.6 to 3.2
1.0 to 1.5
Stiffness to Weight: Bending, points 38 to 47
40 to 45
Strength to Weight: Axial, points 19 to 34
8.5 to 12
Strength to Weight: Bending, points 33 to 49
22 to 26
Thermal Diffusivity, mm2/s 0.16 to 0.41
0.11 to 0.15
Thermal Shock Resistance, points 48 to 110
11 to 15