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HDPE vs. PAI

Both HDPE and PAI are thermoplastics. There are 10 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.

For each property being compared, the top bar is HDPE and the bottom bar is PAI.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 1.0 to 1.3
1.4 to 1.6
Elongation at Break, % 2.5 to 100
3.0 to 12
Flexural Modulus, GPa 4.0 to 7.5
4.0 to 6.8
Impact Strength: Notched Izod, J/m 50 to 260
45 to 140
Maximum Temperature: Mechanical, °C 90
260
Specific Heat Capacity, J/kg-K 1330 to 2400
910 to 1000
Strength to Weight: Axial, points 6.9 to 17
19 to 34
Strength to Weight: Bending, points 19 to 32
33 to 49
Tensile Strength: Ultimate (UTS), MPa 24 to 80
100 to 180
Water Absorption At Saturation, % 0.1 to 0.3
1.5 to 1.7