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PA 6/12 vs. PEI

Both PA 6/12 and PEI are thermoplastics. There are 17 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is PA 6/12 and the bottom bar is PEI.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 1.7 to 2.2
3.4 to 5.6
Elongation at Break, % 30 to 120
3.0 to 34
Flexural Modulus, GPa 1.2 to 2.2
3.4 to 5.9
Flexural Strength, MPa 45 to 64
140 to 210
Tensile Strength: Ultimate (UTS), MPa 40 to 58
110 to 160

Thermal Properties

Maximum Temperature: Decomposition, °C 450
530
Specific Heat Capacity, J/kg-K 1590
1050 to 1220
Thermal Conductivity, W/m-K 0.22
0.18 to 0.23

Otherwise Unclassified Properties

Density, g/cm3 1.1
1.3 to 1.5
Limiting Oxygen Index (LOI), % 25
47 to 50
Water Absorption After 24 Hours, % 0.25
0.17 to 0.25
Water Absorption At Saturation, % 3.0
0.9 to 1.3

Common Calculations

Stiffness to Weight: Axial, points 0.89 to 1.2
1.5 to 2.1
Stiffness to Weight: Bending, points 38 to 41
39
Strength to Weight: Axial, points 10 to 15
24 to 30
Strength to Weight: Bending, points 25 to 31
40 to 44
Thermal Diffusivity, mm2/s 0.13
0.11 to 0.14