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7075 Aluminum vs. PA 6/12

7075 aluminum and PA 6/12 belong to fundamentally different material chemistries. 7075 aluminum is a metal, while PA 6/12 is a polymeric material. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 12 material properties with values for both materials. Properties with values for just one material (26, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is 7075 aluminum and the bottom bar is PA 6/12.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
1.7 to 2.2
Elongation at Break, % 1.8 to 12
30 to 120
Tensile Strength: Ultimate (UTS), MPa 240 to 590
40 to 58

Thermal Properties

Melting Onset (Solidus), °C 480
210
Specific Heat Capacity, J/kg-K 870
1590
Thermal Conductivity, W/m-K 130
0.22

Otherwise Unclassified Properties

Density, g/cm3 3.0
1.1

Common Calculations

Stiffness to Weight: Axial, points 13
0.89 to 1.2
Stiffness to Weight: Bending, points 46
38 to 41
Strength to Weight: Axial, points 22 to 54
10 to 15
Strength to Weight: Bending, points 28 to 52
25 to 31
Thermal Diffusivity, mm2/s 50
0.13