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6061 Aluminum vs. PPA

6061 aluminum and PPA belong to fundamentally different material chemistries. 6061 aluminum is a metal, while PPA is a polymeric material. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 13 material properties with values for both materials. Properties with values for just one material (24, 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 6061 aluminum and the bottom bar is PPA.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
2.1 to 2.2
Elongation at Break, % 3.4 to 20
30
Poisson's Ratio 0.33
0.4
Tensile Strength: Ultimate (UTS), MPa 130 to 410
57 to 69

Thermal Properties

Melting Onset (Solidus), °C 580
310
Specific Heat Capacity, J/kg-K 900
1400
Thermal Conductivity, W/m-K 170
0.15

Otherwise Unclassified Properties

Density, g/cm3 2.7
1.1

Common Calculations

Stiffness to Weight: Axial, points 14
1.0 to 1.1
Stiffness to Weight: Bending, points 50
38
Strength to Weight: Axial, points 13 to 42
14 to 17
Strength to Weight: Bending, points 21 to 45
29 to 33
Thermal Diffusivity, mm2/s 68
0.095