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2024 Aluminum vs. CAP

2024 aluminum and CAP belong to fundamentally different material chemistries. 2024 aluminum is a metal, while CAP is a polymeric material. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 11 material properties with values for both materials. Properties with values for just one material (31, 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 2024 aluminum and the bottom bar is CAP.

Metric UnitsUS Customary Units

Mechanical Properties

Elongation at Break, % 4.0 to 16
35 to 50
Tensile Strength: Ultimate (UTS), MPa 200 to 540
28 to 45
Tensile Strength: Yield (Proof), MPa 100 to 490
22 to 40

Thermal Properties

Specific Heat Capacity, J/kg-K 880
1480
Thermal Conductivity, W/m-K 120
0.25
Thermal Expansion, µm/m-K 23
14

Otherwise Unclassified Properties

Density, g/cm3 3.0
1.2

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20 to 68
9.1 to 22
Strength to Weight: Axial, points 18 to 50
6.5 to 10
Strength to Weight: Bending, points 25 to 49
17 to 23
Thermal Diffusivity, mm2/s 46
0.14