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7075 Aluminum vs. CR Rubber

7075 aluminum and CR rubber belong to fundamentally different material chemistries. 7075 aluminum is a metal, while CR rubber is a polymeric material. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 9 material properties with values for both materials. Properties with values for just one material (26, in this case) are not shown.

For each property being compared, the top bar is 7075 aluminum and the bottom bar is CR rubber.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 3.0
1.5
Elongation at Break, % 1.8 to 12
380
Maximum Temperature: Mechanical, °C 200
130
Specific Heat Capacity, J/kg-K 870
1120
Strength to Weight: Axial, points 22 to 54
1.9
Strength to Weight: Bending, points 28 to 52
7.1
Tensile Strength: Ultimate (UTS), MPa 240 to 590
11
Thermal Conductivity, W/m-K 130
0.19
Thermal Diffusivity, mm2/s 50
0.11