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7075 Aluminum vs. Phenolic

7075 aluminum and phenolic belong to fundamentally different material chemistries. 7075 aluminum is a metal, while phenolic is a polymeric material. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 14 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 7075 aluminum and the bottom bar is phenolic.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
3.8
Elongation at Break, % 1.8 to 12
2.0
Tensile Strength: Ultimate (UTS), MPa 240 to 590
48

Thermal Properties

Maximum Temperature: Mechanical, °C 200
150
Specific Heat Capacity, J/kg-K 870
1400
Thermal Conductivity, W/m-K 130
0.25
Thermal Expansion, µm/m-K 23
120

Otherwise Unclassified Properties

Density, g/cm3 3.0
1.3

Common Calculations

Stiffness to Weight: Axial, points 13
1.6
Stiffness to Weight: Bending, points 46
40
Strength to Weight: Axial, points 22 to 54
10
Strength to Weight: Bending, points 28 to 52
23
Thermal Diffusivity, mm2/s 50
0.14
Thermal Shock Resistance, points 10 to 25
7.5