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30 CF PEEK vs. 7075-T6 Aluminum

30 CF PEEK and 7075-T6 aluminum belong to fundamentally different material chemistries. 30 CF PEEK is a polymeric material, while 7075-T6 aluminum is a metal. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 16 material properties with values for both materials. Properties with values for just one material (29, 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 30 CF PEEK and the bottom bar is 7075-T6 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 24
70
Elongation at Break, % 1.6
7.9
Shear Strength, MPa 100
330
Tensile Strength: Ultimate (UTS), MPa 200
560

Thermal Properties

Maximum Temperature: Mechanical, °C 330
200
Melting Onset (Solidus), °C 340
480
Specific Heat Capacity, J/kg-K 1520
870
Thermal Conductivity, W/m-K 0.93
130
Thermal Expansion, µm/m-K 15
23

Otherwise Unclassified Properties

Density, g/cm3 1.4
3.0

Common Calculations

Stiffness to Weight: Axial, points 9.5
13
Stiffness to Weight: Bending, points 69
46
Strength to Weight: Axial, points 41
51
Strength to Weight: Bending, points 55
50
Thermal Diffusivity, mm2/s 0.44
50
Thermal Shock Resistance, points 40
24