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PES vs. 7020 Aluminum

PES and 7020 aluminum belong to fundamentally different material chemistries. PES is a polymeric material, while 7020 aluminum is a metal. 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 (34, 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 PES and the bottom bar is 7020 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 2.6
70
Elongation at Break, % 65
8.4 to 14
Tensile Strength: Ultimate (UTS), MPa 87
190 to 390

Thermal Properties

Maximum Temperature: Mechanical, °C 200
210
Specific Heat Capacity, J/kg-K 1100
880
Thermal Conductivity, W/m-K 0.18
150
Thermal Expansion, µm/m-K 53
23

Otherwise Unclassified Properties

Density, g/cm3 1.4
2.9

Common Calculations

Stiffness to Weight: Axial, points 1.1
13
Stiffness to Weight: Bending, points 33
47
Strength to Weight: Axial, points 18
18 to 37
Strength to Weight: Bending, points 32
25 to 41
Thermal Diffusivity, mm2/s 0.12
59
Thermal Shock Resistance, points 45
8.3 to 17