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PES vs. R30008 Cobalt

PES and R30008 cobalt belong to fundamentally different material chemistries. PES is a polymeric material, while R30008 cobalt is a metal. 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 (32, 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 R30008 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 2.6
210
Elongation at Break, % 65
1.1 to 73
Tensile Strength: Ultimate (UTS), MPa 87
950 to 1700

Thermal Properties

Specific Heat Capacity, J/kg-K 1100
450
Thermal Expansion, µm/m-K 53
13

Otherwise Unclassified Properties

Density, g/cm3 1.4
8.4

Common Calculations

Stiffness to Weight: Axial, points 1.1
14
Stiffness to Weight: Bending, points 33
24
Strength to Weight: Axial, points 18
31 to 56
Strength to Weight: Bending, points 32
25 to 37
Thermal Shock Resistance, points 45
25 to 44