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PES vs. EN 1.4740 Stainless Steel

PES and EN 1.4740 stainless steel belong to fundamentally different material chemistries. PES is a polymeric material, while EN 1.4740 stainless steel is a metal. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 10 material properties with values for both materials. Properties with values for just one material (35, 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 EN 1.4740 stainless steel.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 1.4
7.6
Elastic (Young's, Tensile) Modulus, GPa 2.6
200
Elongation at Break, % 65
22
Maximum Temperature: Mechanical, °C 200
900
Specific Heat Capacity, J/kg-K 1100
490
Stiffness to Weight: Axial, points 1.1
14
Stiffness to Weight: Bending, points 33
25
Thermal Conductivity, W/m-K 0.18
18
Thermal Diffusivity, mm2/s 0.12
4.8
Thermal Expansion, µm/m-K 53
10