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PES vs. EN 1.4123 Stainless Steel

PES and EN 1.4123 stainless steel belong to fundamentally different material chemistries. PES is a polymeric material, while EN 1.4123 stainless steel is a metal. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 13 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 EN 1.4123 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 2.6
200
Tensile Strength: Ultimate (UTS), MPa 87
720 to 810

Thermal Properties

Maximum Temperature: Mechanical, °C 200
840
Specific Heat Capacity, J/kg-K 1100
480
Thermal Conductivity, W/m-K 0.18
23
Thermal Expansion, µm/m-K 53
10

Otherwise Unclassified Properties

Density, g/cm3 1.4
7.7

Common Calculations

Stiffness to Weight: Axial, points 1.1
14
Stiffness to Weight: Bending, points 33
25
Strength to Weight: Axial, points 18
26 to 29
Strength to Weight: Bending, points 32
23 to 25
Thermal Diffusivity, mm2/s 0.12
6.3
Thermal Shock Resistance, points 45
26 to 29