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AISI 316 Stainless Steel vs. PMP

AISI 316 stainless steel and PMP belong to fundamentally different material chemistries. AISI 316 stainless steel is a metal, while PMP is a polymeric material. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 15 material properties with values for both materials. Properties with values for just one material (27, 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 AISI 316 stainless steel and the bottom bar is PMP.

AISI 316 (S31600) Stainless SteelPolymethylpentene (PMP)
Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
1.1
Elongation at Break, % 8.0 to 55
30
Tensile Strength: Ultimate (UTS), MPa 520 to 1180
24

Thermal Properties

Maximum Temperature: Mechanical, °C 590
140
Melting Onset (Solidus), °C 1380
230
Specific Heat Capacity, J/kg-K 470
1750
Thermal Conductivity, W/m-K 15
0.17
Thermal Expansion, µm/m-K 16
120

Otherwise Unclassified Properties

Density, g/cm3 7.9
0.83

Common Calculations

Stiffness to Weight: Axial, points 14
0.74
Stiffness to Weight: Bending, points 25
41
Strength to Weight: Axial, points 18 to 41
8.0
Strength to Weight: Bending, points 18 to 31
22
Thermal Diffusivity, mm2/s 4.1
0.12
Thermal Shock Resistance, points 11 to 26
13