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ASTM B631 Class C vs. S38815 Stainless Steel

ASTM B631 class C belongs to the otherwise unclassified metals classification, while S38815 stainless steel belongs to the iron alloys. There are 12 material properties with values for both materials. Properties with values for just one material (22, in this case) are not shown.

For each property being compared, the top bar is ASTM B631 class C and the bottom bar is S38815 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180 to 190
190
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 66 to 71
74

Thermal Properties

Latent Heat of Fusion, J/g 140 to 150
370
Melting Completion (Liquidus), °C 2090 to 2230
1360
Specific Heat Capacity, J/kg-K 180
500
Thermal Expansion, µm/m-K 14
15

Otherwise Unclassified Properties

Density, g/cm3 13 to 14
7.5
Embodied Carbon, kg CO2/kg material 55 to 59
3.8
Embodied Energy, MJ/kg 860 to 920
54

Common Calculations

Stiffness to Weight: Axial, points 7.4 to 7.6
14
Stiffness to Weight: Bending, points 14
25