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ASTM B631 Class B vs. S31727 Stainless Steel

ASTM B631 class B belongs to the otherwise unclassified metals classification, while S31727 stainless steel belongs to the iron alloys. There are 13 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 B and the bottom bar is S31727 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Poisson's Ratio 0.31
0.28
Rockwell B Hardness 53 to 85
83
Shear Modulus, GPa 78 to 79
78

Thermal Properties

Latent Heat of Fusion, J/g 150
290
Melting Completion (Liquidus), °C 2460 to 2480
1440
Specific Heat Capacity, J/kg-K 170
470
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Density, g/cm3 14
8.0
Embodied Carbon, kg CO2/kg material 49
4.7
Embodied Energy, MJ/kg 760
64

Common Calculations

Stiffness to Weight: Axial, points 8.1
14
Stiffness to Weight: Bending, points 14
24