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ASTM B631 Class A vs. S21603 Stainless Steel

ASTM B631 class A belongs to the otherwise unclassified metals classification, while S21603 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 A and the bottom bar is S21603 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
200
Poisson's Ratio 0.3
0.28
Rockwell B Hardness 63 to 98
88
Shear Modulus, GPa 85 to 86
79

Thermal Properties

Latent Heat of Fusion, J/g 160
290
Melting Completion (Liquidus), °C 2680 to 2690
1420
Specific Heat Capacity, J/kg-K 160
480
Thermal Expansion, µm/m-K 11
17

Otherwise Unclassified Properties

Density, g/cm3 15
7.7
Embodied Carbon, kg CO2/kg material 43
3.6
Embodied Energy, MJ/kg 670
50

Common Calculations

Stiffness to Weight: Axial, points 8.5
14
Stiffness to Weight: Bending, points 14
25