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ASTM B631 Class A vs. SAE-AISI M46 Steel

ASTM B631 class A belongs to the otherwise unclassified metals classification, while SAE-AISI M46 steel belongs to the iron alloys. There are 14 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is ASTM B631 class A and the bottom bar is SAE-AISI M46 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
200
Poisson's Ratio 0.3
0.29
Shear Modulus, GPa 85 to 86
77

Thermal Properties

Latent Heat of Fusion, J/g 160
270
Melting Completion (Liquidus), °C 2680 to 2690
1540
Specific Heat Capacity, J/kg-K 160
450
Thermal Conductivity, W/m-K 420
18
Thermal Expansion, µm/m-K 11
12

Otherwise Unclassified Properties

Density, g/cm3 15
8.1
Embodied Carbon, kg CO2/kg material 43
12
Embodied Energy, MJ/kg 670
180

Common Calculations

Stiffness to Weight: Axial, points 8.5
14
Stiffness to Weight: Bending, points 14
24
Thermal Diffusivity, mm2/s 180
4.9