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ASTM B631 Class A vs. AWS BAg-2a

Both ASTM B631 class A and AWS BAg-2a are otherwise unclassified metals. There are 12 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 AWS BAg-2a.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
83
Poisson's Ratio 0.3
0.32
Shear Modulus, GPa 85 to 86
31

Thermal Properties

Latent Heat of Fusion, J/g 160
130
Melting Completion (Liquidus), °C 2680 to 2690
710
Specific Heat Capacity, J/kg-K 160
310
Thermal Expansion, µm/m-K 11
23

Otherwise Unclassified Properties

Density, g/cm3 15
8.8
Embodied Carbon, kg CO2/kg material 43
30
Embodied Energy, MJ/kg 670
470

Common Calculations

Stiffness to Weight: Axial, points 8.5
5.2
Stiffness to Weight: Bending, points 14
17