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AWS BNi-8 vs. ASTM B631 Class A

AWS BNi-8 belongs to the nickel alloys classification, while ASTM B631 class A belongs to the otherwise unclassified metals. There are 12 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is AWS BNi-8 and the bottom bar is ASTM B631 class A.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
220
Poisson's Ratio 0.32
0.3
Shear Modulus, GPa 67
85 to 86

Thermal Properties

Latent Heat of Fusion, J/g 390
160
Melting Completion (Liquidus), °C 1010
2680 to 2690
Specific Heat Capacity, J/kg-K 480
160
Thermal Expansion, µm/m-K 13
11

Otherwise Unclassified Properties

Density, g/cm3 7.9
15
Embodied Carbon, kg CO2/kg material 8.2
43
Embodied Energy, MJ/kg 120
670

Common Calculations

Stiffness to Weight: Axial, points 12
8.5
Stiffness to Weight: Bending, points 24
14