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AWS ERNi-1 vs. ASTM B631 Class A

AWS ERNi-1 belongs to the nickel alloys classification, while ASTM B631 class A belongs to the otherwise unclassified metals. There are 16 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is AWS ERNi-1 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 0.31
0.3
Shear Modulus, GPa 69
85 to 86

Thermal Properties

Latent Heat of Fusion, J/g 300
160
Melting Completion (Liquidus), °C 1360
2680 to 2690
Specific Heat Capacity, J/kg-K 450
160
Thermal Conductivity, W/m-K 73
420
Thermal Expansion, µm/m-K 11
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 19
40 to 47
Electrical Conductivity: Equal Weight (Specific), % IACS 19
25 to 29

Otherwise Unclassified Properties

Density, g/cm3 8.7
15
Embodied Carbon, kg CO2/kg material 11
43
Embodied Energy, MJ/kg 150
670

Common Calculations

Stiffness to Weight: Axial, points 12
8.5
Stiffness to Weight: Bending, points 22
14
Thermal Diffusivity, mm2/s 19
180