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AWS BVAg-31 vs. Grade N7M Nickel

AWS BVAg-31 belongs to the otherwise unclassified metals classification, while grade N7M nickel belongs to the nickel alloys. There are 15 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 AWS BVAg-31 and the bottom bar is grade N7M nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 90
220
Poisson's Ratio 0.36
0.31
Shear Modulus, GPa 33
85
Tensile Strength: Ultimate (UTS), MPa 180
590

Thermal Properties

Latent Heat of Fusion, J/g 150
320
Melting Completion (Liquidus), °C 850
1650
Melting Onset (Solidus), °C 820
1590
Specific Heat Capacity, J/kg-K 280
390
Thermal Expansion, µm/m-K 18
9.9

Otherwise Unclassified Properties

Density, g/cm3 10
9.3

Common Calculations

Stiffness to Weight: Axial, points 4.9
13
Stiffness to Weight: Bending, points 15
22
Strength to Weight: Axial, points 4.9
18
Strength to Weight: Bending, points 7.0
17
Thermal Shock Resistance, points 7.8
19

Alloy Composition

Cadmium (Cd), % 0 to 0.0010
0
Carbon (C), % 0 to 0.0050
0 to 0.070
Chromium (Cr), % 0
0 to 1.0
Copper (Cu), % 31 to 33
0
Iron (Fe), % 0
0 to 3.0
Lead (Pb), % 0 to 0.0020
0
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
30 to 33
Nickel (Ni), % 0
60.9 to 70
Palladium (Pd), % 8.0 to 12
0
Phosphorus (P), % 0 to 0.0020
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Silver (Ag), % 57 to 59
0
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 0 to 0.0010
0