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Grade M30H Nickel vs. AWS BVAg-31

Grade M30H nickel belongs to the nickel alloys classification, while AWS BVAg-31 belongs to the otherwise unclassified metals. They have a modest 30% of their average alloy composition in common, which, by itself, doesn't mean much. There are 15 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.

For each property being compared, the top bar is grade M30H nickel and the bottom bar is AWS BVAg-31.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 160
90
Poisson's Ratio 0.32
0.36
Shear Modulus, GPa 61
33
Tensile Strength: Ultimate (UTS), MPa 770
180

Thermal Properties

Latent Heat of Fusion, J/g 320
150
Melting Completion (Liquidus), °C 1250
850
Melting Onset (Solidus), °C 1200
820
Specific Heat Capacity, J/kg-K 440
280
Thermal Expansion, µm/m-K 13
18

Otherwise Unclassified Properties

Density, g/cm3 8.6
10

Common Calculations

Stiffness to Weight: Axial, points 10
4.9
Stiffness to Weight: Bending, points 21
15
Strength to Weight: Axial, points 25
4.9
Strength to Weight: Bending, points 22
7.0
Thermal Shock Resistance, points 27
7.8

Alloy Composition

Cadmium (Cd), % 0
0 to 0.0010
Carbon (C), % 0 to 0.3
0 to 0.0050
Copper (Cu), % 27 to 33
31 to 33
Iron (Fe), % 0 to 3.5
0
Lead (Pb), % 0
0 to 0.0020
Manganese (Mn), % 0 to 1.5
0
Nickel (Ni), % 57.9 to 70.3
0
Palladium (Pd), % 0
8.0 to 12
Phosphorus (P), % 0 to 0.030
0 to 0.0020
Silicon (Si), % 2.7 to 3.7
0
Silver (Ag), % 0
57 to 59
Sulfur (S), % 0 to 0.030
0
Zinc (Zn), % 0
0 to 0.0010