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Grade N7M Nickel vs. AWS BNi-5

Both grade N7M nickel and AWS BNi-5 are nickel alloys. They have 67% of their average alloy composition in common. There are 19 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is grade N7M nickel and the bottom bar is AWS BNi-5.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 85
72
Tensile Strength: Ultimate (UTS), MPa 590
470

Thermal Properties

Latent Heat of Fusion, J/g 320
470
Melting Completion (Liquidus), °C 1650
1140
Melting Onset (Solidus), °C 1590
1080
Specific Heat Capacity, J/kg-K 390
510
Thermal Expansion, µm/m-K 9.9
12

Otherwise Unclassified Properties

Base Metal Price, % relative 75
55
Density, g/cm3 9.3
7.7
Embodied Carbon, kg CO2/kg material 16
8.9
Embodied Energy, MJ/kg 200
130
Embodied Water, L/kg 270
260

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 22
25
Strength to Weight: Axial, points 18
17
Strength to Weight: Bending, points 17
17
Thermal Shock Resistance, points 19
15

Alloy Composition

Aluminum (Al), % 0
0 to 0.050
Boron (B), % 0
0 to 0.030
Carbon (C), % 0 to 0.070
0 to 0.060
Chromium (Cr), % 0 to 1.0
18.5 to 19.5
Cobalt (Co), % 0
0 to 0.1
Iron (Fe), % 0 to 3.0
0
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 30 to 33
0
Nickel (Ni), % 60.9 to 70
69.1 to 71.8
Phosphorus (P), % 0 to 0.040
0 to 0.020
Selenium (Se), % 0
0 to 0.0050
Silicon (Si), % 0 to 1.0
9.8 to 10.5
Sulfur (S), % 0 to 0.030
0 to 0.020
Titanium (Ti), % 0
0 to 0.050
Zirconium (Zr), % 0
0 to 0.050
Residuals, % 0
0 to 0.5