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AWS BNi-4 vs. Grade N7M Nickel

Both AWS BNi-4 and grade N7M nickel 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 AWS BNi-4 and the bottom bar is grade N7M nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
220
Poisson's Ratio 0.31
0.31
Shear Modulus, GPa 67
85
Tensile Strength: Ultimate (UTS), MPa 430
590

Thermal Properties

Latent Heat of Fusion, J/g 340
320
Melting Completion (Liquidus), °C 1070
1650
Melting Onset (Solidus), °C 980
1590
Specific Heat Capacity, J/kg-K 470
390
Thermal Expansion, µm/m-K 11
9.9

Otherwise Unclassified Properties

Base Metal Price, % relative 60
75
Density, g/cm3 8.5
9.3
Embodied Carbon, kg CO2/kg material 10
16
Embodied Energy, MJ/kg 140
200
Embodied Water, L/kg 220
270

Common Calculations

Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 22
22
Strength to Weight: Axial, points 14
18
Strength to Weight: Bending, points 15
17
Thermal Shock Resistance, points 16
19

Alloy Composition

Aluminum (Al), % 0 to 0.050
0
Boron (B), % 1.5 to 2.2
0
Carbon (C), % 0 to 0.060
0 to 0.070
Chromium (Cr), % 0
0 to 1.0
Cobalt (Co), % 0 to 0.1
0
Iron (Fe), % 0 to 1.5
0 to 3.0
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
30 to 33
Nickel (Ni), % 91.4 to 95.5
60.9 to 70
Phosphorus (P), % 0 to 0.020
0 to 0.040
Selenium (Se), % 0 to 0.0050
0
Silicon (Si), % 3.0 to 4.0
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.030
Titanium (Ti), % 0 to 0.050
0
Zirconium (Zr), % 0 to 0.050
0
Residuals, % 0 to 0.5
0