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AWS BNi-1a vs. Grade N7M Nickel

Both AWS BNi-1a and grade N7M nickel are nickel alloys. They have 68% 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-1a 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 0.3
0.31
Shear Modulus, GPa 70
85
Tensile Strength: Ultimate (UTS), MPa 450
590

Thermal Properties

Latent Heat of Fusion, J/g 370
320
Melting Completion (Liquidus), °C 1080
1650
Melting Onset (Solidus), °C 980
1590
Specific Heat Capacity, J/kg-K 500
390
Thermal Expansion, µm/m-K 12
9.9

Otherwise Unclassified Properties

Base Metal Price, % relative 55
75
Density, g/cm3 8.0
9.3
Embodied Carbon, kg CO2/kg material 8.8
16
Embodied Energy, MJ/kg 120
200
Embodied Water, L/kg 240
270

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
22
Strength to Weight: Axial, points 16
18
Strength to Weight: Bending, points 16
17
Thermal Shock Resistance, points 15
19

Alloy Composition

Aluminum (Al), % 0 to 0.050
0
Boron (B), % 2.8 to 3.5
0
Carbon (C), % 0 to 0.060
0 to 0.070
Chromium (Cr), % 13 to 15
0 to 1.0
Cobalt (Co), % 0 to 0.1
0
Iron (Fe), % 4.0 to 5.0
0 to 3.0
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
30 to 33
Nickel (Ni), % 70.6 to 76.3
60.9 to 70
Phosphorus (P), % 0 to 0.020
0 to 0.040
Selenium (Se), % 0 to 0.0050
0
Silicon (Si), % 4.0 to 5.0
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