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AWS BNi-7 vs. C70700 Copper-nickel

AWS BNi-7 belongs to the nickel alloys classification, while C70700 copper-nickel belongs to the copper alloys. There are 19 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is AWS BNi-7 and the bottom bar is C70700 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 170
120
Poisson's Ratio 0.3
0.34
Shear Modulus, GPa 67
46
Tensile Strength: Ultimate (UTS), MPa 550
320

Thermal Properties

Latent Heat of Fusion, J/g 280
220
Melting Completion (Liquidus), °C 890
1120
Melting Onset (Solidus), °C 890
1060
Specific Heat Capacity, J/kg-K 490
390
Thermal Expansion, µm/m-K 11
16

Otherwise Unclassified Properties

Base Metal Price, % relative 55
34
Density, g/cm3 8.0
8.9
Embodied Carbon, kg CO2/kg material 8.8
3.4
Embodied Energy, MJ/kg 120
52
Embodied Water, L/kg 240
300

Common Calculations

Stiffness to Weight: Axial, points 12
7.6
Stiffness to Weight: Bending, points 23
19
Strength to Weight: Axial, points 19
10
Strength to Weight: Bending, points 19
12
Thermal Shock Resistance, points 21
12

Alloy Composition

Aluminum (Al), % 0 to 0.050
0
Boron (B), % 0 to 0.010
0
Carbon (C), % 0 to 0.060
0
Chromium (Cr), % 13 to 15
0
Cobalt (Co), % 0 to 0.1
0
Copper (Cu), % 0
88.5 to 90.5
Iron (Fe), % 0 to 0.2
0 to 0.050
Manganese (Mn), % 0 to 0.040
0 to 0.5
Nickel (Ni), % 73.3 to 77.3
9.5 to 10.5
Phosphorus (P), % 9.7 to 10.5
0
Selenium (Se), % 0 to 0.0050
0
Silicon (Si), % 0 to 0.1
0
Sulfur (S), % 0 to 0.020
0
Titanium (Ti), % 0 to 0.050
0
Zirconium (Zr), % 0 to 0.050
0
Residuals, % 0
0 to 0.5