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C70700 Copper-nickel vs. AWS BNi-7

C70700 copper-nickel belongs to the copper alloys classification, while AWS BNi-7 belongs to the nickel 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 C70700 copper-nickel and the bottom bar is AWS BNi-7.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

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