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C70700 Copper-nickel vs. AWS BVAu-2

C70700 copper-nickel belongs to the copper alloys classification, while AWS BVAu-2 belongs to the otherwise unclassified metals. They have a modest 20% of their average alloy composition in common, which, by itself, doesn't mean much. There are 15 material properties with values for both materials. Properties with values for just one material (16, in this case) are not shown.

For each property being compared, the top bar is C70700 copper-nickel and the bottom bar is AWS BVAu-2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
100
Poisson's Ratio 0.34
0.4
Shear Modulus, GPa 46
36
Tensile Strength: Ultimate (UTS), MPa 320
150

Thermal Properties

Latent Heat of Fusion, J/g 220
92
Melting Completion (Liquidus), °C 1120
890
Melting Onset (Solidus), °C 1060
890
Specific Heat Capacity, J/kg-K 390
180
Thermal Expansion, µm/m-K 16
15

Otherwise Unclassified Properties

Density, g/cm3 8.9
17

Common Calculations

Stiffness to Weight: Axial, points 7.6
3.3
Stiffness to Weight: Bending, points 19
9.1
Strength to Weight: Axial, points 10
2.4
Strength to Weight: Bending, points 12
3.6
Thermal Shock Resistance, points 12
7.1

Alloy Composition

Cadmium (Cd), % 0
0 to 0.0010
Carbon (C), % 0
0 to 0.0050
Copper (Cu), % 88.5 to 90.5
19.5 to 20.5
Gold (Au), % 0
79.5 to 80.5
Iron (Fe), % 0 to 0.050
0
Lead (Pb), % 0
0 to 0.0020
Manganese (Mn), % 0 to 0.5
0
Nickel (Ni), % 9.5 to 10.5
0
Phosphorus (P), % 0
0 to 0.0020
Zinc (Zn), % 0
0 to 0.0010
Residuals, % 0 to 0.5
0