AWS BVAu-7 vs. C71580 Copper-nickel

AWS BVAu-7 belongs to the otherwise unclassified metals classification, while C71580 copper-nickel belongs to the copper alloys. They have a modest 25% 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 AWS BVAu-7 and the bottom bar is C71580 copper-nickel.

AWS BVAu-7 (P00507) Vacuum Service Filler Metal UNS C71580 (CuNi30) Copper-Nickel

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		130
Elastic (Young's, Tensile) Modulus, GPa		140

Poisson's Ratio		0.38
Poisson's Ratio		0.33

Shear Modulus, GPa		45
Shear Modulus, GPa		51

Tensile Strength: Ultimate (UTS), MPa		200
Tensile Strength: Ultimate (UTS), MPa		330

Thermal Properties

Latent Heat of Fusion, J/g		140
Latent Heat of Fusion, J/g		230

Melting Completion (Liquidus), °C		1120
Melting Completion (Liquidus), °C		1180

Melting Onset (Solidus), °C		1100
Melting Onset (Solidus), °C		1120

Specific Heat Capacity, J/kg-K		240
Specific Heat Capacity, J/kg-K		400

Thermal Expansion, µm/m-K		13
Thermal Expansion, µm/m-K		15

Otherwise Unclassified Properties

Density, g/cm³		15
Density, g/cm³		8.9

Common Calculations

Stiffness to Weight: Axial, points		4.7
Stiffness to Weight: Axial, points		8.5

Stiffness to Weight: Bending, points		11
Stiffness to Weight: Bending, points		19

Strength to Weight: Axial, points		3.7
Strength to Weight: Axial, points		10

Strength to Weight: Bending, points		5.1
Strength to Weight: Bending, points		12

Thermal Shock Resistance, points		8.9
Thermal Shock Resistance, points		11

Alloy Composition

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Cadmium (Cd), %		0 to 0.0010
Cadmium (Cd), %		0

Carbon (C), %		0 to 0.0050
Carbon (C), %		0 to 0.070

Cobalt (Co), %		0 to 0.060
Cobalt (Co), %		0

Copper (Cu), %		0
Copper (Cu), %		65.5 to 71

Gold (Au), %		49.5 to 50.5
Gold (Au), %		0

Iron (Fe), %		0
Iron (Fe), %		0 to 0.5

Lead (Pb), %		0 to 0.0020
Lead (Pb), %		0 to 0.050

Manganese (Mn), %		0
Manganese (Mn), %		0 to 0.3

Nickel (Ni), %		24.5 to 25.5
Nickel (Ni), %		29 to 33

Palladium (Pd), %		23.9 to 26
Palladium (Pd), %		0

Phosphorus (P), %		0 to 0.0020
Phosphorus (P), %		0

Zinc (Zn), %		0 to 0.0010
Zinc (Zn), %		0 to 0.050

Residuals, %		0
Residuals, %		0 to 0.5