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AWS BAg-9 vs. C72700 Copper-nickel

AWS BAg-9 belongs to the otherwise unclassified metals classification, while C72700 copper-nickel belongs to the copper alloys. They have a modest 20% of their average alloy composition in common, which, by itself, doesn't mean much. There are 16 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is AWS BAg-9 and the bottom bar is C72700 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 82
120
Poisson's Ratio 0.35
0.34
Shear Modulus, GPa 31
44
Tensile Strength: Ultimate (UTS), MPa 140
460 to 1070

Thermal Properties

Latent Heat of Fusion, J/g 130
210
Melting Completion (Liquidus), °C 720
1100
Melting Onset (Solidus), °C 670
930
Specific Heat Capacity, J/kg-K 290
380
Thermal Expansion, µm/m-K 20
17

Otherwise Unclassified Properties

Density, g/cm3 9.6
8.8
Embodied Energy, MJ/kg 980
62

Common Calculations

Stiffness to Weight: Axial, points 4.8
7.4
Stiffness to Weight: Bending, points 15
19
Strength to Weight: Axial, points 4.1
14 to 34
Strength to Weight: Bending, points 6.3
15 to 26
Thermal Shock Resistance, points 6.0
16 to 38

Alloy Composition


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Copper (Cu), % 19 to 21
82.1 to 86
Iron (Fe), % 0
0 to 0.5
Lead (Pb), % 0
0 to 0.020
Magnesium (Mg), % 0
0 to 0.15
Manganese (Mn), % 0
0.050 to 0.3
Nickel (Ni), % 0
8.5 to 9.5
Niobium (Nb), % 0
0 to 0.1
Silver (Ag), % 64 to 66
0
Tin (Sn), % 0
5.5 to 6.5
Zinc (Zn), % 13 to 17
0 to 0.5
Residuals, % 0 to 0.15
0 to 0.3