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C76400 Nickel Silver vs. C72900 Copper-nickel

Both C76400 nickel silver and C72900 copper-nickel are copper alloys. They have 76% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is C76400 nickel silver and the bottom bar is C72900 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
120
Poisson's Ratio 0.32
0.34
Shear Modulus, GPa 46
45
Tensile Strength: Ultimate (UTS), MPa 590 to 610
870 to 1080

Thermal Properties

Latent Heat of Fusion, J/g 200
210
Maximum Temperature: Mechanical, °C 190
210
Melting Completion (Liquidus), °C 990
1120
Melting Onset (Solidus), °C 950
950
Specific Heat Capacity, J/kg-K 400
380
Thermal Conductivity, W/m-K 31
29
Thermal Expansion, µm/m-K 18
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 5.7
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 6.1
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 32
39
Density, g/cm3 8.4
8.8
Embodied Carbon, kg CO2/kg material 4.1
4.6
Embodied Energy, MJ/kg 63
72
Embodied Water, L/kg 300
360

Common Calculations

Stiffness to Weight: Axial, points 8.1
7.6
Stiffness to Weight: Bending, points 20
19
Strength to Weight: Axial, points 19 to 20
27 to 34
Strength to Weight: Bending, points 18 to 19
23 to 27
Thermal Diffusivity, mm2/s 9.3
8.6
Thermal Shock Resistance, points 19 to 20
31 to 38

Alloy Composition


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Copper (Cu), % 58.5 to 61.5
74.1 to 78
Iron (Fe), % 0 to 0.25
0 to 0.5
Lead (Pb), % 0 to 0.050
0 to 0.020
Magnesium (Mg), % 0
0 to 0.15
Manganese (Mn), % 0 to 0.5
0 to 0.3
Nickel (Ni), % 16.5 to 19.5
14.5 to 15.5
Niobium (Nb), % 0
0 to 0.1
Tin (Sn), % 0
7.5 to 8.5
Zinc (Zn), % 17.7 to 25
0 to 0.5
Residuals, % 0 to 0.5
0 to 0.3