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C71640 Copper-nickel vs. C79200 Nickel Silver

Both C71640 copper-nickel and C79200 nickel silver 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 (2, in this case) are not shown.

For each property being compared, the top bar is C71640 copper-nickel and the bottom bar is C79200 nickel silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 140
120
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 52
44
Tensile Strength: Ultimate (UTS), MPa 490 to 630
480 to 540

Thermal Properties

Latent Heat of Fusion, J/g 240
190
Maximum Temperature: Mechanical, °C 260
170
Melting Completion (Liquidus), °C 1180
950
Melting Onset (Solidus), °C 1120
910
Specific Heat Capacity, J/kg-K 410
390
Thermal Conductivity, W/m-K 29
42
Thermal Expansion, µm/m-K 15
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
28
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
30

Otherwise Unclassified Properties

Base Metal Price, % relative 40
30
Density, g/cm3 8.9
8.4
Embodied Carbon, kg CO2/kg material 5.0
3.6
Embodied Energy, MJ/kg 73
56
Embodied Water, L/kg 280
310

Common Calculations

Stiffness to Weight: Axial, points 8.7
7.7
Stiffness to Weight: Bending, points 20
19
Strength to Weight: Axial, points 15 to 20
16 to 18
Strength to Weight: Bending, points 16 to 18
16 to 18
Thermal Diffusivity, mm2/s 8.2
13
Thermal Shock Resistance, points 16 to 21
16 to 18

Alloy Composition


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Copper (Cu), % 61.7 to 67.8
59 to 66.5
Iron (Fe), % 1.7 to 2.3
0 to 0.25
Lead (Pb), % 0 to 0.050
0.8 to 1.4
Manganese (Mn), % 1.5 to 2.5
0 to 0.5
Nickel (Ni), % 29 to 32
11 to 13
Zinc (Zn), % 0 to 1.0
17.9 to 29.2
Residuals, % 0 to 0.5
0 to 0.5