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C72700 Copper-nickel vs. C76200 Nickel Silver

Both C72700 copper-nickel and C76200 nickel silver are copper alloys. They have 69% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is C72700 copper-nickel and the bottom bar is C76200 nickel silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
120
Poisson's Ratio 0.34
0.31
Shear Modulus, GPa 44
44
Tensile Strength: Ultimate (UTS), MPa 460 to 1070
390 to 790

Thermal Properties

Latent Heat of Fusion, J/g 210
190
Maximum Temperature: Mechanical, °C 200
170
Melting Completion (Liquidus), °C 1100
1030
Melting Onset (Solidus), °C 930
980
Specific Heat Capacity, J/kg-K 380
390
Thermal Conductivity, W/m-K 54
45
Thermal Expansion, µm/m-K 17
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
9.0
Electrical Conductivity: Equal Weight (Specific), % IACS 11
9.8

Otherwise Unclassified Properties

Base Metal Price, % relative 36
29
Density, g/cm3 8.8
8.2
Embodied Carbon, kg CO2/kg material 4.0
3.6
Embodied Energy, MJ/kg 62
57
Embodied Water, L/kg 350
310

Common Calculations

Stiffness to Weight: Axial, points 7.4
7.8
Stiffness to Weight: Bending, points 19
20
Strength to Weight: Axial, points 14 to 34
13 to 27
Strength to Weight: Bending, points 15 to 26
14 to 23
Thermal Diffusivity, mm2/s 16
14
Thermal Shock Resistance, points 16 to 38
13 to 26

Alloy Composition

Copper (Cu), % 82.1 to 86
57 to 61
Iron (Fe), % 0 to 0.5
0 to 0.25
Lead (Pb), % 0 to 0.020
0 to 0.1
Magnesium (Mg), % 0 to 0.15
0
Manganese (Mn), % 0.050 to 0.3
0 to 0.5
Nickel (Ni), % 8.5 to 9.5
11 to 13.5
Niobium (Nb), % 0 to 0.1
0
Tin (Sn), % 5.5 to 6.5
0
Zinc (Zn), % 0 to 0.5
24.2 to 32
Residuals, % 0
0 to 0.5