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C72900 Copper-nickel vs. C77100 Nickel Silver

Both C72900 copper-nickel and C77100 nickel silver are copper alloys. They have 65% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is C72900 copper-nickel and the bottom bar is C77100 nickel silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
110
Poisson's Ratio 0.34
0.31
Shear Modulus, GPa 45
45
Tensile Strength: Ultimate (UTS), MPa 870 to 1080
600
Tensile Strength: Yield (Proof), MPa 700 to 920
540

Thermal Properties

Latent Heat of Fusion, J/g 210
180
Maximum Temperature: Mechanical, °C 210
150
Melting Completion (Liquidus), °C 1120
990
Melting Onset (Solidus), °C 950
950
Specific Heat Capacity, J/kg-K 380
390
Thermal Conductivity, W/m-K 29
40
Thermal Expansion, µm/m-K 17
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.8
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 8.0
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 39
27
Density, g/cm3 8.8
8.1
Embodied Carbon, kg CO2/kg material 4.6
3.5
Embodied Energy, MJ/kg 72
56
Embodied Water, L/kg 360
310

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 2030 to 3490
1280
Stiffness to Weight: Axial, points 7.6
7.8
Stiffness to Weight: Bending, points 19
20
Strength to Weight: Axial, points 27 to 34
21
Strength to Weight: Bending, points 23 to 27
20
Thermal Diffusivity, mm2/s 8.6
13
Thermal Shock Resistance, points 31 to 38
19

Alloy Composition

Copper (Cu), % 74.1 to 78
52 to 56
Iron (Fe), % 0 to 0.5
0
Lead (Pb), % 0 to 0.020
0 to 0.030
Magnesium (Mg), % 0 to 0.15
0
Manganese (Mn), % 0 to 0.3
0 to 0.9
Nickel (Ni), % 14.5 to 15.5
9.0 to 12
Niobium (Nb), % 0 to 0.1
0
Tin (Sn), % 7.5 to 8.5
0
Zinc (Zn), % 0 to 0.5
30.6 to 39
Residuals, % 0
0 to 0.5