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C72700 Copper-nickel vs. C77100 Nickel Silver

Both C72700 copper-nickel and C77100 nickel silver are copper alloys. They have 64% 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 C72700 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 44
45
Tensile Strength: Ultimate (UTS), MPa 460 to 1070
600
Tensile Strength: Yield (Proof), MPa 580 to 1060
540

Thermal Properties

Latent Heat of Fusion, J/g 210
180
Maximum Temperature: Mechanical, °C 200
150
Melting Completion (Liquidus), °C 1100
990
Melting Onset (Solidus), °C 930
950
Specific Heat Capacity, J/kg-K 380
390
Thermal Conductivity, W/m-K 54
40
Thermal Expansion, µm/m-K 17
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 11
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 36
27
Density, g/cm3 8.8
8.1
Embodied Carbon, kg CO2/kg material 4.0
3.5
Embodied Energy, MJ/kg 62
56
Embodied Water, L/kg 350
310

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 1420 to 4770
1280
Stiffness to Weight: Axial, points 7.4
7.8
Stiffness to Weight: Bending, points 19
20
Strength to Weight: Axial, points 14 to 34
21
Strength to Weight: Bending, points 15 to 26
20
Thermal Diffusivity, mm2/s 16
13
Thermal Shock Resistance, points 16 to 38
19

Alloy Composition

Copper (Cu), % 82.1 to 86
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), % 0.050 to 0.3
0 to 0.9
Nickel (Ni), % 8.5 to 9.5
9.0 to 12
Niobium (Nb), % 0 to 0.1
0
Tin (Sn), % 5.5 to 6.5
0
Zinc (Zn), % 0 to 0.5
30.6 to 39
Residuals, % 0
0 to 0.5