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C71640 Copper-nickel vs. C75700 Nickel Silver

Both C71640 copper-nickel and C75700 nickel silver are copper alloys. They have 78% 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 C71640 copper-nickel and the bottom bar is C75700 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
45
Tensile Strength: Ultimate (UTS), MPa 490 to 630
590 to 610
Tensile Strength: Yield (Proof), MPa 190 to 460
470 to 580

Thermal Properties

Latent Heat of Fusion, J/g 240
200
Maximum Temperature: Mechanical, °C 260
180
Melting Completion (Liquidus), °C 1180
1040
Melting Onset (Solidus), °C 1120
990
Specific Heat Capacity, J/kg-K 410
390
Thermal Conductivity, W/m-K 29
40
Thermal Expansion, µm/m-K 15
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
8.0
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
8.6

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

Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 750
930 to 1410
Stiffness to Weight: Axial, points 8.7
7.8
Stiffness to Weight: Bending, points 20
19
Strength to Weight: Axial, points 15 to 20
19 to 20
Strength to Weight: Bending, points 16 to 18
19
Thermal Diffusivity, mm2/s 8.2
12
Thermal Shock Resistance, points 16 to 21
22 to 23

Alloy Composition

Copper (Cu), % 61.7 to 67.8
63.5 to 66.5
Iron (Fe), % 1.7 to 2.3
0 to 0.25
Lead (Pb), % 0 to 0.050
0 to 0.050
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
19.2 to 25.5
Residuals, % 0 to 0.5
0 to 0.5