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C71640 Copper-nickel vs. C72500 Copper-nickel

Both C71640 copper-nickel and C72500 copper-nickel are copper alloys. They have 75% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is C71640 copper-nickel and the bottom bar is C72500 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 140
120
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 52
45
Tensile Strength: Ultimate (UTS), MPa 490 to 630
420 to 780

Thermal Properties

Latent Heat of Fusion, J/g 240
210
Maximum Temperature: Mechanical, °C 260
210
Melting Completion (Liquidus), °C 1180
1130
Melting Onset (Solidus), °C 1120
1060
Specific Heat Capacity, J/kg-K 410
390
Thermal Conductivity, W/m-K 29
54
Thermal Expansion, µm/m-K 15
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
11
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
11

Otherwise Unclassified Properties

Base Metal Price, % relative 40
35
Density, g/cm3 8.9
8.9
Embodied Carbon, kg CO2/kg material 5.0
3.6
Embodied Energy, MJ/kg 73
55
Embodied Water, L/kg 280
320

Common Calculations

Stiffness to Weight: Axial, points 8.7
7.6
Stiffness to Weight: Bending, points 20
19
Strength to Weight: Axial, points 15 to 20
13 to 24
Strength to Weight: Bending, points 16 to 18
14 to 21
Thermal Diffusivity, mm2/s 8.2
16
Thermal Shock Resistance, points 16 to 21
14 to 27

Alloy Composition


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Copper (Cu), % 61.7 to 67.8
85.2 to 89.7
Iron (Fe), % 1.7 to 2.3
0 to 0.6
Lead (Pb), % 0 to 0.050
0 to 0.050
Manganese (Mn), % 1.5 to 2.5
0 to 0.2
Nickel (Ni), % 29 to 32
8.5 to 10.5
Tin (Sn), % 0
1.8 to 2.8
Zinc (Zn), % 0 to 1.0
0 to 0.5
Residuals, % 0 to 0.5
0 to 0.2