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C71640 Copper-nickel vs. C70700 Copper-nickel

Both C71640 copper-nickel and C70700 copper-nickel are copper alloys. They have 75% of their average alloy composition in common. There are 26 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 C70700 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
46
Tensile Strength: Ultimate (UTS), MPa 490 to 630
320
Tensile Strength: Yield (Proof), MPa 190 to 460
110

Thermal Properties

Latent Heat of Fusion, J/g 240
220
Maximum Temperature: Mechanical, °C 260
220
Melting Completion (Liquidus), °C 1180
1120
Melting Onset (Solidus), °C 1120
1060
Specific Heat Capacity, J/kg-K 410
390
Thermal Conductivity, W/m-K 29
59
Thermal Expansion, µm/m-K 15
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
11
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
12

Otherwise Unclassified Properties

Base Metal Price, % relative 40
34
Density, g/cm3 8.9
8.9
Embodied Carbon, kg CO2/kg material 5.0
3.4
Embodied Energy, MJ/kg 73
52
Embodied Water, L/kg 280
300

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 750
51
Stiffness to Weight: Axial, points 8.7
7.6
Stiffness to Weight: Bending, points 20
19
Strength to Weight: Axial, points 15 to 20
10
Strength to Weight: Bending, points 16 to 18
12
Thermal Diffusivity, mm2/s 8.2
17
Thermal Shock Resistance, points 16 to 21
12

Alloy Composition


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Copper (Cu), % 61.7 to 67.8
88.5 to 90.5
Iron (Fe), % 1.7 to 2.3
0 to 0.050
Lead (Pb), % 0 to 0.050
0
Manganese (Mn), % 1.5 to 2.5
0 to 0.5
Nickel (Ni), % 29 to 32
9.5 to 10.5
Zinc (Zn), % 0 to 1.0
0
Residuals, % 0 to 0.5
0 to 0.5