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C72150 Copper-nickel vs. C70700 Copper-nickel

Both C72150 copper-nickel and C70700 copper-nickel are copper alloys. Both are furnished in the annealed condition. They have 65% of their average alloy composition in common.

For each property being compared, the top bar is C72150 copper-nickel and the bottom bar is C70700 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 99
73
Elastic (Young's, Tensile) Modulus, GPa 150
120
Elongation at Break, % 29
39
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 55
46
Shear Strength, MPa 320
220
Tensile Strength: Ultimate (UTS), MPa 490
320
Tensile Strength: Yield (Proof), MPa 210
110

Thermal Properties

Latent Heat of Fusion, J/g 250
220
Maximum Temperature: Mechanical, °C 600
220
Melting Completion (Liquidus), °C 1210
1120
Melting Onset (Solidus), °C 1250
1060
Specific Heat Capacity, J/kg-K 410
390
Thermal Conductivity, W/m-K 22
59
Thermal Expansion, µm/m-K 14
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.5
11
Electrical Conductivity: Equal Weight (Specific), % IACS 3.6
12

Otherwise Unclassified Properties

Base Metal Price, % relative 45
34
Density, g/cm3 8.9
8.9
Embodied Carbon, kg CO2/kg material 6.1
3.4
Embodied Energy, MJ/kg 88
52
Embodied Water, L/kg 270
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
100
Resilience: Unit (Modulus of Resilience), kJ/m3 150
51
Stiffness to Weight: Axial, points 9.1
7.6
Stiffness to Weight: Bending, points 20
19
Strength to Weight: Axial, points 15
10
Strength to Weight: Bending, points 15
12
Thermal Diffusivity, mm2/s 6.0
17
Thermal Shock Resistance, points 18
12

Alloy Composition


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Carbon (C), % 0 to 0.1
0
Copper (Cu), % 52.5 to 57
88.5 to 90.5
Iron (Fe), % 0 to 0.1
0 to 0.050
Lead (Pb), % 0 to 0.050
0
Manganese (Mn), % 0 to 0.050
0 to 0.5
Nickel (Ni), % 43 to 46
9.5 to 10.5
Silicon (Si), % 0 to 0.5
0
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.5
0 to 0.5