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C70700 Copper-nickel vs. ASTM B631 Class A

C70700 copper-nickel belongs to the copper alloys classification, while ASTM B631 class A belongs to the otherwise unclassified metals. There are 16 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.

For each property being compared, the top bar is C70700 copper-nickel and the bottom bar is ASTM B631 class A.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
220
Poisson's Ratio 0.34
0.3
Shear Modulus, GPa 46
85 to 86

Thermal Properties

Latent Heat of Fusion, J/g 220
160
Melting Completion (Liquidus), °C 1120
2680 to 2690
Specific Heat Capacity, J/kg-K 390
160
Thermal Conductivity, W/m-K 59
420
Thermal Expansion, µm/m-K 16
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
40 to 47
Electrical Conductivity: Equal Weight (Specific), % IACS 12
25 to 29

Otherwise Unclassified Properties

Density, g/cm3 8.9
15
Embodied Carbon, kg CO2/kg material 3.4
43
Embodied Energy, MJ/kg 52
670

Common Calculations

Stiffness to Weight: Axial, points 7.6
8.5
Stiffness to Weight: Bending, points 19
14
Thermal Diffusivity, mm2/s 17
180