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ASTM B631 Class B vs. C70700 Copper-nickel

ASTM B631 class B belongs to the otherwise unclassified metals classification, while C70700 copper-nickel belongs to the copper alloys. 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 ASTM B631 class B and the bottom bar is C70700 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
120
Poisson's Ratio 0.31
0.34
Shear Modulus, GPa 78 to 79
46

Thermal Properties

Latent Heat of Fusion, J/g 150
220
Melting Completion (Liquidus), °C 2460 to 2480
1120
Specific Heat Capacity, J/kg-K 170
390
Thermal Conductivity, W/m-K 450
59
Thermal Expansion, µm/m-K 12
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 50 to 53
11
Electrical Conductivity: Equal Weight (Specific), % IACS 32 to 34
12

Otherwise Unclassified Properties

Density, g/cm3 14
8.9
Embodied Carbon, kg CO2/kg material 49
3.4
Embodied Energy, MJ/kg 760
52

Common Calculations

Stiffness to Weight: Axial, points 8.1
7.6
Stiffness to Weight: Bending, points 14
19
Thermal Diffusivity, mm2/s 190
17