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ASTM B631 Class B vs. C71520 Copper-nickel

ASTM B631 class B belongs to the otherwise unclassified metals classification, while C71520 copper-nickel belongs to the copper alloys. There are 17 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is ASTM B631 class B and the bottom bar is C71520 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
140
Poisson's Ratio 0.31
0.33
Rockwell B Hardness 53 to 85
35 to 86
Shear Modulus, GPa 78 to 79
51

Thermal Properties

Latent Heat of Fusion, J/g 150
230
Melting Completion (Liquidus), °C 2460 to 2480
1170
Specific Heat Capacity, J/kg-K 170
400
Thermal Conductivity, W/m-K 450
32
Thermal Expansion, µm/m-K 12
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 50 to 53
5.7
Electrical Conductivity: Equal Weight (Specific), % IACS 32 to 34
5.8

Otherwise Unclassified Properties

Density, g/cm3 14
8.9
Embodied Carbon, kg CO2/kg material 49
5.0
Embodied Energy, MJ/kg 760
73

Common Calculations

Stiffness to Weight: Axial, points 8.1
8.6
Stiffness to Weight: Bending, points 14
19
Thermal Diffusivity, mm2/s 190
8.9