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ASTM B631 Class C vs. C12900 Copper

ASTM B631 class C belongs to the otherwise unclassified metals classification, while C12900 copper 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 C and the bottom bar is C12900 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180 to 190
120
Poisson's Ratio 0.32
0.34
Shear Modulus, GPa 66 to 71
43

Thermal Properties

Latent Heat of Fusion, J/g 140 to 150
210
Melting Completion (Liquidus), °C 2090 to 2230
1080
Specific Heat Capacity, J/kg-K 180
390
Thermal Conductivity, W/m-K 450 to 490
380
Thermal Expansion, µm/m-K 14
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 55 to 63
98
Electrical Conductivity: Equal Weight (Specific), % IACS 36 to 43
98

Otherwise Unclassified Properties

Density, g/cm3 13 to 14
9.0
Embodied Carbon, kg CO2/kg material 55 to 59
2.6
Embodied Energy, MJ/kg 860 to 920
41

Common Calculations

Stiffness to Weight: Axial, points 7.4 to 7.6
7.2
Stiffness to Weight: Bending, points 14
18
Thermal Diffusivity, mm2/s 180 to 200
110