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CR021A Copper vs. AWS BVAg-31

CR021A copper belongs to the copper alloys classification, while AWS BVAg-31 belongs to the otherwise unclassified metals. They have a modest 32% of their average alloy composition in common, which, by itself, doesn't mean much. There are 15 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is CR021A copper and the bottom bar is AWS BVAg-31.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
90
Poisson's Ratio 0.34
0.36
Shear Modulus, GPa 43
33
Tensile Strength: Ultimate (UTS), MPa 230
180

Thermal Properties

Latent Heat of Fusion, J/g 210
150
Melting Completion (Liquidus), °C 1090
850
Melting Onset (Solidus), °C 1040
820
Specific Heat Capacity, J/kg-K 390
280
Thermal Expansion, µm/m-K 17
18

Otherwise Unclassified Properties

Density, g/cm3 9.0
10

Common Calculations

Stiffness to Weight: Axial, points 7.2
4.9
Stiffness to Weight: Bending, points 18
15
Strength to Weight: Axial, points 7.1
4.9
Strength to Weight: Bending, points 9.3
7.0
Thermal Shock Resistance, points 8.1
7.8

Alloy Composition

Bismuth (Bi), % 0 to 0.00050
0
Cadmium (Cd), % 0
0 to 0.0010
Carbon (C), % 0
0 to 0.0050
Copper (Cu), % 99.95 to 99.998
31 to 33
Lead (Pb), % 0 to 0.0050
0 to 0.0020
Palladium (Pd), % 0
8.0 to 12
Phosphorus (P), % 0.0020 to 0.0070
0 to 0.0020
Silver (Ag), % 0 to 0.015
57 to 59
Zinc (Zn), % 0
0 to 0.0010