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CR021A Copper vs. AWS BAg-20

CR021A copper belongs to the copper alloys classification, while AWS BAg-20 belongs to the otherwise unclassified metals. They have a modest 38% of their average alloy composition in common, which, by itself, doesn't mean much. There are 17 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is CR021A copper and the bottom bar is AWS BAg-20.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
93
Poisson's Ratio 0.34
0.32
Shear Modulus, GPa 43
35
Tensile Strength: Ultimate (UTS), MPa 230
160

Thermal Properties

Latent Heat of Fusion, J/g 210
150
Melting Completion (Liquidus), °C 1090
770
Melting Onset (Solidus), °C 1040
680
Specific Heat Capacity, J/kg-K 390
340
Thermal Expansion, µm/m-K 17
21

Otherwise Unclassified Properties

Density, g/cm3 9.0
8.6
Embodied Carbon, kg CO2/kg material 2.6
30
Embodied Energy, MJ/kg 41
480

Common Calculations

Stiffness to Weight: Axial, points 7.2
6.0
Stiffness to Weight: Bending, points 18
17
Strength to Weight: Axial, points 7.1
5.1
Strength to Weight: Bending, points 9.3
7.6
Thermal Shock Resistance, points 8.1
5.9

Alloy Composition

Bismuth (Bi), % 0 to 0.00050
0
Copper (Cu), % 99.95 to 99.998
37 to 39
Lead (Pb), % 0 to 0.0050
0
Phosphorus (P), % 0.0020 to 0.0070
0
Silver (Ag), % 0 to 0.015
29 to 31
Zinc (Zn), % 0
30 to 34
Residuals, % 0
0 to 0.15