CR021A Copper vs. AWS BAg-21
CR021A copper belongs to the copper alloys classification, while AWS BAg-21 belongs to the otherwise unclassified metals. They have a modest 29% of their average alloy composition in common, which, by itself, doesn't mean much. There are 16 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 CR021A copper and the bottom bar is AWS BAg-21.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 120 | |
| 85 |
| Poisson's Ratio | 0.34 | |
| 0.36 |
| Shear Modulus, GPa | 43 | |
| 31 |
| Tensile Strength: Ultimate (UTS), MPa | 230 | |
| 150 |
Thermal Properties
| Latent Heat of Fusion, J/g | 210 | |
| 140 |
| Melting Completion (Liquidus), °C | 1090 | |
| 800 |
| Melting Onset (Solidus), °C | 1040 | |
| 690 |
| Specific Heat Capacity, J/kg-K | 390 | |
| 280 |
| Thermal Expansion, µm/m-K | 17 | |
| 19 |
Otherwise Unclassified Properties
| Density, g/cm3 | 9.0 | |
| 9.8 |
| Embodied Energy, MJ/kg | 41 | |
| 970 |
Common Calculations
| Stiffness to Weight: Axial, points | 7.2 | |
| 4.8 |
| Stiffness to Weight: Bending, points | 18 | |
| 15 |
| Strength to Weight: Axial, points | 7.1 | |
| 4.2 |
| Strength to Weight: Bending, points | 9.3 | |
| 6.4 |
| Thermal Shock Resistance, points | 8.1 | |
| 6.6 |
Alloy Composition
| Bismuth (Bi), % | 0 to 0.00050 | |
| 0 |
| Copper (Cu), % | 99.95 to 99.998 | |
| 27.5 to 29.5 |
| Lead (Pb), % | 0 to 0.0050 | |
| 0 |
| Nickel (Ni), % | 0 | |
| 2.0 to 3.0 |
| Phosphorus (P), % | 0.0020 to 0.0070 | |
| 0 |
| Silver (Ag), % | 0 to 0.015 | |
| 62 to 64 |
| Tin (Sn), % | 0 | |
| 5.0 to 7.0 |
| Residuals, % | 0 | |
| 0 to 0.15 |