CR020A Copper vs. CR015A Copper
Both CR020A copper and CR015A copper are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. Their average alloy composition is basically identical.
For each property being compared, the top bar is CR020A copper and the bottom bar is CR015A copper.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 120 | |
| 120 |
| Elongation at Break, % | 15 | |
| 15 |
| Poisson's Ratio | 0.34 | |
| 0.34 |
| Shear Modulus, GPa | 43 | |
| 43 |
| Tensile Strength: Ultimate (UTS), MPa | 220 | |
| 220 |
| Tensile Strength: Yield (Proof), MPa | 130 | |
| 130 |
Thermal Properties
| Latent Heat of Fusion, J/g | 210 | |
| 210 |
| Maximum Temperature: Mechanical, °C | 200 | |
| 200 |
| Melting Completion (Liquidus), °C | 1090 | |
| 1090 |
| Melting Onset (Solidus), °C | 1040 | |
| 1040 |
| Specific Heat Capacity, J/kg-K | 390 | |
| 390 |
| Thermal Conductivity, W/m-K | 380 | |
| 390 |
| Thermal Expansion, µm/m-K | 17 | |
| 17 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 100 | |
| 98 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 100 | |
| 99 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 31 | |
| 33 |
| Density, g/cm3 | 9.0 | |
| 9.0 |
| Embodied Carbon, kg CO2/kg material | 2.6 | |
| 2.7 |
| Embodied Energy, MJ/kg | 41 | |
| 42 |
| Embodied Water, L/kg | 320 | |
| 360 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 29 | |
| 29 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 76 | |
| 76 |
| Stiffness to Weight: Axial, points | 7.2 | |
| 7.2 |
| Stiffness to Weight: Bending, points | 18 | |
| 18 |
| Strength to Weight: Axial, points | 6.8 | |
| 6.8 |
| Strength to Weight: Bending, points | 9.0 | |
| 9.0 |
| Thermal Diffusivity, mm2/s | 110 | |
| 110 |
| Thermal Shock Resistance, points | 7.8 | |
| 7.8 |
Alloy Composition
| Bismuth (Bi), % | 0 to 0.00050 | |
| 0 to 0.00050 |
| Copper (Cu), % | 99.95 to 99.999 | |
| 99.883 to 99.939 |
| Lead (Pb), % | 0 to 0.0050 | |
| 0 |
| Phosphorus (P), % | 0.0010 to 0.0060 | |
| 0.0010 to 0.0070 |
| Silver (Ag), % | 0 to 0.015 | |
| 0.060 to 0.080 |