CR025A Copper vs. C87600 Bronze
Both CR025A copper and C87600 bronze are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have a moderately high 90% of their average alloy composition in common.
For each property being compared, the top bar is CR025A copper and the bottom bar is C87600 bronze.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 120 | |
| 110 |
| Elongation at Break, % | 15 | |
| 18 |
| Poisson's Ratio | 0.34 | |
| 0.33 |
| Shear Modulus, GPa | 43 | |
| 42 |
| Tensile Strength: Ultimate (UTS), MPa | 230 | |
| 470 |
| Tensile Strength: Yield (Proof), MPa | 140 | |
| 230 |
Thermal Properties
| Latent Heat of Fusion, J/g | 210 | |
| 280 |
| Maximum Temperature: Mechanical, °C | 200 | |
| 190 |
| Melting Completion (Liquidus), °C | 1090 | |
| 970 |
| Melting Onset (Solidus), °C | 1040 | |
| 860 |
| Specific Heat Capacity, J/kg-K | 390 | |
| 410 |
| Thermal Conductivity, W/m-K | 370 | |
| 28 |
| Thermal Expansion, µm/m-K | 17 | |
| 17 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 99 | |
| 6.0 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 99 | |
| 6.4 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 31 | |
| 29 |
| Density, g/cm3 | 9.0 | |
| 8.5 |
| Embodied Carbon, kg CO2/kg material | 2.6 | |
| 2.7 |
| Embodied Energy, MJ/kg | 41 | |
| 43 |
| Embodied Water, L/kg | 320 | |
| 300 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 31 | |
| 71 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 83 | |
| 240 |
| Stiffness to Weight: Axial, points | 7.2 | |
| 7.4 |
| Stiffness to Weight: Bending, points | 18 | |
| 19 |
| Strength to Weight: Axial, points | 7.1 | |
| 16 |
| Strength to Weight: Bending, points | 9.3 | |
| 16 |
| Thermal Diffusivity, mm2/s | 110 | |
| 8.1 |
| Thermal Shock Resistance, points | 8.1 | |
| 17 |
Alloy Composition
| Bismuth (Bi), % | 0 to 0.00050 | |
| 0 |
| Copper (Cu), % | 99.9 to 99.96 | |
| 88 to 92.5 |
| Lead (Pb), % | 0 to 0.0050 | |
| 0 to 0.5 |
| Phosphorus (P), % | 0.040 to 0.060 | |
| 0 |
| Silicon (Si), % | 0 | |
| 3.5 to 5.5 |
| Silver (Ag), % | 0 to 0.015 | |
| 0 |
| Zinc (Zn), % | 0 | |
| 4.0 to 7.0 |
| Residuals, % | 0 | |
| 0 to 0.5 |