As-cast C82500 Copper vs. As-cast C82800 Copper
Both as-cast C82500 copper and as-cast C82800 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 as-cast C82500 copper and the bottom bar is as-cast C82800 copper.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 120 | |
| 120 |
| Elongation at Break, % | 20 | |
| 20 |
| Poisson's Ratio | 0.33 | |
| 0.33 |
| Rockwell B Hardness | 82 | |
| 85 |
| Shear Modulus, GPa | 45 | |
| 46 |
| Tensile Strength: Ultimate (UTS), MPa | 550 | |
| 670 |
| Tensile Strength: Yield (Proof), MPa | 310 | |
| 380 |
Thermal Properties
| Latent Heat of Fusion, J/g | 240 | |
| 240 |
| Maximum Temperature: Mechanical, °C | 280 | |
| 310 |
| Melting Completion (Liquidus), °C | 980 | |
| 930 |
| Melting Onset (Solidus), °C | 860 | |
| 890 |
| Specific Heat Capacity, J/kg-K | 390 | |
| 390 |
| Thermal Conductivity, W/m-K | 130 | |
| 120 |
| Thermal Expansion, µm/m-K | 17 | |
| 17 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 20 | |
| 18 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 21 | |
| 19 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.8 | |
| 8.7 |
| Embodied Carbon, kg CO2/kg material | 10 | |
| 12 |
| Embodied Energy, MJ/kg | 160 | |
| 190 |
| Embodied Water, L/kg | 310 | |
| 310 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 94 | |
| 110 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 400 | |
| 590 |
| Stiffness to Weight: Axial, points | 7.7 | |
| 7.8 |
| Stiffness to Weight: Bending, points | 19 | |
| 19 |
| Strength to Weight: Axial, points | 18 | |
| 21 |
| Strength to Weight: Bending, points | 17 | |
| 20 |
| Thermal Diffusivity, mm2/s | 38 | |
| 36 |
| Thermal Shock Resistance, points | 19 | |
| 23 |
Alloy Composition
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| Aluminum (Al), % | 0 to 0.15 | |
| 0 to 0.15 |
| Beryllium (Be), % | 1.9 to 2.3 | |
| 2.5 to 2.9 |
| Chromium (Cr), % | 0 to 0.1 | |
| 0 to 0.1 |
| Cobalt (Co), % | 0.15 to 0.7 | |
| 0.15 to 0.7 |
| Copper (Cu), % | 95.3 to 97.8 | |
| 94.6 to 97.2 |
| Iron (Fe), % | 0 to 0.25 | |
| 0 to 0.25 |
| Lead (Pb), % | 0 to 0.020 | |
| 0 to 0.020 |
| Nickel (Ni), % | 0 to 0.2 | |
| 0 to 0.2 |
| Silicon (Si), % | 0.2 to 0.35 | |
| 0.2 to 0.35 |
| Tin (Sn), % | 0 to 0.1 | |
| 0 to 0.1 |
| Titanium (Ti), % | 0 to 0.12 | |
| 0 to 0.12 |
| Zinc (Zn), % | 0 to 0.1 | |
| 0 to 0.1 |
| Residuals, % | 0 to 0.5 | |
| 0 to 0.5 |