C82500 Copper vs. C90500 Gun Metal
Both C82500 copper and C90500 gun metal are copper alloys. They have 88% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.
For each property being compared, the top bar is C82500 copper and the bottom bar is C90500 gun metal.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 120 | |
| 110 |
| Elongation at Break, % | 1.0 to 20 | |
| 20 |
| Poisson's Ratio | 0.33 | |
| 0.34 |
| Shear Modulus, GPa | 45 | |
| 40 |
| Tensile Strength: Ultimate (UTS), MPa | 550 to 1100 | |
| 320 |
| Tensile Strength: Yield (Proof), MPa | 310 to 980 | |
| 160 |
Thermal Properties
| Latent Heat of Fusion, J/g | 240 | |
| 190 |
| Maximum Temperature: Mechanical, °C | 280 | |
| 170 |
| Melting Completion (Liquidus), °C | 980 | |
| 1000 |
| Melting Onset (Solidus), °C | 860 | |
| 850 |
| Specific Heat Capacity, J/kg-K | 390 | |
| 370 |
| Thermal Conductivity, W/m-K | 130 | |
| 75 |
| Thermal Expansion, µm/m-K | 17 | |
| 18 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 20 | |
| 11 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 21 | |
| 11 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.8 | |
| 8.7 |
| Embodied Carbon, kg CO2/kg material | 10 | |
| 3.6 |
| Embodied Energy, MJ/kg | 160 | |
| 59 |
| Embodied Water, L/kg | 310 | |
| 390 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 11 to 94 | |
| 54 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 400 to 4000 | |
| 110 |
| Stiffness to Weight: Axial, points | 7.7 | |
| 6.9 |
| Stiffness to Weight: Bending, points | 19 | |
| 18 |
| Strength to Weight: Axial, points | 18 to 35 | |
| 10 |
| Strength to Weight: Bending, points | 17 to 27 | |
| 12 |
| Thermal Diffusivity, mm2/s | 38 | |
| 23 |
| Thermal Shock Resistance, points | 19 to 38 | |
| 12 |
Alloy Composition
| Aluminum (Al), % | 0 to 0.15 | |
| 0 to 0.0050 |
| Antimony (Sb), % | 0 | |
| 0 to 0.2 |
| Beryllium (Be), % | 1.9 to 2.3 | |
| 0 |
| Chromium (Cr), % | 0 to 0.1 | |
| 0 |
| Cobalt (Co), % | 0.15 to 0.7 | |
| 0 |
| Copper (Cu), % | 95.3 to 97.8 | |
| 86 to 89 |
| Iron (Fe), % | 0 to 0.25 | |
| 0 to 0.2 |
| Lead (Pb), % | 0 to 0.020 | |
| 0 to 0.3 |
| Nickel (Ni), % | 0 to 0.2 | |
| 0 to 1.0 |
| Phosphorus (P), % | 0 | |
| 0 to 1.5 |
| Silicon (Si), % | 0.2 to 0.35 | |
| 0 to 0.0050 |
| Sulfur (S), % | 0 | |
| 0 to 0.050 |
| Tin (Sn), % | 0 to 0.1 | |
| 9.0 to 11 |
| Titanium (Ti), % | 0 to 0.12 | |
| 0 |
| Zinc (Zn), % | 0 to 0.1 | |
| 1.0 to 3.0 |
| Residuals, % | 0 | |
| 0 to 0.3 |