C90500 Gun Metal vs. C61900 Bronze
Both C90500 gun metal and C61900 bronze are copper alloys. They have 87% of their average alloy composition in common. There are 28 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 C90500 gun metal and the bottom bar is C61900 bronze.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 110 |
| Elongation at Break, % | 20 | |
| 21 to 32 |
| Poisson's Ratio | 0.34 | |
| 0.34 |
| Shear Modulus, GPa | 40 | |
| 43 |
| Tensile Strength: Ultimate (UTS), MPa | 320 | |
| 570 to 650 |
| Tensile Strength: Yield (Proof), MPa | 160 | |
| 230 to 310 |
Thermal Properties
| Latent Heat of Fusion, J/g | 190 | |
| 230 |
| Maximum Temperature: Mechanical, °C | 170 | |
| 220 |
| Melting Completion (Liquidus), °C | 1000 | |
| 1050 |
| Melting Onset (Solidus), °C | 850 | |
| 1040 |
| Specific Heat Capacity, J/kg-K | 370 | |
| 440 |
| Thermal Conductivity, W/m-K | 75 | |
| 79 |
| Thermal Expansion, µm/m-K | 18 | |
| 18 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 11 | |
| 11 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 11 | |
| 11 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 35 | |
| 28 |
| Density, g/cm3 | 8.7 | |
| 8.3 |
| Embodied Carbon, kg CO2/kg material | 3.6 | |
| 3.1 |
| Embodied Energy, MJ/kg | 59 | |
| 51 |
| Embodied Water, L/kg | 390 | |
| 380 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 54 | |
| 110 to 150 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 110 | |
| 230 to 430 |
| Stiffness to Weight: Axial, points | 6.9 | |
| 7.6 |
| Stiffness to Weight: Bending, points | 18 | |
| 19 |
| Strength to Weight: Axial, points | 10 | |
| 19 to 22 |
| Strength to Weight: Bending, points | 12 | |
| 18 to 20 |
| Thermal Diffusivity, mm2/s | 23 | |
| 22 |
| Thermal Shock Resistance, points | 12 | |
| 20 to 23 |
Alloy Composition
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| Aluminum (Al), % | 0 to 0.0050 | |
| 8.5 to 10 |
| Antimony (Sb), % | 0 to 0.2 | |
| 0 |
| Copper (Cu), % | 86 to 89 | |
| 83.6 to 88.5 |
| Iron (Fe), % | 0 to 0.2 | |
| 3.0 to 4.5 |
| Lead (Pb), % | 0 to 0.3 | |
| 0 to 0.020 |
| Nickel (Ni), % | 0 to 1.0 | |
| 0 |
| Phosphorus (P), % | 0 to 1.5 | |
| 0 |
| Silicon (Si), % | 0 to 0.0050 | |
| 0 |
| Sulfur (S), % | 0 to 0.050 | |
| 0 |
| Tin (Sn), % | 9.0 to 11 | |
| 0 to 0.6 |
| Zinc (Zn), % | 1.0 to 3.0 | |
| 0 to 0.8 |
| Residuals, % | 0 to 0.3 | |
| 0 to 0.5 |