C90500 Gun Metal vs. C94700 Bronze
Both C90500 gun metal and C94700 bronze are copper alloys. They have a very high 95% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.
For each property being compared, the top bar is C90500 gun metal and the bottom bar is C94700 bronze.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 110 |
| Elongation at Break, % | 20 | |
| 7.9 to 32 |
| Poisson's Ratio | 0.34 | |
| 0.34 |
| Shear Modulus, GPa | 40 | |
| 43 |
| Tensile Strength: Ultimate (UTS), MPa | 320 | |
| 350 to 590 |
| Tensile Strength: Yield (Proof), MPa | 160 | |
| 160 to 400 |
Thermal Properties
| Latent Heat of Fusion, J/g | 190 | |
| 200 |
| Maximum Temperature: Mechanical, °C | 170 | |
| 190 |
| Melting Completion (Liquidus), °C | 1000 | |
| 1030 |
| Melting Onset (Solidus), °C | 850 | |
| 900 |
| Specific Heat Capacity, J/kg-K | 370 | |
| 380 |
| Thermal Conductivity, W/m-K | 75 | |
| 54 |
| Thermal Expansion, µm/m-K | 18 | |
| 17 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 11 | |
| 12 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 11 | |
| 12 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 35 | |
| 34 |
| Density, g/cm3 | 8.7 | |
| 8.8 |
| Embodied Carbon, kg CO2/kg material | 3.6 | |
| 3.5 |
| Embodied Energy, MJ/kg | 59 | |
| 56 |
| Embodied Water, L/kg | 390 | |
| 350 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 54 | |
| 41 to 89 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 110 | |
| 110 to 700 |
| Stiffness to Weight: Axial, points | 6.9 | |
| 7.3 |
| Stiffness to Weight: Bending, points | 18 | |
| 18 |
| Strength to Weight: Axial, points | 10 | |
| 11 to 19 |
| Strength to Weight: Bending, points | 12 | |
| 13 to 18 |
| Thermal Diffusivity, mm2/s | 23 | |
| 16 |
| Thermal Shock Resistance, points | 12 | |
| 12 to 21 |
Alloy Composition
| Aluminum (Al), % | 0 to 0.0050 | |
| 0 to 0.0050 |
| Antimony (Sb), % | 0 to 0.2 | |
| 0 to 0.15 |
| Copper (Cu), % | 86 to 89 | |
| 85 to 90 |
| Iron (Fe), % | 0 to 0.2 | |
| 0 to 0.25 |
| Lead (Pb), % | 0 to 0.3 | |
| 0 to 0.1 |
| Manganese (Mn), % | 0 | |
| 0 to 0.2 |
| Nickel (Ni), % | 0 to 1.0 | |
| 4.5 to 6.0 |
| Phosphorus (P), % | 0 to 1.5 | |
| 0 to 0.050 |
| Silicon (Si), % | 0 to 0.0050 | |
| 0 to 0.0050 |
| Sulfur (S), % | 0 to 0.050 | |
| 0 to 0.050 |
| Tin (Sn), % | 9.0 to 11 | |
| 4.5 to 6.0 |
| Zinc (Zn), % | 1.0 to 3.0 | |
| 1.0 to 2.5 |
| Residuals, % | 0 | |
| 0 to 1.3 |