C90500 Gun Metal vs. C93700 Bronze
Both C90500 gun metal and C93700 bronze are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have a moderately high 92% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.
For each property being compared, the top bar is C90500 gun metal and the bottom bar is C93700 bronze.
Metric UnitsUS Customary Units
Mechanical Properties
| Compressive (Crushing) Strength, MPa | 280 | |
| 210 |
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 99 |
| Elongation at Break, % | 20 | |
| 20 |
| Fatigue Strength, MPa | 90 | |
| 90 |
| Poisson's Ratio | 0.34 | |
| 0.35 |
| Shear Modulus, GPa | 40 | |
| 37 |
| Tensile Strength: Ultimate (UTS), MPa | 320 | |
| 240 |
| Tensile Strength: Yield (Proof), MPa | 160 | |
| 130 |
Thermal Properties
| Latent Heat of Fusion, J/g | 190 | |
| 170 |
| Maximum Temperature: Mechanical, °C | 170 | |
| 140 |
| Melting Completion (Liquidus), °C | 1000 | |
| 930 |
| Melting Onset (Solidus), °C | 850 | |
| 760 |
| Solidification (Pattern Maker's) Shrinkage, % | 1.6 | |
| 1.1 |
| Specific Heat Capacity, J/kg-K | 370 | |
| 350 |
| Thermal Conductivity, W/m-K | 75 | |
| 47 |
| Thermal Expansion, µm/m-K | 18 | |
| 19 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 11 | |
| 10 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 11 | |
| 10 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 35 | |
| 33 |
| Density, g/cm3 | 8.7 | |
| 8.9 |
| Embodied Carbon, kg CO2/kg material | 3.6 | |
| 3.5 |
| Embodied Energy, MJ/kg | 59 | |
| 57 |
| Embodied Water, L/kg | 390 | |
| 390 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 54 | |
| 40 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 110 | |
| 79 |
| Stiffness to Weight: Axial, points | 6.9 | |
| 6.2 |
| Stiffness to Weight: Bending, points | 18 | |
| 17 |
| Strength to Weight: Axial, points | 10 | |
| 7.5 |
| Strength to Weight: Bending, points | 12 | |
| 9.6 |
| Thermal Diffusivity, mm2/s | 23 | |
| 15 |
| Thermal Shock Resistance, points | 12 | |
| 9.4 |
Alloy Composition
| Aluminum (Al), % | 0 to 0.0050 | |
| 0 to 0.0050 |
| Antimony (Sb), % | 0 to 0.2 | |
| 0 to 0.5 |
| Copper (Cu), % | 86 to 89 | |
| 78 to 82 |
| Iron (Fe), % | 0 to 0.2 | |
| 0 to 0.15 |
| Lead (Pb), % | 0 to 0.3 | |
| 8.0 to 11 |
| Nickel (Ni), % | 0 to 1.0 | |
| 0 to 1.0 |
| Phosphorus (P), % | 0 to 1.5 | |
| 0 to 1.5 |
| Silicon (Si), % | 0 to 0.0050 | |
| 0 to 0.0050 |
| Sulfur (S), % | 0 to 0.050 | |
| 0 to 0.080 |
| Tin (Sn), % | 9.0 to 11 | |
| 9.0 to 11 |
| Zinc (Zn), % | 1.0 to 3.0 | |
| 0 to 0.8 |
| Residuals, % | 0 | |
| 0 to 1.0 |