C90500 Gun Metal vs. C71500 Copper-nickel
Both C90500 gun metal and C71500 copper-nickel are copper alloys. They have 68% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.
For each property being compared, the top bar is C90500 gun metal and the bottom bar is C71500 copper-nickel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 140 |
| Poisson's Ratio | 0.34 | |
| 0.33 |
| Shear Modulus, GPa | 40 | |
| 52 |
| Tensile Strength: Ultimate (UTS), MPa | 320 | |
| 380 to 620 |
Thermal Properties
| Latent Heat of Fusion, J/g | 190 | |
| 230 |
| Maximum Temperature: Mechanical, °C | 170 | |
| 260 |
| Melting Completion (Liquidus), °C | 1000 | |
| 1240 |
| Melting Onset (Solidus), °C | 850 | |
| 1170 |
| Specific Heat Capacity, J/kg-K | 370 | |
| 400 |
| Thermal Conductivity, W/m-K | 75 | |
| 28 |
| Thermal Expansion, µm/m-K | 18 | |
| 16 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 11 | |
| 4.6 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 11 | |
| 4.7 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 35 | |
| 41 |
| Density, g/cm3 | 8.7 | |
| 8.9 |
| Embodied Carbon, kg CO2/kg material | 3.6 | |
| 5.1 |
| Embodied Energy, MJ/kg | 59 | |
| 74 |
| Embodied Water, L/kg | 390 | |
| 280 |
Common Calculations
| Stiffness to Weight: Axial, points | 6.9 | |
| 8.6 |
| Stiffness to Weight: Bending, points | 18 | |
| 19 |
| Strength to Weight: Axial, points | 10 | |
| 12 to 19 |
| Strength to Weight: Bending, points | 12 | |
| 13 to 18 |
| Thermal Diffusivity, mm2/s | 23 | |
| 7.7 |
| Thermal Shock Resistance, points | 12 | |
| 12 to 20 |
Alloy Composition
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| Aluminum (Al), % | 0 to 0.0050 | |
| 0 |
| Antimony (Sb), % | 0 to 0.2 | |
| 0 |
| Copper (Cu), % | 86 to 89 | |
| 63.5 to 70.6 |
| Iron (Fe), % | 0 to 0.2 | |
| 0.4 to 1.0 |
| Lead (Pb), % | 0 to 0.3 | |
| 0 to 0.050 |
| Manganese (Mn), % | 0 | |
| 0 to 1.0 |
| Nickel (Ni), % | 0 to 1.0 | |
| 29 to 33 |
| 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 |
| Zinc (Zn), % | 1.0 to 3.0 | |
| 0 to 1.0 |
| Residuals, % | 0 to 0.3 | |
| 0 to 0.5 |