C87200 Bronze vs. C91700 Bronze
Both C87200 bronze and C91700 bronze are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 87% of their average alloy composition in common.
For each property being compared, the top bar is C87200 bronze and the bottom bar is C91700 bronze.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 85 | |
| 90 |
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 110 |
| Elongation at Break, % | 30 | |
| 13 |
| Poisson's Ratio | 0.34 | |
| 0.34 |
| Shear Modulus, GPa | 43 | |
| 41 |
| Tensile Strength: Ultimate (UTS), MPa | 380 | |
| 330 |
| Tensile Strength: Yield (Proof), MPa | 170 | |
| 170 |
Thermal Properties
| Latent Heat of Fusion, J/g | 260 | |
| 190 |
| Maximum Temperature: Mechanical, °C | 200 | |
| 170 |
| Melting Completion (Liquidus), °C | 970 | |
| 1020 |
| Melting Onset (Solidus), °C | 860 | |
| 850 |
| Specific Heat Capacity, J/kg-K | 410 | |
| 370 |
| Thermal Conductivity, W/m-K | 28 | |
| 71 |
| Thermal Expansion, µm/m-K | 17 | |
| 18 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 6.0 | |
| 10 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 6.3 | |
| 10 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 29 | |
| 36 |
| Density, g/cm3 | 8.6 | |
| 8.7 |
| Embodied Carbon, kg CO2/kg material | 2.7 | |
| 3.9 |
| Embodied Energy, MJ/kg | 44 | |
| 63 |
| Embodied Water, L/kg | 310 | |
| 400 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 93 | |
| 35 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 130 | |
| 140 |
| Stiffness to Weight: Axial, points | 7.4 | |
| 6.9 |
| Stiffness to Weight: Bending, points | 19 | |
| 18 |
| Strength to Weight: Axial, points | 12 | |
| 11 |
| Strength to Weight: Bending, points | 14 | |
| 12 |
| Thermal Diffusivity, mm2/s | 8.0 | |
| 22 |
| Thermal Shock Resistance, points | 14 | |
| 12 |
Alloy Composition
| Aluminum (Al), % | 0 to 1.5 | |
| 0 to 0.0050 |
| Antimony (Sb), % | 0 | |
| 0 to 0.2 |
| Copper (Cu), % | 89 to 99 | |
| 84.2 to 87.5 |
| Iron (Fe), % | 0 to 2.5 | |
| 0 to 0.2 |
| Lead (Pb), % | 0 to 0.5 | |
| 0 to 0.25 |
| Manganese (Mn), % | 0 to 1.5 | |
| 0 |
| Nickel (Ni), % | 0 | |
| 1.2 to 2.0 |
| Phosphorus (P), % | 0 to 0.5 | |
| 0 to 0.3 |
| Silicon (Si), % | 1.0 to 5.0 | |
| 0 to 0.0050 |
| Sulfur (S), % | 0 | |
| 0 to 0.050 |
| Tin (Sn), % | 0 to 1.0 | |
| 11.3 to 12.5 |
| Zinc (Zn), % | 0 to 5.0 | |
| 0 to 0.25 |