C87900 Brass vs. C92700 Bronze
Both C87900 brass and C92700 bronze are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 67% of their average alloy composition in common.
For each property being compared, the top bar is C87900 brass and the bottom bar is C92700 bronze.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 110 |
| Elongation at Break, % | 25 | |
| 9.1 |
| Poisson's Ratio | 0.31 | |
| 0.34 |
| Rockwell B Hardness | 70 | |
| 77 |
| Shear Modulus, GPa | 41 | |
| 40 |
| Tensile Strength: Ultimate (UTS), MPa | 480 | |
| 290 |
| Tensile Strength: Yield (Proof), MPa | 240 | |
| 150 |
Thermal Properties
| Latent Heat of Fusion, J/g | 190 | |
| 190 |
| Maximum Temperature: Mechanical, °C | 130 | |
| 170 |
| Melting Completion (Liquidus), °C | 930 | |
| 980 |
| Melting Onset (Solidus), °C | 900 | |
| 840 |
| Specific Heat Capacity, J/kg-K | 390 | |
| 370 |
| Thermal Conductivity, W/m-K | 120 | |
| 47 |
| Thermal Expansion, µm/m-K | 20 | |
| 18 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 15 | |
| 11 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 17 | |
| 11 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 24 | |
| 35 |
| Density, g/cm3 | 8.1 | |
| 8.7 |
| Embodied Carbon, kg CO2/kg material | 2.7 | |
| 3.6 |
| Embodied Energy, MJ/kg | 46 | |
| 58 |
| Embodied Water, L/kg | 320 | |
| 390 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 100 | |
| 22 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 270 | |
| 110 |
| Stiffness to Weight: Axial, points | 7.3 | |
| 6.8 |
| Stiffness to Weight: Bending, points | 20 | |
| 18 |
| Strength to Weight: Axial, points | 17 | |
| 9.1 |
| Strength to Weight: Bending, points | 17 | |
| 11 |
| Thermal Diffusivity, mm2/s | 37 | |
| 15 |
| Thermal Shock Resistance, points | 16 | |
| 11 |
Alloy Composition
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| Aluminum (Al), % | 0 to 0.15 | |
| 0 to 0.0050 |
| Antimony (Sb), % | 0 to 0.050 | |
| 0 to 0.25 |
| Arsenic (As), % | 0 to 0.050 | |
| 0 |
| Copper (Cu), % | 63 to 69.2 | |
| 86 to 89 |
| Iron (Fe), % | 0 to 0.4 | |
| 0 to 0.2 |
| Lead (Pb), % | 0 to 0.25 | |
| 1.0 to 2.5 |
| Manganese (Mn), % | 0 to 0.15 | |
| 0 |
| Nickel (Ni), % | 0 to 0.5 | |
| 0 to 1.0 |
| Phosphorus (P), % | 0 to 0.010 | |
| 0 to 1.5 |
| Silicon (Si), % | 0.8 to 1.2 | |
| 0 to 0.0050 |
| Sulfur (S), % | 0 to 0.050 | |
| 0 to 0.050 |
| Tin (Sn), % | 0 to 0.25 | |
| 9.0 to 11 |
| Zinc (Zn), % | 30 to 36 | |
| 0 to 0.7 |
| Residuals, % | 0 | |
| 0 to 0.7 |