C99700 Brass vs. C94900 Bronze
Both C99700 brass and C94900 bronze are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 72% of their average alloy composition in common.
For each property being compared, the top bar is C99700 brass and the bottom bar is C94900 bronze.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 120 | |
| 110 |
| Elongation at Break, % | 25 | |
| 17 |
| Poisson's Ratio | 0.32 | |
| 0.34 |
| Shear Modulus, GPa | 46 | |
| 41 |
| Tensile Strength: Ultimate (UTS), MPa | 380 | |
| 300 |
| Tensile Strength: Yield (Proof), MPa | 170 | |
| 130 |
Thermal Properties
| Latent Heat of Fusion, J/g | 200 | |
| 190 |
| Maximum Temperature: Mechanical, °C | 160 | |
| 170 |
| Melting Completion (Liquidus), °C | 900 | |
| 980 |
| Melting Onset (Solidus), °C | 880 | |
| 910 |
| Specific Heat Capacity, J/kg-K | 410 | |
| 370 |
| Thermal Expansion, µm/m-K | 20 | |
| 18 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 3.0 | |
| 14 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 3.3 | |
| 14 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 25 | |
| 32 |
| Density, g/cm3 | 8.1 | |
| 8.8 |
| Embodied Carbon, kg CO2/kg material | 3.3 | |
| 3.4 |
| Embodied Energy, MJ/kg | 53 | |
| 55 |
| Embodied Water, L/kg | 320 | |
| 350 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 78 | |
| 41 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 120 | |
| 72 |
| Stiffness to Weight: Axial, points | 8.3 | |
| 6.9 |
| Stiffness to Weight: Bending, points | 20 | |
| 18 |
| Strength to Weight: Axial, points | 13 | |
| 9.4 |
| Strength to Weight: Bending, points | 14 | |
| 11 |
| Thermal Shock Resistance, points | 11 | |
| 11 |
Alloy Composition
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| Aluminum (Al), % | 0.5 to 3.0 | |
| 0 to 0.0050 |
| Antimony (Sb), % | 0 | |
| 0 to 0.25 |
| Copper (Cu), % | 54 to 65.5 | |
| 79 to 81 |
| Iron (Fe), % | 0 to 1.0 | |
| 0 to 0.3 |
| Lead (Pb), % | 0 to 2.0 | |
| 4.0 to 6.0 |
| Manganese (Mn), % | 11 to 15 | |
| 0 to 0.1 |
| Nickel (Ni), % | 4.0 to 6.0 | |
| 4.0 to 6.0 |
| Phosphorus (P), % | 0 | |
| 0 to 0.050 |
| Silicon (Si), % | 0 | |
| 0 to 0.0050 |
| Sulfur (S), % | 0 | |
| 0 to 0.080 |
| Tin (Sn), % | 0 to 1.0 | |
| 4.0 to 6.0 |
| Zinc (Zn), % | 19 to 25 | |
| 4.0 to 6.0 |
| Residuals, % | 0 to 0.3 | |
| 0 to 0.8 |