C84500 Brass vs. C90900 Bronze
Both C84500 brass and C90900 bronze are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 82% of their average alloy composition in common.
For each property being compared, the top bar is C84500 brass and the bottom bar is C90900 bronze.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 55 | |
| 90 |
| Elastic (Young's, Tensile) Modulus, GPa | 100 | |
| 110 |
| Elongation at Break, % | 28 | |
| 15 |
| Poisson's Ratio | 0.34 | |
| 0.34 |
| Shear Modulus, GPa | 39 | |
| 40 |
| Tensile Strength: Ultimate (UTS), MPa | 240 | |
| 280 |
| Tensile Strength: Yield (Proof), MPa | 97 | |
| 140 |
Thermal Properties
| Latent Heat of Fusion, J/g | 180 | |
| 190 |
| Maximum Temperature: Mechanical, °C | 150 | |
| 160 |
| Melting Completion (Liquidus), °C | 980 | |
| 980 |
| Melting Onset (Solidus), °C | 840 | |
| 820 |
| Specific Heat Capacity, J/kg-K | 360 | |
| 360 |
| Thermal Conductivity, W/m-K | 72 | |
| 65 |
| Thermal Expansion, µm/m-K | 19 | |
| 18 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 16 | |
| 11 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 17 | |
| 11 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 28 | |
| 36 |
| Density, g/cm3 | 8.7 | |
| 8.7 |
| Embodied Carbon, kg CO2/kg material | 2.9 | |
| 3.9 |
| Embodied Energy, MJ/kg | 47 | |
| 64 |
| Embodied Water, L/kg | 340 | |
| 410 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 54 | |
| 35 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 45 | |
| 89 |
| Stiffness to Weight: Axial, points | 6.6 | |
| 6.8 |
| Stiffness to Weight: Bending, points | 18 | |
| 18 |
| Strength to Weight: Axial, points | 7.7 | |
| 8.8 |
| Strength to Weight: Bending, points | 9.8 | |
| 11 |
| Thermal Diffusivity, mm2/s | 23 | |
| 21 |
| Thermal Shock Resistance, points | 8.6 | |
| 10 |
Alloy Composition
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| Aluminum (Al), % | 0 to 0.0050 | |
| 0 to 0.0050 |
| Antimony (Sb), % | 0 to 0.25 | |
| 0 to 0.2 |
| Copper (Cu), % | 77 to 79 | |
| 86 to 89 |
| Iron (Fe), % | 0 to 0.4 | |
| 0 to 0.15 |
| Lead (Pb), % | 6.0 to 7.5 | |
| 0 to 0.25 |
| Nickel (Ni), % | 0 to 1.0 | |
| 0 to 0.5 |
| Phosphorus (P), % | 0 to 0.020 | |
| 0 to 0.050 |
| Silicon (Si), % | 0 to 0.0050 | |
| 0 to 0.0050 |
| Sulfur (S), % | 0 to 0.080 | |
| 0 to 0.050 |
| Tin (Sn), % | 2.0 to 4.0 | |
| 12 to 14 |
| Zinc (Zn), % | 10 to 14 | |
| 0 to 0.25 |
| Residuals, % | 0 to 0.7 | |
| 0 to 0.6 |