C90900 Bronze vs. C85900 Brass
Both C90900 bronze and C85900 brass are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 62% of their average alloy composition in common.
For each property being compared, the top bar is C90900 bronze and the bottom bar is C85900 brass.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 90 | |
| 85 |
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 100 |
| Elongation at Break, % | 15 | |
| 30 |
| Poisson's Ratio | 0.34 | |
| 0.31 |
| Shear Modulus, GPa | 40 | |
| 40 |
| Tensile Strength: Ultimate (UTS), MPa | 280 | |
| 460 |
| Tensile Strength: Yield (Proof), MPa | 140 | |
| 190 |
Thermal Properties
| Latent Heat of Fusion, J/g | 190 | |
| 170 |
| Maximum Temperature: Mechanical, °C | 160 | |
| 130 |
| Melting Completion (Liquidus), °C | 980 | |
| 830 |
| Melting Onset (Solidus), °C | 820 | |
| 790 |
| Specific Heat Capacity, J/kg-K | 360 | |
| 390 |
| Thermal Conductivity, W/m-K | 65 | |
| 89 |
| Thermal Expansion, µm/m-K | 18 | |
| 20 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 11 | |
| 25 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 11 | |
| 28 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 36 | |
| 24 |
| Density, g/cm3 | 8.7 | |
| 8.0 |
| Embodied Carbon, kg CO2/kg material | 3.9 | |
| 2.9 |
| Embodied Energy, MJ/kg | 64 | |
| 49 |
| Embodied Water, L/kg | 410 | |
| 330 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 35 | |
| 110 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 89 | |
| 170 |
| Stiffness to Weight: Axial, points | 6.8 | |
| 7.3 |
| Stiffness to Weight: Bending, points | 18 | |
| 20 |
| Strength to Weight: Axial, points | 8.8 | |
| 16 |
| Strength to Weight: Bending, points | 11 | |
| 17 |
| Thermal Diffusivity, mm2/s | 21 | |
| 29 |
| Thermal Shock Resistance, points | 10 | |
| 16 |
Alloy Composition
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| Aluminum (Al), % | 0 to 0.0050 | |
| 0.1 to 0.6 |
| Antimony (Sb), % | 0 to 0.2 | |
| 0 to 0.2 |
| Boron (B), % | 0 | |
| 0 to 0.2 |
| Copper (Cu), % | 86 to 89 | |
| 58 to 62 |
| Iron (Fe), % | 0 to 0.15 | |
| 0 to 0.5 |
| Lead (Pb), % | 0 to 0.25 | |
| 0 to 0.090 |
| Manganese (Mn), % | 0 | |
| 0 to 0.010 |
| Nickel (Ni), % | 0 to 0.5 | |
| 0 to 1.5 |
| Phosphorus (P), % | 0 to 0.050 | |
| 0 to 0.010 |
| Silicon (Si), % | 0 to 0.0050 | |
| 0 to 0.25 |
| Sulfur (S), % | 0 to 0.050 | |
| 0.1 to 0.65 |
| Tin (Sn), % | 12 to 14 | |
| 0 to 1.5 |
| Zinc (Zn), % | 0 to 0.25 | |
| 31 to 41 |
| Zirconium (Zr), % | 0 | |
| 0 to 0.2 |
| Residuals, % | 0 to 0.6 | |
| 0 to 0.7 |