CC761S Brass vs. CC491K Bronze
Both CC761S brass and CC491K 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 CC761S brass and the bottom bar is CC491K bronze.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 150 | |
| 73 |
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 110 |
| Elongation at Break, % | 8.7 | |
| 13 |
| Poisson's Ratio | 0.33 | |
| 0.34 |
| Shear Modulus, GPa | 42 | |
| 40 |
| Tensile Strength: Ultimate (UTS), MPa | 540 | |
| 260 |
| Tensile Strength: Yield (Proof), MPa | 340 | |
| 120 |
Thermal Properties
| Latent Heat of Fusion, J/g | 260 | |
| 190 |
| Maximum Temperature: Mechanical, °C | 170 | |
| 160 |
| Melting Completion (Liquidus), °C | 960 | |
| 980 |
| Melting Onset (Solidus), °C | 910 | |
| 900 |
| Specific Heat Capacity, J/kg-K | 410 | |
| 370 |
| Thermal Conductivity, W/m-K | 27 | |
| 71 |
| Thermal Expansion, µm/m-K | 18 | |
| 19 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 40 | |
| 15 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 43 | |
| 15 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 27 | |
| 31 |
| Density, g/cm3 | 8.3 | |
| 8.9 |
| Embodied Carbon, kg CO2/kg material | 2.7 | |
| 3.1 |
| Embodied Energy, MJ/kg | 45 | |
| 51 |
| Embodied Water, L/kg | 300 | |
| 350 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 41 | |
| 27 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 530 | |
| 67 |
| Stiffness to Weight: Axial, points | 7.4 | |
| 6.7 |
| Stiffness to Weight: Bending, points | 19 | |
| 18 |
| Strength to Weight: Axial, points | 18 | |
| 8.1 |
| Strength to Weight: Bending, points | 18 | |
| 10 |
| Thermal Diffusivity, mm2/s | 8.0 | |
| 22 |
| Thermal Shock Resistance, points | 19 | |
| 9.3 |
Alloy Composition
| Aluminum (Al), % | 0 to 0.1 | |
| 0 to 0.010 |
| Antimony (Sb), % | 0 to 0.050 | |
| 0 to 0.25 |
| Copper (Cu), % | 78 to 83 | |
| 81 to 87 |
| Iron (Fe), % | 0 to 0.6 | |
| 0 to 0.3 |
| Lead (Pb), % | 0 to 0.8 | |
| 4.0 to 6.0 |
| Manganese (Mn), % | 0 to 0.2 | |
| 0 |
| Nickel (Ni), % | 0 to 1.0 | |
| 0 to 2.0 |
| Phosphorus (P), % | 0 to 0.030 | |
| 0 to 0.1 |
| Silicon (Si), % | 3.0 to 5.0 | |
| 0 to 0.010 |
| Sulfur (S), % | 0 | |
| 0 to 0.1 |
| Tin (Sn), % | 0 to 0.3 | |
| 4.0 to 6.0 |
| Zinc (Zn), % | 8.9 to 19 | |
| 4.0 to 6.0 |