CC490K Brass vs. CC491K Bronze
Both CC490K brass and CC491K bronze are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have a very high 97% of their average alloy composition in common.
For each property being compared, the top bar is CC490K brass and the bottom bar is CC491K bronze.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 76 | |
| 73 |
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 110 |
| Elongation at Break, % | 15 | |
| 13 |
| Poisson's Ratio | 0.34 | |
| 0.34 |
| Shear Modulus, GPa | 40 | |
| 40 |
| Tensile Strength: Ultimate (UTS), MPa | 230 | |
| 260 |
| Tensile Strength: Yield (Proof), MPa | 110 | |
| 120 |
Thermal Properties
| Latent Heat of Fusion, J/g | 190 | |
| 190 |
| Maximum Temperature: Mechanical, °C | 160 | |
| 160 |
| Melting Completion (Liquidus), °C | 980 | |
| 980 |
| Melting Onset (Solidus), °C | 910 | |
| 900 |
| Specific Heat Capacity, J/kg-K | 370 | |
| 370 |
| Thermal Conductivity, W/m-K | 72 | |
| 71 |
| Thermal Expansion, µm/m-K | 19 | |
| 19 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 16 | |
| 15 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 16 | |
| 15 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 30 | |
| 31 |
| Density, g/cm3 | 8.8 | |
| 8.9 |
| Embodied Carbon, kg CO2/kg material | 2.9 | |
| 3.1 |
| Embodied Energy, MJ/kg | 47 | |
| 51 |
| Embodied Water, L/kg | 340 | |
| 350 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 28 | |
| 27 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 54 | |
| 67 |
| Stiffness to Weight: Axial, points | 6.8 | |
| 6.7 |
| Stiffness to Weight: Bending, points | 18 | |
| 18 |
| Strength to Weight: Axial, points | 7.3 | |
| 8.1 |
| Strength to Weight: Bending, points | 9.5 | |
| 10 |
| Thermal Diffusivity, mm2/s | 22 | |
| 22 |
| Thermal Shock Resistance, points | 8.2 | |
| 9.3 |
Alloy Composition
| Aluminum (Al), % | 0 to 0.010 | |
| 0 to 0.010 |
| Antimony (Sb), % | 0 to 0.3 | |
| 0 to 0.25 |
| Copper (Cu), % | 81 to 86 | |
| 81 to 87 |
| Iron (Fe), % | 0 to 0.5 | |
| 0 to 0.3 |
| Lead (Pb), % | 3.0 to 6.0 | |
| 4.0 to 6.0 |
| Nickel (Ni), % | 0 to 2.0 | |
| 0 to 2.0 |
| Phosphorus (P), % | 0 to 0.050 | |
| 0 to 0.1 |
| Silicon (Si), % | 0 to 0.010 | |
| 0 to 0.010 |
| Sulfur (S), % | 0 to 0.1 | |
| 0 to 0.1 |
| Tin (Sn), % | 2.0 to 3.5 | |
| 4.0 to 6.0 |
| Zinc (Zn), % | 7.0 to 9.5 | |
| 4.0 to 6.0 |