CC755S Brass vs. CC490K Brass
Both CC755S brass and CC490K brass are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 70% of their average alloy composition in common.
For each property being compared, the top bar is CC755S brass and the bottom bar is CC490K brass.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 110 | |
| 76 |
| Elastic (Young's, Tensile) Modulus, GPa | 100 | |
| 110 |
| Elongation at Break, % | 9.5 | |
| 15 |
| Poisson's Ratio | 0.31 | |
| 0.34 |
| Shear Modulus, GPa | 40 | |
| 40 |
| Tensile Strength: Ultimate (UTS), MPa | 390 | |
| 230 |
| Tensile Strength: Yield (Proof), MPa | 250 | |
| 110 |
Thermal Properties
| Latent Heat of Fusion, J/g | 170 | |
| 190 |
| Maximum Temperature: Mechanical, °C | 120 | |
| 160 |
| Melting Completion (Liquidus), °C | 820 | |
| 980 |
| Melting Onset (Solidus), °C | 780 | |
| 910 |
| Specific Heat Capacity, J/kg-K | 390 | |
| 370 |
| Thermal Conductivity, W/m-K | 120 | |
| 72 |
| Thermal Expansion, µm/m-K | 21 | |
| 19 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 27 | |
| 16 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 30 | |
| 16 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 23 | |
| 30 |
| Density, g/cm3 | 8.1 | |
| 8.8 |
| Embodied Carbon, kg CO2/kg material | 2.7 | |
| 2.9 |
| Embodied Energy, MJ/kg | 46 | |
| 47 |
| Embodied Water, L/kg | 330 | |
| 340 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 33 | |
| 28 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 290 | |
| 54 |
| Stiffness to Weight: Axial, points | 7.1 | |
| 6.8 |
| Stiffness to Weight: Bending, points | 19 | |
| 18 |
| Strength to Weight: Axial, points | 14 | |
| 7.3 |
| Strength to Weight: Bending, points | 15 | |
| 9.5 |
| Thermal Diffusivity, mm2/s | 38 | |
| 22 |
| Thermal Shock Resistance, points | 13 | |
| 8.2 |
Alloy Composition
| Aluminum (Al), % | 0.4 to 0.7 | |
| 0 to 0.010 |
| Antimony (Sb), % | 0 | |
| 0 to 0.3 |
| Copper (Cu), % | 59.5 to 61 | |
| 81 to 86 |
| Iron (Fe), % | 0.050 to 0.2 | |
| 0 to 0.5 |
| Lead (Pb), % | 1.2 to 1.7 | |
| 3.0 to 6.0 |
| Manganese (Mn), % | 0 to 0.050 | |
| 0 |
| Nickel (Ni), % | 0 to 0.2 | |
| 0 to 2.0 |
| Phosphorus (P), % | 0 | |
| 0 to 0.050 |
| Silicon (Si), % | 0 to 0.050 | |
| 0 to 0.010 |
| Sulfur (S), % | 0 | |
| 0 to 0.1 |
| Tin (Sn), % | 0 to 0.3 | |
| 2.0 to 3.5 |
| Zinc (Zn), % | 35.8 to 38.9 | |
| 7.0 to 9.5 |