C68000 Brass vs. C55281 Copper
Both C68000 brass and C55281 copper are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 58% of their average alloy composition in common. There are 19 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.
For each property being compared, the top bar is C68000 brass and the bottom bar is C55281 copper.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 100 | |
| 110 |
| Poisson's Ratio | 0.3 | |
| 0.34 |
| Shear Modulus, GPa | 40 | |
| 40 |
| Tensile Strength: Ultimate (UTS), MPa | 390 | |
| 190 |
Thermal Properties
| Brazing Temperature, °C | 880 to 980 | |
| 720 to 820 |
| Latent Heat of Fusion, J/g | 170 | |
| 190 |
| Maximum Temperature: Mechanical, °C | 120 | |
| 200 |
| Melting Completion (Liquidus), °C | 880 | |
| 810 |
| Melting Onset (Solidus), °C | 870 | |
| 640 |
| Specific Heat Capacity, J/kg-K | 390 | |
| 400 |
| Thermal Expansion, µm/m-K | 21 | |
| 16 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.0 | |
| 8.7 |
| Embodied Carbon, kg CO2/kg material | 2.8 | |
| 7.0 |
| Embodied Energy, MJ/kg | 48 | |
| 110 |
Common Calculations
| Stiffness to Weight: Axial, points | 7.3 | |
| 6.9 |
| Stiffness to Weight: Bending, points | 20 | |
| 18 |
| Strength to Weight: Axial, points | 14 | |
| 6.1 |
| Strength to Weight: Bending, points | 15 | |
| 8.5 |
| Thermal Shock Resistance, points | 13 | |
| 7.7 |
Alloy Composition
| Aluminum (Al), % | 0 to 0.010 | |
| 0 |
| Copper (Cu), % | 56 to 60 | |
| 88.5 to 89.4 |
| Iron (Fe), % | 0.25 to 1.3 | |
| 0 |
| Lead (Pb), % | 0 to 0.050 | |
| 0 |
| Manganese (Mn), % | 0.010 to 0.5 | |
| 0 |
| Nickel (Ni), % | 0.2 to 0.8 | |
| 0 |
| Phosphorus (P), % | 0 | |
| 5.8 to 6.2 |
| Silicon (Si), % | 0.040 to 0.15 | |
| 0 |
| Silver (Ag), % | 0 | |
| 4.8 to 5.2 |
| Tin (Sn), % | 0.75 to 1.1 | |
| 0 |
| Zinc (Zn), % | 35.6 to 42.8 | |
| 0 |
| Residuals, % | 0 | |
| 0 to 0.15 |