C68000 Brass vs. C55181 Copper
Both C68000 brass and C55181 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 21 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.
For each property being compared, the top bar is C68000 brass and the bottom bar is C55181 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 | |
| 200 |
Thermal Properties
| Brazing Temperature, °C | 880 to 980 | |
| 730 to 840 |
| Latent Heat of Fusion, J/g | 170 | |
| 190 |
| Maximum Temperature: Mechanical, °C | 120 | |
| 200 |
| Melting Completion (Liquidus), °C | 880 | |
| 790 |
| Melting Onset (Solidus), °C | 870 | |
| 710 |
| Specific Heat Capacity, J/kg-K | 390 | |
| 410 |
| Thermal Expansion, µm/m-K | 21 | |
| 16 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 23 | |
| 28 |
| Density, g/cm3 | 8.0 | |
| 8.5 |
| Embodied Carbon, kg CO2/kg material | 2.8 | |
| 2.4 |
| Embodied Energy, MJ/kg | 48 | |
| 38 |
| Embodied Water, L/kg | 330 | |
| 290 |
Common Calculations
| Stiffness to Weight: Axial, points | 7.3 | |
| 7.0 |
| Stiffness to Weight: Bending, points | 20 | |
| 19 |
| Strength to Weight: Axial, points | 14 | |
| 6.5 |
| Strength to Weight: Bending, points | 15 | |
| 8.9 |
| Thermal Shock Resistance, points | 13 | |
| 8.2 |
Alloy Composition
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| Aluminum (Al), % | 0 to 0.010 | |
| 0 |
| Copper (Cu), % | 56 to 60 | |
| 92.4 to 93 |
| 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 | |
| 7.0 to 7.5 |
| Silicon (Si), % | 0.040 to 0.15 | |
| 0 |
| Tin (Sn), % | 0.75 to 1.1 | |
| 0 |
| Zinc (Zn), % | 35.6 to 42.8 | |
| 0 |
| Residuals, % | 0 to 0.5 | |
| 0 to 0.15 |