C69700 Brass vs. C70250 Copper
Both C69700 brass and C70250 copper are copper alloys. They have 79% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.
For each property being compared, the top bar is C69700 brass and the bottom bar is C70250 copper.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 120 |
| Poisson's Ratio | 0.32 | |
| 0.34 |
| Shear Modulus, GPa | 41 | |
| 44 |
| Tensile Strength: Ultimate (UTS), MPa | 470 | |
| 520 to 740 |
Thermal Properties
| Latent Heat of Fusion, J/g | 240 | |
| 220 |
| Maximum Temperature: Mechanical, °C | 160 | |
| 210 |
| Melting Completion (Liquidus), °C | 930 | |
| 1100 |
| Melting Onset (Solidus), °C | 880 | |
| 1080 |
| Specific Heat Capacity, J/kg-K | 400 | |
| 390 |
| Thermal Conductivity, W/m-K | 43 | |
| 170 |
| Thermal Expansion, µm/m-K | 19 | |
| 17 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 26 | |
| 31 |
| Density, g/cm3 | 8.3 | |
| 8.9 |
| Embodied Carbon, kg CO2/kg material | 2.7 | |
| 2.9 |
| Embodied Energy, MJ/kg | 44 | |
| 45 |
| Embodied Water, L/kg | 310 | |
| 310 |
Common Calculations
| Stiffness to Weight: Axial, points | 7.3 | |
| 7.4 |
| Stiffness to Weight: Bending, points | 19 | |
| 18 |
| Strength to Weight: Axial, points | 16 | |
| 16 to 23 |
| Strength to Weight: Bending, points | 16 | |
| 16 to 21 |
| Thermal Diffusivity, mm2/s | 13 | |
| 49 |
| Thermal Shock Resistance, points | 16 | |
| 18 to 26 |
Alloy Composition
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| Copper (Cu), % | 75 to 80 | |
| 92.7 to 97.5 |
| Iron (Fe), % | 0 to 0.2 | |
| 0 |
| Lead (Pb), % | 0.5 to 1.5 | |
| 0 to 0.050 |
| Magnesium (Mg), % | 0 | |
| 0.050 to 0.3 |
| Manganese (Mn), % | 0 to 0.4 | |
| 0 to 0.1 |
| Nickel (Ni), % | 0 | |
| 2.2 to 4.2 |
| Silicon (Si), % | 2.5 to 3.5 | |
| 0.25 to 1.2 |
| Zinc (Zn), % | 13.9 to 22 | |
| 0 to 1.0 |
| Residuals, % | 0 to 0.5 | |
| 0 to 0.5 |