C68400 Brass vs. C70700 Copper-nickel
Both C68400 brass and C70700 copper-nickel are copper alloys. They have 62% of their average alloy composition in common.
For each property being compared, the top bar is C68400 brass and the bottom bar is C70700 copper-nickel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 150 | |
| 73 |
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 120 |
| Elongation at Break, % | 18 | |
| 39 |
| Poisson's Ratio | 0.31 | |
| 0.34 |
| Shear Modulus, GPa | 41 | |
| 46 |
| Shear Strength, MPa | 330 | |
| 220 |
| Tensile Strength: Ultimate (UTS), MPa | 540 | |
| 320 |
| Tensile Strength: Yield (Proof), MPa | 310 | |
| 110 |
Thermal Properties
| Latent Heat of Fusion, J/g | 210 | |
| 220 |
| Maximum Temperature: Mechanical, °C | 130 | |
| 220 |
| Melting Completion (Liquidus), °C | 840 | |
| 1120 |
| Melting Onset (Solidus), °C | 820 | |
| 1060 |
| Specific Heat Capacity, J/kg-K | 400 | |
| 390 |
| Thermal Conductivity, W/m-K | 66 | |
| 59 |
| Thermal Expansion, µm/m-K | 20 | |
| 16 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 87 | |
| 11 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 99 | |
| 12 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 23 | |
| 34 |
| Density, g/cm3 | 7.9 | |
| 8.9 |
| Embodied Carbon, kg CO2/kg material | 2.7 | |
| 3.4 |
| Embodied Energy, MJ/kg | 47 | |
| 52 |
| Embodied Water, L/kg | 320 | |
| 300 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 81 | |
| 100 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 460 | |
| 51 |
| Stiffness to Weight: Axial, points | 7.5 | |
| 7.6 |
| Stiffness to Weight: Bending, points | 20 | |
| 19 |
| Strength to Weight: Axial, points | 19 | |
| 10 |
| Strength to Weight: Bending, points | 19 | |
| 12 |
| Thermal Diffusivity, mm2/s | 21 | |
| 17 |
| Thermal Shock Resistance, points | 18 | |
| 12 |
Alloy Composition
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| Aluminum (Al), % | 0 to 0.5 | |
| 0 |
| Boron (B), % | 0.0010 to 0.030 | |
| 0 |
| Copper (Cu), % | 59 to 64 | |
| 88.5 to 90.5 |
| Iron (Fe), % | 0 to 1.0 | |
| 0 to 0.050 |
| Lead (Pb), % | 0 to 0.090 | |
| 0 |
| Manganese (Mn), % | 0.2 to 1.5 | |
| 0 to 0.5 |
| Nickel (Ni), % | 0 to 0.5 | |
| 9.5 to 10.5 |
| Phosphorus (P), % | 0.030 to 0.3 | |
| 0 |
| Silicon (Si), % | 1.5 to 2.5 | |
| 0 |
| Tin (Sn), % | 0 to 0.5 | |
| 0 |
| Zinc (Zn), % | 28.6 to 39.3 | |
| 0 |
| Residuals, % | 0 to 0.5 | |
| 0 to 0.5 |