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