C70620 Copper-nickel vs. C23400 Brass
Both C70620 copper-nickel and C23400 brass are copper alloys. They have 83% of their average alloy composition in common.
For each property being compared, the top bar is C70620 copper-nickel and the bottom bar is C23400 brass.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 120 | |
| 110 |
| Poisson's Ratio | 0.34 | |
| 0.32 |
| Rockwell B Hardness | 65 to 87 | |
| 52 to 91 |
| Rockwell Superficial 30T Hardness | 61 to 75 | |
| 51 to 78 |
| Shear Modulus, GPa | 46 | |
| 42 |
| Tensile Strength: Ultimate (UTS), MPa | 300 to 570 | |
| 370 to 640 |
Thermal Properties
| Latent Heat of Fusion, J/g | 220 | |
| 190 |
| Maximum Temperature: Mechanical, °C | 220 | |
| 160 |
| Melting Completion (Liquidus), °C | 1120 | |
| 970 |
| Melting Onset (Solidus), °C | 1060 | |
| 930 |
| Specific Heat Capacity, J/kg-K | 390 | |
| 390 |
| Thermal Conductivity, W/m-K | 49 | |
| 120 |
| Thermal Expansion, µm/m-K | 17 | |
| 19 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 33 | |
| 27 |
| Density, g/cm3 | 8.9 | |
| 8.5 |
| Embodied Carbon, kg CO2/kg material | 3.4 | |
| 2.6 |
| Embodied Energy, MJ/kg | 51 | |
| 43 |
| Embodied Water, L/kg | 300 | |
| 320 |
Common Calculations
| Stiffness to Weight: Axial, points | 7.7 | |
| 7.2 |
| Stiffness to Weight: Bending, points | 19 | |
| 19 |
| Strength to Weight: Axial, points | 9.3 to 18 | |
| 12 to 21 |
| Strength to Weight: Bending, points | 11 to 17 | |
| 13 to 19 |
| Thermal Diffusivity, mm2/s | 14 | |
| 36 |
| Thermal Shock Resistance, points | 10 to 20 | |
| 12 to 22 |
Alloy Composition
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| Carbon (C), % | 0 to 0.050 | |
| 0 |
| Copper (Cu), % | 86.5 to 90 | |
| 81 to 84 |
| Iron (Fe), % | 1.0 to 1.8 | |
| 0 to 0.050 |
| Lead (Pb), % | 0 to 0.020 | |
| 0 to 0.050 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0 |
| Nickel (Ni), % | 9.0 to 11 | |
| 0 |
| Phosphorus (P), % | 0 to 0.2 | |
| 0 |
| Sulfur (S), % | 0 to 0.020 | |
| 0 |
| Zinc (Zn), % | 0 to 0.5 | |
| 15.7 to 19 |
| Residuals, % | 0 to 0.5 | |
| 0 to 0.2 |