C27000 Brass vs. C72500 Copper-nickel
Both C27000 brass and C72500 copper-nickel are copper alloys. They have 66% of their average alloy composition in common.
For each property being compared, the top bar is C27000 brass and the bottom bar is C72500 copper-nickel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 120 |
| Poisson's Ratio | 0.31 | |
| 0.34 |
| Rockwell B Hardness | 53 to 91 | |
| 75 to 100 |
| Rockwell Superficial 30T Hardness | 52 to 78 | |
| 62 to 89 |
| Shear Modulus, GPa | 40 | |
| 45 |
| Tensile Strength: Ultimate (UTS), MPa | 370 to 650 | |
| 420 to 780 |
Thermal Properties
| Latent Heat of Fusion, J/g | 180 | |
| 210 |
| Maximum Temperature: Mechanical, °C | 130 | |
| 210 |
| Melting Completion (Liquidus), °C | 930 | |
| 1130 |
| Melting Onset (Solidus), °C | 900 | |
| 1060 |
| Specific Heat Capacity, J/kg-K | 390 | |
| 390 |
| Thermal Conductivity, W/m-K | 120 | |
| 54 |
| Thermal Expansion, µm/m-K | 20 | |
| 17 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 27 | |
| 11 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 30 | |
| 11 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 24 | |
| 35 |
| Density, g/cm3 | 8.1 | |
| 8.9 |
| Embodied Carbon, kg CO2/kg material | 2.7 | |
| 3.6 |
| Embodied Energy, MJ/kg | 45 | |
| 55 |
| Embodied Water, L/kg | 320 | |
| 320 |
Common Calculations
| Stiffness to Weight: Axial, points | 7.2 | |
| 7.6 |
| Stiffness to Weight: Bending, points | 19 | |
| 19 |
| Strength to Weight: Axial, points | 13 to 22 | |
| 13 to 24 |
| Strength to Weight: Bending, points | 14 to 21 | |
| 14 to 21 |
| Thermal Diffusivity, mm2/s | 37 | |
| 16 |
| Thermal Shock Resistance, points | 12 to 22 | |
| 14 to 27 |
Alloy Composition
| Copper (Cu), % | 63 to 68.5 | |
| 85.2 to 89.7 |
| Iron (Fe), % | 0 to 0.1 | |
| 0 to 0.6 |
| Lead (Pb), % | 0 to 0.070 | |
| 0 to 0.050 |
| Manganese (Mn), % | 0 | |
| 0 to 0.2 |
| Nickel (Ni), % | 0 | |
| 8.5 to 10.5 |
| Tin (Sn), % | 0 | |
| 1.8 to 2.8 |
| Zinc (Zn), % | 31 to 37 | |
| 0 to 0.5 |
| Residuals, % | 0 | |
| 0 to 0.2 |