C72700 Copper-nickel vs. C47940 Brass
Both C72700 copper-nickel and C47940 brass are copper alloys. They have 67% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.
For each property being compared, the top bar is C72700 copper-nickel and the bottom bar is C47940 brass.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 120 | |
| 100 |
| Elongation at Break, % | 4.0 to 36 | |
| 14 to 34 |
| Poisson's Ratio | 0.34 | |
| 0.31 |
| Shear Modulus, GPa | 44 | |
| 40 |
| Shear Strength, MPa | 310 to 620 | |
| 250 to 310 |
| Tensile Strength: Ultimate (UTS), MPa | 460 to 1070 | |
| 380 to 520 |
| Tensile Strength: Yield (Proof), MPa | 580 to 1060 | |
| 160 to 390 |
Thermal Properties
| Latent Heat of Fusion, J/g | 210 | |
| 170 |
| Maximum Temperature: Mechanical, °C | 200 | |
| 130 |
| Melting Completion (Liquidus), °C | 1100 | |
| 850 |
| Melting Onset (Solidus), °C | 930 | |
| 800 |
| Specific Heat Capacity, J/kg-K | 380 | |
| 380 |
| Thermal Conductivity, W/m-K | 54 | |
| 110 |
| Thermal Expansion, µm/m-K | 17 | |
| 20 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 36 | |
| 25 |
| Density, g/cm3 | 8.8 | |
| 8.2 |
| Embodied Carbon, kg CO2/kg material | 4.0 | |
| 2.8 |
| Embodied Energy, MJ/kg | 62 | |
| 47 |
| Embodied Water, L/kg | 350 | |
| 330 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 20 to 380 | |
| 68 to 100 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1420 to 4770 | |
| 120 to 740 |
| Stiffness to Weight: Axial, points | 7.4 | |
| 7.1 |
| Stiffness to Weight: Bending, points | 19 | |
| 19 |
| Strength to Weight: Axial, points | 14 to 34 | |
| 13 to 17 |
| Strength to Weight: Bending, points | 15 to 26 | |
| 14 to 17 |
| Thermal Diffusivity, mm2/s | 16 | |
| 36 |
| Thermal Shock Resistance, points | 16 to 38 | |
| 13 to 17 |
Alloy Composition
| Copper (Cu), % | 82.1 to 86 | |
| 63 to 66 |
| Iron (Fe), % | 0 to 0.5 | |
| 0.1 to 1.0 |
| Lead (Pb), % | 0 to 0.020 | |
| 1.0 to 2.0 |
| Magnesium (Mg), % | 0 to 0.15 | |
| 0 |
| Manganese (Mn), % | 0.050 to 0.3 | |
| 0 |
| Nickel (Ni), % | 8.5 to 9.5 | |
| 0.1 to 0.5 |
| Niobium (Nb), % | 0 to 0.1 | |
| 0 |
| Tin (Sn), % | 5.5 to 6.5 | |
| 1.2 to 2.0 |
| Zinc (Zn), % | 0 to 0.5 | |
| 28.1 to 34.6 |
| Residuals, % | 0 | |
| 0 to 0.4 |