H08 C27400 Brass vs. H08 C71000 Copper-nickel
Both H08 C27400 brass and H08 C71000 copper-nickel are copper alloys. Both are furnished in the H08 (spring) temper. They have 63% of their average alloy composition in common.
For each property being compared, the top bar is H08 C27400 brass and the bottom bar is H08 C71000 copper-nickel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 130 |
| Poisson's Ratio | 0.31 | |
| 0.33 |
| Rockwell B Hardness | 90 | |
| 85 |
| Rockwell Superficial 30T Hardness | 77 | |
| 73 |
| Shear Modulus, GPa | 40 | |
| 49 |
| Tensile Strength: Ultimate (UTS), MPa | 630 | |
| 560 |
Thermal Properties
| Latent Heat of Fusion, J/g | 170 | |
| 230 |
| Maximum Temperature: Mechanical, °C | 120 | |
| 240 |
| Melting Completion (Liquidus), °C | 920 | |
| 1200 |
| Melting Onset (Solidus), °C | 870 | |
| 1150 |
| Specific Heat Capacity, J/kg-K | 390 | |
| 400 |
| Thermal Conductivity, W/m-K | 120 | |
| 43 |
| Thermal Expansion, µm/m-K | 21 | |
| 15 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 28 | |
| 6.5 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 31 | |
| 6.6 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 23 | |
| 37 |
| Density, g/cm3 | 8.0 | |
| 8.9 |
| Embodied Carbon, kg CO2/kg material | 2.7 | |
| 4.3 |
| Embodied Energy, MJ/kg | 45 | |
| 63 |
| Embodied Water, L/kg | 320 | |
| 290 |
Common Calculations
| Stiffness to Weight: Axial, points | 7.2 | |
| 8.2 |
| Stiffness to Weight: Bending, points | 20 | |
| 19 |
| Strength to Weight: Axial, points | 22 | |
| 18 |
| Strength to Weight: Bending, points | 20 | |
| 17 |
| Thermal Diffusivity, mm2/s | 37 | |
| 12 |
| Thermal Shock Resistance, points | 21 | |
| 20 |
Alloy Composition
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| Copper (Cu), % | 61 to 64 | |
| 73.5 to 80.5 |
| Iron (Fe), % | 0 to 0.1 | |
| 0.5 to 1.0 |
| Lead (Pb), % | 0 to 0.050 | |
| 0 to 0.050 |
| Manganese (Mn), % | 0 | |
| 0 to 1.0 |
| Nickel (Ni), % | 0 | |
| 19 to 23 |
| Zinc (Zn), % | 35.6 to 39 | |
| 0 to 1.0 |
| Residuals, % | 0 to 0.3 | |
| 0 to 0.5 |