H08 C23000 Brass vs. H08 C70600 Copper-nickel
Both H08 C23000 brass and H08 C70600 copper-nickel are copper alloys. Both are furnished in the H08 (spring) temper. They have 86% of their average alloy composition in common.
For each property being compared, the top bar is H08 C23000 brass and the bottom bar is H08 C70600 copper-nickel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 120 |
| Elongation at Break, % | 3.0 | |
| 3.0 |
| Poisson's Ratio | 0.33 | |
| 0.34 |
| Rockwell B Hardness | 85 | |
| 86 |
| Rockwell Superficial 30T Hardness | 76 | |
| 75 |
| Shear Modulus, GPa | 42 | |
| 46 |
| Shear Strength, MPa | 320 | |
| 330 |
| Tensile Strength: Ultimate (UTS), MPa | 570 | |
| 570 |
| Tensile Strength: Yield (Proof), MPa | 440 | |
| 79 |
Thermal Properties
| Latent Heat of Fusion, J/g | 190 | |
| 220 |
| Maximum Temperature: Mechanical, °C | 170 | |
| 220 |
| Melting Completion (Liquidus), °C | 1030 | |
| 1150 |
| Melting Onset (Solidus), °C | 990 | |
| 1100 |
| Specific Heat Capacity, J/kg-K | 390 | |
| 390 |
| Thermal Conductivity, W/m-K | 160 | |
| 44 |
| Thermal Expansion, µm/m-K | 19 | |
| 17 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 37 | |
| 9.8 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 39 | |
| 9.9 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 28 | |
| 33 |
| Calomel Potential, mV | -350 | |
| -280 |
| Density, g/cm3 | 8.6 | |
| 8.9 |
| Embodied Carbon, kg CO2/kg material | 2.6 | |
| 3.4 |
| Embodied Energy, MJ/kg | 43 | |
| 51 |
| Embodied Water, L/kg | 310 | |
| 300 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 16 | |
| 12 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 850 | |
| 25 |
| Stiffness to Weight: Axial, points | 7.2 | |
| 7.7 |
| Stiffness to Weight: Bending, points | 19 | |
| 19 |
| Strength to Weight: Axial, points | 18 | |
| 18 |
| Strength to Weight: Bending, points | 18 | |
| 17 |
| Thermal Diffusivity, mm2/s | 48 | |
| 13 |
| Thermal Shock Resistance, points | 20 | |
| 19 |
Alloy Composition
| Copper (Cu), % | 84 to 86 | |
| 84.7 to 90 |
| Iron (Fe), % | 0 to 0.050 | |
| 1.0 to 1.8 |
| Lead (Pb), % | 0 to 0.050 | |
| 0 to 0.050 |
| Manganese (Mn), % | 0 | |
| 0 to 1.0 |
| Nickel (Ni), % | 0 | |
| 9.0 to 11 |
| Zinc (Zn), % | 13.7 to 16 | |
| 0 to 1.0 |
| Residuals, % | 0 | |
| 0 to 0.5 |