H04 C51900 Bronze vs. H04 C71520 Copper-nickel
Both H04 C51900 bronze and H04 C71520 copper-nickel are copper alloys. Both are furnished in the H04 (full hard) temper. They have 69% of their average alloy composition in common.
For each property being compared, the top bar is H04 C51900 bronze and the bottom bar is H04 C71520 copper-nickel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 140 |
| Elongation at Break, % | 14 | |
| 10 |
| Poisson's Ratio | 0.34 | |
| 0.33 |
| Rockwell B Hardness | 91 | |
| 86 |
| Rockwell Superficial 30T Hardness | 76 | |
| 74 |
| Shear Modulus, GPa | 42 | |
| 51 |
| Shear Strength, MPa | 370 | |
| 340 |
| Tensile Strength: Ultimate (UTS), MPa | 620 | |
| 570 |
| Tensile Strength: Yield (Proof), MPa | 570 | |
| 430 |
Thermal Properties
| Latent Heat of Fusion, J/g | 200 | |
| 230 |
| Maximum Temperature: Mechanical, °C | 180 | |
| 260 |
| Melting Completion (Liquidus), °C | 1040 | |
| 1170 |
| Melting Onset (Solidus), °C | 930 | |
| 1120 |
| Specific Heat Capacity, J/kg-K | 380 | |
| 400 |
| Thermal Conductivity, W/m-K | 66 | |
| 32 |
| Thermal Expansion, µm/m-K | 18 | |
| 15 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 14 | |
| 5.7 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 14 | |
| 5.8 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 33 | |
| 40 |
| Density, g/cm3 | 8.8 | |
| 8.9 |
| Embodied Carbon, kg CO2/kg material | 3.2 | |
| 5.0 |
| Embodied Energy, MJ/kg | 51 | |
| 73 |
| Embodied Water, L/kg | 360 | |
| 280 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 86 | |
| 54 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1450 | |
| 680 |
| Stiffness to Weight: Axial, points | 7.0 | |
| 8.6 |
| Stiffness to Weight: Bending, points | 18 | |
| 19 |
| Strength to Weight: Axial, points | 19 | |
| 18 |
| Strength to Weight: Bending, points | 18 | |
| 17 |
| Thermal Diffusivity, mm2/s | 20 | |
| 8.9 |
| Thermal Shock Resistance, points | 22 | |
| 19 |
Alloy Composition
| Carbon (C), % | 0 | |
| 0 to 0.050 |
| Copper (Cu), % | 91.7 to 95 | |
| 65 to 71.6 |
| Iron (Fe), % | 0 to 0.1 | |
| 0.4 to 1.0 |
| Lead (Pb), % | 0 to 0.050 | |
| 0 to 0.020 |
| Manganese (Mn), % | 0 | |
| 0 to 1.0 |
| Nickel (Ni), % | 0 | |
| 28 to 33 |
| Phosphorus (P), % | 0.030 to 0.35 | |
| 0 to 0.2 |
| Sulfur (S), % | 0 | |
| 0 to 0.020 |
| Tin (Sn), % | 5.0 to 7.0 | |
| 0 |
| Zinc (Zn), % | 0 to 0.3 | |
| 0 to 0.5 |
| Residuals, % | 0 | |
| 0 to 0.5 |