M20 C54400 Bronze vs. M20 C77000 Nickel Silver
Both M20 C54400 bronze and M20 C77000 nickel silver are copper alloys. Both are furnished in the M20 (as hot rolled) condition. They have 58% of their average alloy composition in common.
For each property being compared, the top bar is M20 C54400 bronze and the bottom bar is M20 C77000 nickel silver.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 120 |
| Poisson's Ratio | 0.34 | |
| 0.31 |
| Shear Modulus, GPa | 40 | |
| 46 |
| Tensile Strength: Ultimate (UTS), MPa | 350 | |
| 480 |
Thermal Properties
| Latent Heat of Fusion, J/g | 190 | |
| 200 |
| Maximum Temperature: Mechanical, °C | 170 | |
| 180 |
| Melting Completion (Liquidus), °C | 1000 | |
| 1050 |
| Melting Onset (Solidus), °C | 930 | |
| 1000 |
| Specific Heat Capacity, J/kg-K | 370 | |
| 400 |
| Thermal Conductivity, W/m-K | 86 | |
| 29 |
| Thermal Expansion, µm/m-K | 18 | |
| 17 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 19 | |
| 5.5 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 19 | |
| 6.0 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 31 | |
| 31 |
| Density, g/cm3 | 8.9 | |
| 8.3 |
| Embodied Carbon, kg CO2/kg material | 2.9 | |
| 4.1 |
| Embodied Energy, MJ/kg | 48 | |
| 63 |
| Embodied Water, L/kg | 340 | |
| 300 |
Common Calculations
| Stiffness to Weight: Axial, points | 6.8 | |
| 8.1 |
| Stiffness to Weight: Bending, points | 18 | |
| 20 |
| Strength to Weight: Axial, points | 11 | |
| 16 |
| Strength to Weight: Bending, points | 12 | |
| 16 |
| Thermal Diffusivity, mm2/s | 26 | |
| 8.8 |
| Thermal Shock Resistance, points | 13 | |
| 17 |
Alloy Composition
| Copper (Cu), % | 85.4 to 91.5 | |
| 53.5 to 56.5 |
| Iron (Fe), % | 0 to 0.1 | |
| 0 to 0.25 |
| Lead (Pb), % | 3.5 to 4.5 | |
| 0 to 0.050 |
| Manganese (Mn), % | 0 | |
| 0 to 0.5 |
| Nickel (Ni), % | 0 | |
| 16.5 to 19.5 |
| Phosphorus (P), % | 0.010 to 0.5 | |
| 0 |
| Tin (Sn), % | 3.5 to 4.5 | |
| 0 |
| Zinc (Zn), % | 1.5 to 4.5 | |
| 22.7 to 30 |
| Residuals, % | 0 | |
| 0 to 0.5 |