C31400 Bronze vs. C74400 Nickel Silver
Both C31400 bronze and C74400 nickel silver are copper alloys. They have 73% of their average alloy composition in common.
For each property being compared, the top bar is C31400 bronze and the bottom bar is C74400 nickel silver.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 110 |
| Elongation at Break, % | 6.8 to 29 | |
| 43 |
| Poisson's Ratio | 0.33 | |
| 0.31 |
| Shear Modulus, GPa | 42 | |
| 39 |
| Shear Strength, MPa | 180 to 240 | |
| 240 |
| Tensile Strength: Ultimate (UTS), MPa | 270 to 420 | |
| 350 |
| Tensile Strength: Yield (Proof), MPa | 78 to 310 | |
| 120 |
Thermal Properties
| Latent Heat of Fusion, J/g | 200 | |
| 180 |
| Maximum Temperature: Mechanical, °C | 180 | |
| 140 |
| Melting Completion (Liquidus), °C | 1040 | |
| 930 |
| Melting Onset (Solidus), °C | 1010 | |
| 910 |
| Specific Heat Capacity, J/kg-K | 380 | |
| 390 |
| Thermal Conductivity, W/m-K | 180 | |
| 120 |
| Thermal Expansion, µm/m-K | 18 | |
| 20 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 42 | |
| 26 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 43 | |
| 29 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 29 | |
| 25 |
| Density, g/cm3 | 8.8 | |
| 8.2 |
| Embodied Carbon, kg CO2/kg material | 2.6 | |
| 2.9 |
| Embodied Energy, MJ/kg | 42 | |
| 48 |
| Embodied Water, L/kg | 310 | |
| 320 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 26 to 59 | |
| 120 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 28 to 420 | |
| 63 |
| Stiffness to Weight: Axial, points | 7.1 | |
| 7.4 |
| Stiffness to Weight: Bending, points | 18 | |
| 19 |
| Strength to Weight: Axial, points | 8.7 to 13 | |
| 12 |
| Strength to Weight: Bending, points | 11 to 14 | |
| 14 |
| Thermal Diffusivity, mm2/s | 54 | |
| 37 |
| Thermal Shock Resistance, points | 9.6 to 15 | |
| 12 |
Alloy Composition
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| Copper (Cu), % | 87.5 to 90.5 | |
| 62 to 66 |
| Iron (Fe), % | 0 to 0.1 | |
| 0 to 0.050 |
| Lead (Pb), % | 1.3 to 2.5 | |
| 0 to 0.050 |
| Nickel (Ni), % | 0 to 0.7 | |
| 2.0 to 4.0 |
| Zinc (Zn), % | 5.8 to 11.2 | |
| 29.6 to 36 |
| Residuals, % | 0 to 0.4 | |
| 0 to 0.3 |