C28000 Muntz Metal vs. C71520 Copper-nickel
Both C28000 Muntz Metal and C71520 copper-nickel are copper alloys. They have 61% of their average alloy composition in common.
For each property being compared, the top bar is C28000 Muntz Metal and the bottom bar is C71520 copper-nickel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 100 | |
| 140 |
| Elongation at Break, % | 10 to 45 | |
| 10 to 45 |
| Poisson's Ratio | 0.31 | |
| 0.33 |
| Rockwell B Hardness | 55 to 78 | |
| 35 to 86 |
| Shear Modulus, GPa | 40 | |
| 51 |
| Shear Strength, MPa | 230 to 330 | |
| 250 to 340 |
| Tensile Strength: Ultimate (UTS), MPa | 330 to 610 | |
| 370 to 570 |
| Tensile Strength: Yield (Proof), MPa | 150 to 370 | |
| 140 to 430 |
Thermal Properties
| Latent Heat of Fusion, J/g | 170 | |
| 230 |
| Maximum Temperature: Mechanical, °C | 120 | |
| 260 |
| Melting Completion (Liquidus), °C | 900 | |
| 1170 |
| Melting Onset (Solidus), °C | 900 | |
| 1120 |
| Specific Heat Capacity, J/kg-K | 390 | |
| 400 |
| Thermal Conductivity, W/m-K | 120 | |
| 32 |
| Thermal Expansion, µm/m-K | 21 | |
| 15 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 28 | |
| 5.7 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 31 | |
| 5.8 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 23 | |
| 40 |
| Density, g/cm3 | 8.0 | |
| 8.9 |
| Embodied Carbon, kg CO2/kg material | 2.7 | |
| 5.0 |
| Embodied Energy, MJ/kg | 46 | |
| 73 |
| Embodied Water, L/kg | 320 | |
| 280 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 27 to 240 | |
| 54 to 130 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 110 to 670 | |
| 67 to 680 |
| Stiffness to Weight: Axial, points | 7.2 | |
| 8.6 |
| Stiffness to Weight: Bending, points | 20 | |
| 19 |
| Strength to Weight: Axial, points | 11 to 21 | |
| 12 to 18 |
| Strength to Weight: Bending, points | 13 to 20 | |
| 13 to 17 |
| Thermal Diffusivity, mm2/s | 40 | |
| 8.9 |
| Thermal Shock Resistance, points | 11 to 20 | |
| 12 to 19 |
Alloy Composition
| Carbon (C), % | 0 | |
| 0 to 0.050 |
| Copper (Cu), % | 59 to 63 | |
| 65 to 71.6 |
| Iron (Fe), % | 0 to 0.070 | |
| 0.4 to 1.0 |
| Lead (Pb), % | 0 to 0.3 | |
| 0 to 0.020 |
| Manganese (Mn), % | 0 | |
| 0 to 1.0 |
| Nickel (Ni), % | 0 | |
| 28 to 33 |
| Phosphorus (P), % | 0 | |
| 0 to 0.2 |
| Sulfur (S), % | 0 | |
| 0 to 0.020 |
| Zinc (Zn), % | 36.3 to 41 | |
| 0 to 0.5 |
| Residuals, % | 0 | |
| 0 to 0.5 |