C28000 Muntz Metal vs. C67400 Bronze
Both C28000 Muntz Metal and C67400 bronze are copper alloys. They have a moderately high 94% of their average alloy composition in common.
For each property being compared, the top bar is C28000 Muntz Metal and the bottom bar is C67400 bronze.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 100 | |
| 110 |
| Elongation at Break, % | 10 to 45 | |
| 22 to 28 |
| Poisson's Ratio | 0.31 | |
| 0.31 |
| Rockwell B Hardness | 55 to 78 | |
| 78 to 85 |
| Shear Modulus, GPa | 40 | |
| 41 |
| Shear Strength, MPa | 230 to 330 | |
| 310 to 350 |
| Tensile Strength: Ultimate (UTS), MPa | 330 to 610 | |
| 480 to 610 |
| Tensile Strength: Yield (Proof), MPa | 150 to 370 | |
| 250 to 370 |
Thermal Properties
| Latent Heat of Fusion, J/g | 170 | |
| 190 |
| Maximum Temperature: Mechanical, °C | 120 | |
| 130 |
| Melting Completion (Liquidus), °C | 900 | |
| 890 |
| Melting Onset (Solidus), °C | 900 | |
| 870 |
| Specific Heat Capacity, J/kg-K | 390 | |
| 400 |
| Thermal Conductivity, W/m-K | 120 | |
| 100 |
| Thermal Expansion, µm/m-K | 21 | |
| 21 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 28 | |
| 23 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 31 | |
| 26 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 23 | |
| 23 |
| Density, g/cm3 | 8.0 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 2.7 | |
| 2.8 |
| Embodied Energy, MJ/kg | 46 | |
| 48 |
| Embodied Water, L/kg | 320 | |
| 330 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 27 to 240 | |
| 110 to 120 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 110 to 670 | |
| 300 to 660 |
| Stiffness to Weight: Axial, points | 7.2 | |
| 7.5 |
| Stiffness to Weight: Bending, points | 20 | |
| 20 |
| Strength to Weight: Axial, points | 11 to 21 | |
| 17 to 22 |
| Strength to Weight: Bending, points | 13 to 20 | |
| 17 to 20 |
| Thermal Diffusivity, mm2/s | 40 | |
| 32 |
| Thermal Shock Resistance, points | 11 to 20 | |
| 16 to 20 |
Alloy Composition
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| Aluminum (Al), % | 0 | |
| 0.5 to 2.0 |
| Copper (Cu), % | 59 to 63 | |
| 57 to 60 |
| Iron (Fe), % | 0 to 0.070 | |
| 0 to 0.35 |
| Lead (Pb), % | 0 to 0.3 | |
| 0 to 0.5 |
| Manganese (Mn), % | 0 | |
| 2.0 to 3.5 |
| Nickel (Ni), % | 0 | |
| 0 to 0.25 |
| Silicon (Si), % | 0 | |
| 0.5 to 1.5 |
| Tin (Sn), % | 0 | |
| 0 to 0.3 |
| Zinc (Zn), % | 36.3 to 41 | |
| 31.1 to 40 |
| Residuals, % | 0 to 0.3 | |
| 0 to 0.5 |