C28000 Muntz Metal vs. C40500 Penny Bronze
Both C28000 Muntz Metal and C40500 penny bronze are copper alloys. They have 65% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.
For each property being compared, the top bar is C28000 Muntz Metal and the bottom bar is C40500 penny bronze.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 100 | |
| 110 |
| Elongation at Break, % | 10 to 45 | |
| 3.0 to 49 |
| Poisson's Ratio | 0.31 | |
| 0.34 |
| Rockwell B Hardness | 55 to 78 | |
| 46 to 82 |
| Shear Modulus, GPa | 40 | |
| 43 |
| Shear Strength, MPa | 230 to 330 | |
| 210 to 310 |
| Tensile Strength: Ultimate (UTS), MPa | 330 to 610 | |
| 270 to 540 |
| Tensile Strength: Yield (Proof), MPa | 150 to 370 | |
| 79 to 520 |
Thermal Properties
| Latent Heat of Fusion, J/g | 170 | |
| 200 |
| Maximum Temperature: Mechanical, °C | 120 | |
| 190 |
| Melting Completion (Liquidus), °C | 900 | |
| 1060 |
| Melting Onset (Solidus), °C | 900 | |
| 1020 |
| Specific Heat Capacity, J/kg-K | 390 | |
| 380 |
| Thermal Conductivity, W/m-K | 120 | |
| 160 |
| Thermal Expansion, µm/m-K | 21 | |
| 18 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 28 | |
| 41 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 31 | |
| 42 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 23 | |
| 30 |
| Density, g/cm3 | 8.0 | |
| 8.8 |
| Embodied Carbon, kg CO2/kg material | 2.7 | |
| 2.7 |
| Embodied Energy, MJ/kg | 46 | |
| 43 |
| Embodied Water, L/kg | 320 | |
| 320 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 27 to 240 | |
| 16 to 110 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 110 to 670 | |
| 28 to 1200 |
| Stiffness to Weight: Axial, points | 7.2 | |
| 7.2 |
| Stiffness to Weight: Bending, points | 20 | |
| 18 |
| Strength to Weight: Axial, points | 11 to 21 | |
| 8.5 to 17 |
| Strength to Weight: Bending, points | 13 to 20 | |
| 10 to 17 |
| Thermal Diffusivity, mm2/s | 40 | |
| 48 |
| Thermal Shock Resistance, points | 11 to 20 | |
| 9.5 to 19 |
Alloy Composition
| Copper (Cu), % | 59 to 63 | |
| 94 to 96 |
| Iron (Fe), % | 0 to 0.070 | |
| 0 to 0.050 |
| Lead (Pb), % | 0 to 0.3 | |
| 0 to 0.050 |
| Tin (Sn), % | 0 | |
| 0.7 to 1.3 |
| Zinc (Zn), % | 36.3 to 41 | |
| 2.1 to 5.3 |
| Residuals, % | 0 | |
| 0 to 0.5 |