C27200 Brass vs. C28000 Muntz Metal
Both C27200 brass and C28000 Muntz Metal are copper alloys. They have a very high 98% of their average alloy composition in common.
For each property being compared, the top bar is C27200 brass and the bottom bar is C28000 Muntz Metal.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 100 |
| Elongation at Break, % | 10 to 50 | |
| 10 to 45 |
| Poisson's Ratio | 0.31 | |
| 0.31 |
| Rockwell B Hardness | 53 to 86 | |
| 55 to 78 |
| Shear Modulus, GPa | 40 | |
| 40 |
| Shear Strength, MPa | 230 to 320 | |
| 230 to 330 |
| Tensile Strength: Ultimate (UTS), MPa | 370 to 590 | |
| 330 to 610 |
| Tensile Strength: Yield (Proof), MPa | 150 to 410 | |
| 150 to 370 |
Thermal Properties
| Latent Heat of Fusion, J/g | 170 | |
| 170 |
| Maximum Temperature: Mechanical, °C | 130 | |
| 120 |
| Melting Completion (Liquidus), °C | 920 | |
| 900 |
| Melting Onset (Solidus), °C | 870 | |
| 900 |
| Specific Heat Capacity, J/kg-K | 390 | |
| 390 |
| Thermal Conductivity, W/m-K | 120 | |
| 120 |
| Thermal Expansion, µm/m-K | 20 | |
| 21 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 28 | |
| 28 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 31 | |
| 31 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 24 | |
| 23 |
| Density, g/cm3 | 8.1 | |
| 8.0 |
| Embodied Carbon, kg CO2/kg material | 2.7 | |
| 2.7 |
| Embodied Energy, MJ/kg | 45 | |
| 46 |
| Embodied Water, L/kg | 320 | |
| 320 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 30 to 270 | |
| 27 to 240 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 110 to 810 | |
| 110 to 670 |
| Stiffness to Weight: Axial, points | 7.2 | |
| 7.2 |
| Stiffness to Weight: Bending, points | 19 | |
| 20 |
| Strength to Weight: Axial, points | 13 to 20 | |
| 11 to 21 |
| Strength to Weight: Bending, points | 14 to 19 | |
| 13 to 20 |
| Thermal Diffusivity, mm2/s | 37 | |
| 40 |
| Thermal Shock Resistance, points | 12 to 20 | |
| 11 to 20 |
Alloy Composition
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| Copper (Cu), % | 62 to 65 | |
| 59 to 63 |
| Iron (Fe), % | 0 to 0.070 | |
| 0 to 0.070 |
| Lead (Pb), % | 0 to 0.070 | |
| 0 to 0.3 |
| Zinc (Zn), % | 34.6 to 38 | |
| 36.3 to 41 |
| Residuals, % | 0 to 0.3 | |
| 0 to 0.3 |