C27400 Brass vs. ZA-27
C27400 brass belongs to the copper alloys classification, while ZA-27 belongs to the zinc alloys. They have a modest 40% of their average alloy composition in common, which, by itself, doesn't mean much. There are 25 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.
For each property being compared, the top bar is C27400 brass and the bottom bar is ZA-27.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 78 |
| Poisson's Ratio | 0.31 | |
| 0.27 |
| Rockwell B Hardness | 53 to 91 | |
| 60 to 72 |
| Shear Modulus, GPa | 40 | |
| 31 |
| Tensile Strength: Ultimate (UTS), MPa | 370 to 650 | |
| 400 to 430 |
Thermal Properties
| Latent Heat of Fusion, J/g | 170 | |
| 130 |
| Maximum Temperature: Mechanical, °C | 120 | |
| 120 |
| Melting Completion (Liquidus), °C | 920 | |
| 480 |
| Melting Onset (Solidus), °C | 870 | |
| 380 |
| Specific Heat Capacity, J/kg-K | 390 | |
| 530 |
| Thermal Conductivity, W/m-K | 120 | |
| 130 |
| Thermal Expansion, µm/m-K | 21 | |
| 26 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 28 | |
| 30 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 31 | |
| 53 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 23 | |
| 11 |
| Density, g/cm3 | 8.0 | |
| 5.0 |
| Embodied Carbon, kg CO2/kg material | 2.7 | |
| 4.2 |
| Embodied Energy, MJ/kg | 45 | |
| 80 |
| Embodied Water, L/kg | 320 | |
| 570 |
Common Calculations
| Stiffness to Weight: Axial, points | 7.2 | |
| 8.6 |
| Stiffness to Weight: Bending, points | 20 | |
| 28 |
| Strength to Weight: Axial, points | 13 to 23 | |
| 22 to 24 |
| Strength to Weight: Bending, points | 14 to 21 | |
| 24 to 25 |
| Thermal Diffusivity, mm2/s | 37 | |
| 47 |
| Thermal Shock Resistance, points | 12 to 22 | |
| 14 to 15 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 25 to 28 |
| Cadmium (Cd), % | 0 | |
| 0 to 0.0060 |
| Copper (Cu), % | 61 to 64 | |
| 2.0 to 2.5 |
| Iron (Fe), % | 0 to 0.1 | |
| 0 to 0.1 |
| Lead (Pb), % | 0 to 0.050 | |
| 0 to 0.0060 |
| Magnesium (Mg), % | 0 | |
| 0.010 to 0.020 |
| Nickel (Ni), % | 0 | |
| 0 to 0.020 |
| Silicon (Si), % | 0 | |
| 0 to 0.080 |
| Tin (Sn), % | 0 | |
| 0 to 0.0030 |
| Zinc (Zn), % | 35.6 to 39 | |
| 69.3 to 73 |
| Residuals, % | 0 to 0.3 | |
| 0 |