C21000 Brass vs. C61000 Bronze
Both C21000 brass and C61000 bronze are copper alloys. They have a moderately high 92% 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 C21000 brass and the bottom bar is C61000 bronze.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 110 |
| Elongation at Break, % | 2.9 to 50 | |
| 29 to 50 |
| Poisson's Ratio | 0.34 | |
| 0.34 |
| Rockwell B Hardness | 36 to 73 | |
| 60 to 85 |
| Shear Modulus, GPa | 43 | |
| 42 |
| Shear Strength, MPa | 180 to 280 | |
| 280 to 300 |
| Tensile Strength: Ultimate (UTS), MPa | 240 to 450 | |
| 390 to 460 |
| Tensile Strength: Yield (Proof), MPa | 69 to 440 | |
| 150 to 190 |
Thermal Properties
| Latent Heat of Fusion, J/g | 200 | |
| 220 |
| Maximum Temperature: Mechanical, °C | 190 | |
| 210 |
| Melting Completion (Liquidus), °C | 1070 | |
| 1040 |
| Melting Onset (Solidus), °C | 1050 | |
| 990 |
| Specific Heat Capacity, J/kg-K | 390 | |
| 420 |
| Thermal Conductivity, W/m-K | 230 | |
| 69 |
| Thermal Expansion, µm/m-K | 18 | |
| 18 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 56 | |
| 15 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 57 | |
| 16 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 30 | |
| 29 |
| Density, g/cm3 | 8.8 | |
| 8.5 |
| Embodied Carbon, kg CO2/kg material | 2.6 | |
| 3.0 |
| Embodied Energy, MJ/kg | 42 | |
| 49 |
| Embodied Water, L/kg | 310 | |
| 370 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 13 to 100 | |
| 110 to 160 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 21 to 830 | |
| 100 to 160 |
| Stiffness to Weight: Axial, points | 7.2 | |
| 7.4 |
| Stiffness to Weight: Bending, points | 18 | |
| 19 |
| Strength to Weight: Axial, points | 7.4 to 14 | |
| 13 to 15 |
| Strength to Weight: Bending, points | 9.6 to 15 | |
| 14 to 16 |
| Thermal Diffusivity, mm2/s | 69 | |
| 19 |
| Thermal Shock Resistance, points | 8.1 to 15 | |
| 14 to 16 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 6.0 to 8.5 |
| Copper (Cu), % | 94 to 96 | |
| 90.2 to 94 |
| Iron (Fe), % | 0 to 0.050 | |
| 0 to 0.5 |
| Lead (Pb), % | 0 to 0.030 | |
| 0 to 0.020 |
| Silicon (Si), % | 0 | |
| 0 to 0.1 |
| Zinc (Zn), % | 3.7 to 6.0 | |
| 0 to 0.2 |
| Residuals, % | 0 | |
| 0 to 0.5 |