C21000 Brass vs. C68000 Brass
Both C21000 brass and C68000 brass are copper alloys. They have 63% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.
For each property being compared, the top bar is C21000 brass and the bottom bar is C68000 brass.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 100 |
| Elongation at Break, % | 2.9 to 50 | |
| 27 |
| Poisson's Ratio | 0.34 | |
| 0.3 |
| Shear Modulus, GPa | 43 | |
| 40 |
| Tensile Strength: Ultimate (UTS), MPa | 240 to 450 | |
| 390 |
| Tensile Strength: Yield (Proof), MPa | 69 to 440 | |
| 140 |
Thermal Properties
| Latent Heat of Fusion, J/g | 200 | |
| 170 |
| Maximum Temperature: Mechanical, °C | 190 | |
| 120 |
| Melting Completion (Liquidus), °C | 1070 | |
| 880 |
| Melting Onset (Solidus), °C | 1050 | |
| 870 |
| Specific Heat Capacity, J/kg-K | 390 | |
| 390 |
| Thermal Conductivity, W/m-K | 230 | |
| 96 |
| Thermal Expansion, µm/m-K | 18 | |
| 21 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 30 | |
| 23 |
| Density, g/cm3 | 8.8 | |
| 8.0 |
| Embodied Carbon, kg CO2/kg material | 2.6 | |
| 2.8 |
| Embodied Energy, MJ/kg | 42 | |
| 48 |
| Embodied Water, L/kg | 310 | |
| 330 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 13 to 100 | |
| 82 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 21 to 830 | |
| 95 |
| Stiffness to Weight: Axial, points | 7.2 | |
| 7.3 |
| Stiffness to Weight: Bending, points | 18 | |
| 20 |
| Strength to Weight: Axial, points | 7.4 to 14 | |
| 14 |
| Strength to Weight: Bending, points | 9.6 to 15 | |
| 15 |
| Thermal Diffusivity, mm2/s | 69 | |
| 31 |
| Thermal Shock Resistance, points | 8.1 to 15 | |
| 13 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 0 to 0.010 |
| Copper (Cu), % | 94 to 96 | |
| 56 to 60 |
| Iron (Fe), % | 0 to 0.050 | |
| 0.25 to 1.3 |
| Lead (Pb), % | 0 to 0.030 | |
| 0 to 0.050 |
| Manganese (Mn), % | 0 | |
| 0.010 to 0.5 |
| Nickel (Ni), % | 0 | |
| 0.2 to 0.8 |
| Silicon (Si), % | 0 | |
| 0.040 to 0.15 |
| Tin (Sn), % | 0 | |
| 0.75 to 1.1 |
| Zinc (Zn), % | 3.7 to 6.0 | |
| 35.6 to 42.8 |
| Residuals, % | 0 | |
| 0 to 0.5 |