C21000 Brass vs. C12200 Copper
Both C21000 brass and C12200 copper are copper alloys. They have a very high 95% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.
For each property being compared, the top bar is C21000 brass and the bottom bar is C12200 copper.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 120 |
| Elongation at Break, % | 2.9 to 50 | |
| 3.2 to 50 |
| Poisson's Ratio | 0.34 | |
| 0.34 |
| Rockwell Superficial 30T Hardness | 44 to 68 | |
| 27 to 70 |
| Shear Modulus, GPa | 43 | |
| 43 |
| Shear Strength, MPa | 180 to 280 | |
| 150 to 240 |
| Tensile Strength: Ultimate (UTS), MPa | 240 to 450 | |
| 220 to 410 |
| Tensile Strength: Yield (Proof), MPa | 69 to 440 | |
| 69 to 400 |
Thermal Properties
| Latent Heat of Fusion, J/g | 200 | |
| 210 |
| Maximum Temperature: Mechanical, °C | 190 | |
| 200 |
| Melting Completion (Liquidus), °C | 1070 | |
| 1080 |
| Melting Onset (Solidus), °C | 1050 | |
| 1030 |
| Specific Heat Capacity, J/kg-K | 390 | |
| 390 |
| Thermal Conductivity, W/m-K | 230 | |
| 340 |
| Thermal Expansion, µm/m-K | 18 | |
| 17 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 56 | |
| 85 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 57 | |
| 85 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 30 | |
| 31 |
| Density, g/cm3 | 8.8 | |
| 9.0 |
| Embodied Carbon, kg CO2/kg material | 2.6 | |
| 2.6 |
| Embodied Energy, MJ/kg | 42 | |
| 41 |
| Embodied Water, L/kg | 310 | |
| 310 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 13 to 100 | |
| 11 to 91 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 21 to 830 | |
| 21 to 690 |
| Stiffness to Weight: Axial, points | 7.2 | |
| 7.2 |
| Stiffness to Weight: Bending, points | 18 | |
| 18 |
| Strength to Weight: Axial, points | 7.4 to 14 | |
| 6.9 to 13 |
| Strength to Weight: Bending, points | 9.6 to 15 | |
| 9.1 to 14 |
| Thermal Diffusivity, mm2/s | 69 | |
| 98 |
| Thermal Shock Resistance, points | 8.1 to 15 | |
| 7.9 to 15 |
Alloy Composition
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| Copper (Cu), % | 94 to 96 | |
| 99.9 to 99.985 |
| Iron (Fe), % | 0 to 0.050 | |
| 0 |
| Lead (Pb), % | 0 to 0.030 | |
| 0 |
| Phosphorus (P), % | 0 | |
| 0.015 to 0.040 |
| Zinc (Zn), % | 3.7 to 6.0 | |
| 0 |
| Residuals, % | 0 to 0.2 | |
| 0 |