C21000 Brass vs. C66900 Brass
Both C21000 brass and C66900 brass are copper alloys. They have 68% of their average alloy composition in common. There are 29 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 C66900 brass.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 120 |
| Elongation at Break, % | 2.9 to 50 | |
| 1.1 to 26 |
| Poisson's Ratio | 0.34 | |
| 0.32 |
| Rockwell B Hardness | 36 to 73 | |
| 65 to 100 |
| Rockwell Superficial 30T Hardness | 44 to 68 | |
| 60 to 88 |
| Shear Modulus, GPa | 43 | |
| 45 |
| Shear Strength, MPa | 180 to 280 | |
| 290 to 440 |
| Tensile Strength: Ultimate (UTS), MPa | 240 to 450 | |
| 460 to 770 |
| Tensile Strength: Yield (Proof), MPa | 69 to 440 | |
| 330 to 760 |
Thermal Properties
| Latent Heat of Fusion, J/g | 200 | |
| 190 |
| Maximum Temperature: Mechanical, °C | 190 | |
| 150 |
| Melting Completion (Liquidus), °C | 1070 | |
| 860 |
| Melting Onset (Solidus), °C | 1050 | |
| 850 |
| Specific Heat Capacity, J/kg-K | 390 | |
| 400 |
| Thermal Expansion, µm/m-K | 18 | |
| 20 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 56 | |
| 3.4 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 57 | |
| 3.8 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 30 | |
| 23 |
| Density, g/cm3 | 8.8 | |
| 8.2 |
| Embodied Carbon, kg CO2/kg material | 2.6 | |
| 2.8 |
| Embodied Energy, MJ/kg | 42 | |
| 46 |
| Embodied Water, L/kg | 310 | |
| 310 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 13 to 100 | |
| 4.6 to 200 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 21 to 830 | |
| 460 to 2450 |
| Stiffness to Weight: Axial, points | 7.2 | |
| 8.1 |
| Stiffness to Weight: Bending, points | 18 | |
| 20 |
| Strength to Weight: Axial, points | 7.4 to 14 | |
| 15 to 26 |
| Strength to Weight: Bending, points | 9.6 to 15 | |
| 16 to 23 |
| Thermal Shock Resistance, points | 8.1 to 15 | |
| 14 to 23 |
Alloy Composition
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| Copper (Cu), % | 94 to 96 | |
| 62.5 to 64.5 |
| Iron (Fe), % | 0 to 0.050 | |
| 0 to 0.25 |
| Lead (Pb), % | 0 to 0.030 | |
| 0 to 0.050 |
| Manganese (Mn), % | 0 | |
| 11.5 to 12.5 |
| Zinc (Zn), % | 3.7 to 6.0 | |
| 22.5 to 26 |
| Residuals, % | 0 to 0.2 | |
| 0 to 0.2 |