CR021A Copper vs. C68300 Brass
Both CR021A copper and C68300 brass are copper alloys. They have 61% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.
For each property being compared, the top bar is CR021A copper and the bottom bar is C68300 brass.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 120 | |
| 100 |
| Elongation at Break, % | 15 | |
| 15 |
| Poisson's Ratio | 0.34 | |
| 0.31 |
| Shear Modulus, GPa | 43 | |
| 40 |
| Tensile Strength: Ultimate (UTS), MPa | 230 | |
| 430 |
| Tensile Strength: Yield (Proof), MPa | 140 | |
| 260 |
Thermal Properties
| Latent Heat of Fusion, J/g | 210 | |
| 180 |
| Maximum Temperature: Mechanical, °C | 200 | |
| 120 |
| Melting Completion (Liquidus), °C | 1090 | |
| 900 |
| Melting Onset (Solidus), °C | 1040 | |
| 890 |
| Specific Heat Capacity, J/kg-K | 390 | |
| 390 |
| Thermal Conductivity, W/m-K | 380 | |
| 120 |
| Thermal Expansion, µm/m-K | 17 | |
| 20 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 31 | |
| 23 |
| Density, g/cm3 | 9.0 | |
| 8.0 |
| Embodied Carbon, kg CO2/kg material | 2.6 | |
| 2.8 |
| Embodied Energy, MJ/kg | 41 | |
| 46 |
| Embodied Water, L/kg | 320 | |
| 340 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 31 | |
| 56 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 83 | |
| 330 |
| Stiffness to Weight: Axial, points | 7.2 | |
| 7.3 |
| Stiffness to Weight: Bending, points | 18 | |
| 20 |
| Strength to Weight: Axial, points | 7.1 | |
| 15 |
| Strength to Weight: Bending, points | 9.3 | |
| 16 |
| Thermal Diffusivity, mm2/s | 110 | |
| 38 |
| Thermal Shock Resistance, points | 8.1 | |
| 14 |
Alloy Composition
| Antimony (Sb), % | 0 | |
| 0.3 to 1.0 |
| Bismuth (Bi), % | 0 to 0.00050 | |
| 0 |
| Cadmium (Cd), % | 0 | |
| 0 to 0.010 |
| Copper (Cu), % | 99.95 to 99.998 | |
| 59 to 63 |
| Lead (Pb), % | 0 to 0.0050 | |
| 0 to 0.090 |
| Phosphorus (P), % | 0.0020 to 0.0070 | |
| 0 |
| Silicon (Si), % | 0 | |
| 0.3 to 1.0 |
| Silver (Ag), % | 0 to 0.015 | |
| 0 |
| Tin (Sn), % | 0 | |
| 0.050 to 0.2 |
| Zinc (Zn), % | 0 | |
| 34.2 to 40.4 |
| Residuals, % | 0 | |
| 0 to 0.5 |