C68700 Brass vs. C38000 Brass
Both C68700 brass and C38000 brass are copper alloys. They have 78% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.
For each property being compared, the top bar is C68700 brass and the bottom bar is C38000 brass.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 100 |
| Poisson's Ratio | 0.32 | |
| 0.31 |
| Shear Modulus, GPa | 41 | |
| 39 |
| Tensile Strength: Ultimate (UTS), MPa | 390 | |
| 380 |
| Tensile Strength: Yield (Proof), MPa | 140 | |
| 120 |
Thermal Properties
| Latent Heat of Fusion, J/g | 190 | |
| 170 |
| Maximum Temperature: Mechanical, °C | 160 | |
| 110 |
| Melting Completion (Liquidus), °C | 970 | |
| 800 |
| Melting Onset (Solidus), °C | 930 | |
| 760 |
| Specific Heat Capacity, J/kg-K | 400 | |
| 380 |
| Thermal Conductivity, W/m-K | 100 | |
| 110 |
| Thermal Expansion, µm/m-K | 19 | |
| 21 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 26 | |
| 22 |
| Density, g/cm3 | 8.3 | |
| 8.0 |
| Embodied Carbon, kg CO2/kg material | 2.8 | |
| 2.7 |
| Embodied Energy, MJ/kg | 46 | |
| 46 |
| Embodied Water, L/kg | 340 | |
| 330 |
Common Calculations
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 90 | |
| 74 |
| Stiffness to Weight: Axial, points | 7.3 | |
| 7.1 |
| Stiffness to Weight: Bending, points | 19 | |
| 19 |
| Strength to Weight: Axial, points | 13 | |
| 13 |
| Strength to Weight: Bending, points | 14 | |
| 14 |
| Thermal Diffusivity, mm2/s | 30 | |
| 37 |
| Thermal Shock Resistance, points | 13 | |
| 13 |
Alloy Composition
| Aluminum (Al), % | 1.8 to 2.5 | |
| 0 to 0.5 |
| Arsenic (As), % | 0.020 to 0.1 | |
| 0 |
| Copper (Cu), % | 76 to 79 | |
| 55 to 60 |
| Iron (Fe), % | 0 to 0.060 | |
| 0 to 0.35 |
| Lead (Pb), % | 0 to 0.070 | |
| 1.5 to 2.5 |
| Tin (Sn), % | 0 | |
| 0 to 0.3 |
| Zinc (Zn), % | 17.8 to 22.2 | |
| 35.9 to 43.5 |
| Residuals, % | 0 | |
| 0 to 0.5 |