C68800 Brass vs. C99400 Brass
Both C68800 brass and C99400 brass are copper alloys. They have 77% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.
For each property being compared, the top bar is C68800 brass and the bottom bar is C99400 brass.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 120 |
| Poisson's Ratio | 0.32 | |
| 0.34 |
| Shear Modulus, GPa | 41 | |
| 44 |
| Tensile Strength: Ultimate (UTS), MPa | 570 to 890 | |
| 460 to 550 |
| Tensile Strength: Yield (Proof), MPa | 390 to 790 | |
| 230 to 370 |
Thermal Properties
| Latent Heat of Fusion, J/g | 190 | |
| 230 |
| Maximum Temperature: Mechanical, °C | 160 | |
| 200 |
| Melting Completion (Liquidus), °C | 960 | |
| 1070 |
| Melting Onset (Solidus), °C | 950 | |
| 1020 |
| Specific Heat Capacity, J/kg-K | 400 | |
| 400 |
| Thermal Expansion, µm/m-K | 19 | |
| 17 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 18 | |
| 17 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 20 | |
| 17 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 26 | |
| 30 |
| Density, g/cm3 | 8.2 | |
| 8.7 |
| Embodied Carbon, kg CO2/kg material | 2.8 | |
| 2.8 |
| Embodied Energy, MJ/kg | 48 | |
| 45 |
| Embodied Water, L/kg | 350 | |
| 310 |
Common Calculations
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 710 to 2860 | |
| 230 to 590 |
| Stiffness to Weight: Axial, points | 7.3 | |
| 7.5 |
| Stiffness to Weight: Bending, points | 19 | |
| 19 |
| Strength to Weight: Axial, points | 19 to 30 | |
| 15 to 17 |
| Strength to Weight: Bending, points | 19 to 25 | |
| 15 to 17 |
| Thermal Shock Resistance, points | 19 to 30 | |
| 16 to 19 |
Alloy Composition
| Aluminum (Al), % | 3.0 to 3.8 | |
| 0.5 to 2.0 |
| Cobalt (Co), % | 0.25 to 0.55 | |
| 0 |
| Copper (Cu), % | 70.8 to 75.5 | |
| 83.5 to 96.5 |
| Iron (Fe), % | 0 to 0.2 | |
| 1.0 to 3.0 |
| Lead (Pb), % | 0 to 0.050 | |
| 0 to 0.25 |
| Manganese (Mn), % | 0 | |
| 0 to 0.5 |
| Nickel (Ni), % | 0 | |
| 1.0 to 3.5 |
| Silicon (Si), % | 0 | |
| 0.5 to 2.0 |
| Zinc (Zn), % | 21.3 to 24.1 | |
| 0.5 to 5.0 |
| Residuals, % | 0 | |
| 0 to 0.3 |