Ductile Cast Iron vs. C68800 Brass
Ductile cast iron belongs to the iron alloys classification, while C68800 brass belongs to the copper alloys. There are 29 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 ductile cast iron and the bottom bar is C68800 brass.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 170 to 180 | |
| 110 |
| Elongation at Break, % | 2.1 to 20 | |
| 2.0 to 36 |
| Poisson's Ratio | 0.28 to 0.31 | |
| 0.32 |
| Shear Modulus, GPa | 64 to 70 | |
| 41 |
| Shear Strength, MPa | 420 to 800 | |
| 380 to 510 |
| Tensile Strength: Ultimate (UTS), MPa | 460 to 920 | |
| 570 to 890 |
| Tensile Strength: Yield (Proof), MPa | 310 to 670 | |
| 390 to 790 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 190 |
| Maximum Temperature: Mechanical, °C | 290 | |
| 160 |
| Melting Completion (Liquidus), °C | 1160 | |
| 960 |
| Melting Onset (Solidus), °C | 1120 | |
| 950 |
| Specific Heat Capacity, J/kg-K | 490 | |
| 400 |
| Thermal Conductivity, W/m-K | 31 to 36 | |
| 40 |
| Thermal Expansion, µm/m-K | 11 | |
| 19 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.4 | |
| 18 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.8 to 9.4 | |
| 20 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 1.9 | |
| 26 |
| Density, g/cm3 | 7.1 to 7.5 | |
| 8.2 |
| Embodied Carbon, kg CO2/kg material | 1.5 | |
| 2.8 |
| Embodied Energy, MJ/kg | 21 | |
| 48 |
| Embodied Water, L/kg | 43 | |
| 350 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 17 to 80 | |
| 16 to 180 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 280 to 1330 | |
| 710 to 2860 |
| Stiffness to Weight: Axial, points | 12 to 14 | |
| 7.3 |
| Stiffness to Weight: Bending, points | 24 to 26 | |
| 19 |
| Strength to Weight: Axial, points | 17 to 35 | |
| 19 to 30 |
| Strength to Weight: Bending, points | 18 to 29 | |
| 19 to 25 |
| Thermal Diffusivity, mm2/s | 8.9 to 10 | |
| 12 |
| Thermal Shock Resistance, points | 17 to 35 | |
| 19 to 30 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 3.0 to 3.8 |
| Carbon (C), % | 3.0 to 3.5 | |
| 0 |
| Cobalt (Co), % | 0 | |
| 0.25 to 0.55 |
| Copper (Cu), % | 0 | |
| 70.8 to 75.5 |
| Iron (Fe), % | 93.7 to 95.5 | |
| 0 to 0.2 |
| Lead (Pb), % | 0 | |
| 0 to 0.050 |
| Phosphorus (P), % | 0 to 0.080 | |
| 0 |
| Silicon (Si), % | 1.5 to 2.8 | |
| 0 |
| Zinc (Zn), % | 0 | |
| 21.3 to 24.1 |
| Residuals, % | 0 | |
| 0 to 0.5 |