Ductile Cast Iron vs. Titanium 4-4-2
Ductile cast iron belongs to the iron alloys classification, while titanium 4-4-2 belongs to the titanium alloys. There are 27 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.
For each property being compared, the top bar is ductile cast iron and the bottom bar is titanium 4-4-2.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 170 to 180 | |
| 110 |
| Elongation at Break, % | 2.1 to 20 | |
| 10 |
| Poisson's Ratio | 0.28 to 0.31 | |
| 0.32 |
| Shear Modulus, GPa | 64 to 70 | |
| 42 |
| Shear Strength, MPa | 420 to 800 | |
| 690 to 750 |
| Tensile Strength: Ultimate (UTS), MPa | 460 to 920 | |
| 1150 to 1250 |
| Tensile Strength: Yield (Proof), MPa | 310 to 670 | |
| 1030 to 1080 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 410 |
| Maximum Temperature: Mechanical, °C | 290 | |
| 310 |
| Melting Completion (Liquidus), °C | 1160 | |
| 1610 |
| Melting Onset (Solidus), °C | 1120 | |
| 1560 |
| Specific Heat Capacity, J/kg-K | 490 | |
| 540 |
| Thermal Conductivity, W/m-K | 31 to 36 | |
| 6.7 |
| Thermal Expansion, µm/m-K | 11 | |
| 8.6 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 1.9 | |
| 39 |
| Density, g/cm3 | 7.1 to 7.5 | |
| 4.7 |
| Embodied Carbon, kg CO2/kg material | 1.5 | |
| 30 |
| Embodied Energy, MJ/kg | 21 | |
| 480 |
| Embodied Water, L/kg | 43 | |
| 180 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 17 to 80 | |
| 110 to 120 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 280 to 1330 | |
| 4700 to 5160 |
| Stiffness to Weight: Axial, points | 12 to 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 to 26 | |
| 34 |
| Strength to Weight: Axial, points | 17 to 35 | |
| 68 to 74 |
| Strength to Weight: Bending, points | 18 to 29 | |
| 52 to 55 |
| Thermal Diffusivity, mm2/s | 8.9 to 10 | |
| 2.6 |
| Thermal Shock Resistance, points | 17 to 35 | |
| 86 to 93 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 3.0 to 5.0 |
| Carbon (C), % | 3.0 to 3.5 | |
| 0 to 0.080 |
| Hydrogen (H), % | 0 | |
| 0 to 0.015 |
| Iron (Fe), % | 93.7 to 95.5 | |
| 0 to 0.2 |
| Molybdenum (Mo), % | 0 | |
| 3.0 to 5.0 |
| Nitrogen (N), % | 0 | |
| 0 to 0.050 |
| Oxygen (O), % | 0 | |
| 0 to 0.25 |
| Phosphorus (P), % | 0 to 0.080 | |
| 0 |
| Silicon (Si), % | 1.5 to 2.8 | |
| 0.3 to 0.7 |
| Tin (Sn), % | 0 | |
| 1.5 to 2.5 |
| Titanium (Ti), % | 0 | |
| 85.8 to 92.2 |
| Residuals, % | 0 | |
| 0 to 0.4 |