Automotive Grey Cast Iron vs. Titanium 4-4-2
Automotive grey cast iron belongs to the iron alloys classification, while titanium 4-4-2 belongs to the titanium alloys. There are 25 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 automotive grey cast iron and the bottom bar is titanium 4-4-2.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 180 | |
| 110 |
| Elongation at Break, % | 9.6 to 14 | |
| 10 |
| Poisson's Ratio | 0.29 | |
| 0.32 |
| Shear Modulus, GPa | 69 to 70 | |
| 42 |
| Tensile Strength: Ultimate (UTS), MPa | 140 to 290 | |
| 1150 to 1250 |
| Tensile Strength: Yield (Proof), MPa | 94 to 200 | |
| 1030 to 1080 |
Thermal Properties
| Latent Heat of Fusion, J/g | 260 to 280 | |
| 410 |
| Melting Completion (Liquidus), °C | 1380 to 1390 | |
| 1610 |
| Melting Onset (Solidus), °C | 1340 to 1350 | |
| 1560 |
| Specific Heat Capacity, J/kg-K | 490 | |
| 540 |
| Thermal Conductivity, W/m-K | 41 to 43 | |
| 6.7 |
| Thermal Expansion, µm/m-K | 12 to 14 | |
| 8.6 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 1.9 to 3.0 | |
| 39 |
| Density, g/cm3 | 7.5 to 7.6 | |
| 4.7 |
| Embodied Carbon, kg CO2/kg material | 1.5 to 1.7 | |
| 30 |
| Embodied Energy, MJ/kg | 21 to 24 | |
| 480 |
| Embodied Water, L/kg | 44 to 51 | |
| 180 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 18 to 25 | |
| 110 to 120 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 25 to 110 | |
| 4700 to 5160 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 34 |
| Strength to Weight: Axial, points | 5.2 to 11 | |
| 68 to 74 |
| Strength to Weight: Bending, points | 8.0 to 13 | |
| 52 to 55 |
| Thermal Diffusivity, mm2/s | 11 to 12 | |
| 2.6 |
| Thermal Shock Resistance, points | 4.2 to 8.6 | |
| 86 to 93 |