Automotive Grey Cast Iron vs. Grade 29 Titanium
Automotive grey cast iron belongs to the iron alloys classification, while grade 29 titanium belongs to the titanium alloys. There are 27 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 automotive grey cast iron and the bottom bar is grade 29 titanium.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 180 | |
| 110 |
| Elongation at Break, % | 9.6 to 14 | |
| 6.8 to 11 |
| Poisson's Ratio | 0.29 | |
| 0.32 |
| Shear Modulus, GPa | 69 to 70 | |
| 40 |
| Tensile Strength: Ultimate (UTS), MPa | 140 to 290 | |
| 930 to 940 |
| Tensile Strength: Yield (Proof), MPa | 94 to 200 | |
| 850 to 870 |
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 | |
| 560 |
| Thermal Conductivity, W/m-K | 41 to 43 | |
| 7.3 |
| Thermal Expansion, µm/m-K | 12 to 14 | |
| 9.3 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.4 to 7.6 | |
| 1.0 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.8 to 9.1 | |
| 2.0 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 1.9 to 3.0 | |
| 36 |
| Density, g/cm3 | 7.5 to 7.6 | |
| 4.5 |
| Embodied Carbon, kg CO2/kg material | 1.5 to 1.7 | |
| 39 |
| Embodied Energy, MJ/kg | 21 to 24 | |
| 640 |
| Embodied Water, L/kg | 44 to 51 | |
| 410 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 18 to 25 | |
| 62 to 100 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 25 to 110 | |
| 3420 to 3540 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 35 |
| Strength to Weight: Axial, points | 5.2 to 11 | |
| 58 to 59 |
| Strength to Weight: Bending, points | 8.0 to 13 | |
| 47 to 48 |
| Thermal Diffusivity, mm2/s | 11 to 12 | |
| 2.9 |
| Thermal Shock Resistance, points | 4.2 to 8.6 | |
| 68 to 69 |