Austenitic Nodular Cast Iron vs. Grade 21 Titanium
Austenitic nodular cast iron belongs to the iron alloys classification, while grade 21 titanium belongs to the titanium alloys. There are 23 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 austenitic nodular cast iron and the bottom bar is grade 21 titanium.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 180 to 190 | |
| 140 |
| Elongation at Break, % | 6.8 to 34 | |
| 9.0 to 17 |
| Poisson's Ratio | 0.29 to 0.3 | |
| 0.32 |
| Shear Modulus, GPa | 70 to 72 | |
| 51 |
| Tensile Strength: Ultimate (UTS), MPa | 430 to 500 | |
| 890 to 1340 |
| Tensile Strength: Yield (Proof), MPa | 190 to 240 | |
| 870 to 1170 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 to 350 | |
| 410 |
| Melting Completion (Liquidus), °C | 1340 to 1400 | |
| 1740 |
| Melting Onset (Solidus), °C | 1300 to 1360 | |
| 1690 |
| Specific Heat Capacity, J/kg-K | 470 to 490 | |
| 500 |
| Thermal Expansion, µm/m-K | 13 to 14 | |
| 7.1 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 16 to 25 | |
| 60 |
| Density, g/cm3 | 7.7 to 8.0 | |
| 5.4 |
| Embodied Carbon, kg CO2/kg material | 3.5 to 4.9 | |
| 32 |
| Embodied Energy, MJ/kg | 48 to 68 | |
| 490 |
| Embodied Water, L/kg | 91 to 120 | |
| 180 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 24 to 140 | |
| 110 to 180 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 98 to 160 | |
| 2760 to 5010 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 to 25 | |
| 32 |
| Strength to Weight: Axial, points | 15 to 18 | |
| 46 to 69 |
| Strength to Weight: Bending, points | 16 to 18 | |
| 38 to 50 |
| Thermal Shock Resistance, points | 12 to 15 | |
| 66 to 100 |