Grade 5 Titanium vs. Austempered Cast Iron
Grade 5 titanium belongs to the titanium alloys classification, while austempered cast iron belongs to the iron alloys. There are 25 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.
For each property being compared, the top bar is grade 5 titanium and the bottom bar is austempered cast iron.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 180 |
| Elongation at Break, % | 8.6 to 11 | |
| 1.1 to 13 |
| Poisson's Ratio | 0.32 | |
| 0.29 |
| Shear Modulus, GPa | 40 | |
| 62 to 69 |
| Tensile Strength: Ultimate (UTS), MPa | 1000 to 1190 | |
| 860 to 1800 |
| Tensile Strength: Yield (Proof), MPa | 910 to 1110 | |
| 560 to 1460 |
Thermal Properties
| Latent Heat of Fusion, J/g | 410 | |
| 280 |
| Melting Completion (Liquidus), °C | 1610 | |
| 1380 |
| Melting Onset (Solidus), °C | 1650 | |
| 1340 |
| Specific Heat Capacity, J/kg-K | 560 | |
| 490 |
| Thermal Conductivity, W/m-K | 6.8 | |
| 42 |
| Thermal Expansion, µm/m-K | 8.9 | |
| 13 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 36 | |
| 2.9 |
| Density, g/cm3 | 4.4 | |
| 7.5 |
| Embodied Carbon, kg CO2/kg material | 38 | |
| 1.8 |
| Embodied Energy, MJ/kg | 610 | |
| 25 |
| Embodied Water, L/kg | 200 | |
| 48 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 100 to 110 | |
| 19 to 95 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 3980 to 5880 | |
| 880 to 3970 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 35 | |
| 25 |
| Strength to Weight: Axial, points | 62 to 75 | |
| 32 to 66 |
| Strength to Weight: Bending, points | 50 to 56 | |
| 27 to 44 |
| Thermal Diffusivity, mm2/s | 2.7 | |
| 11 |
| Thermal Shock Resistance, points | 76 to 91 | |
| 25 to 53 |
Alloy Composition
| Aluminum (Al), % | 5.5 to 6.8 | |
| 0 to 0.050 |
| Arsenic (As), % | 0 | |
| 0 to 0.020 |
| Carbon (C), % | 0 to 0.080 | |
| 3.4 to 3.8 |
| Chromium (Cr), % | 0 | |
| 0 to 0.1 |
| Copper (Cu), % | 0 | |
| 0 to 0.8 |
| Hydrogen (H), % | 0 to 0.015 | |
| 0 |
| Iron (Fe), % | 0 to 0.4 | |
| 89.6 to 94 |
| Magnesium (Mg), % | 0 | |
| 0 to 0.040 |
| Manganese (Mn), % | 0 | |
| 0.3 to 0.4 |
| Molybdenum (Mo), % | 0 | |
| 0 to 0.3 |
| Nickel (Ni), % | 0 | |
| 0 to 2.0 |
| Nitrogen (N), % | 0 to 0.050 | |
| 0 |
| Oxygen (O), % | 0 to 0.2 | |
| 0 |
| Phosphorus (P), % | 0 | |
| 0 to 0.040 |
| Selenium (Se), % | 0 | |
| 0 to 0.030 |
| Silicon (Si), % | 0 | |
| 2.3 to 2.7 |
| Sulfur (S), % | 0 | |
| 0 to 0.020 |
| Tin (Sn), % | 0 | |
| 0 to 0.020 |
| Titanium (Ti), % | 87.4 to 91 | |
| 0 |
| Vanadium (V), % | 3.5 to 4.5 | |
| 0 to 0.1 |
| Yttrium (Y), % | 0 to 0.0050 | |
| 0 |
| Residuals, % | 0 to 0.4 | |
| 0 |