Annealed Grade 18 Titanium vs. Annealed 250 Maraging Steel
Annealed grade 18 titanium belongs to the titanium alloys classification, while annealed 250 maraging steel belongs to the iron alloys. There are 23 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.
For each property being compared, the top bar is annealed grade 18 titanium and the bottom bar is annealed 250 maraging steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 190 |
| Elongation at Break, % | 17 | |
| 17 |
| Poisson's Ratio | 0.32 | |
| 0.3 |
| Shear Modulus, GPa | 40 | |
| 75 |
| Shear Strength, MPa | 440 | |
| 600 |
| Tensile Strength: Ultimate (UTS), MPa | 710 | |
| 970 |
| Tensile Strength: Yield (Proof), MPa | 540 | |
| 660 |
Thermal Properties
| Latent Heat of Fusion, J/g | 410 | |
| 270 |
| Melting Completion (Liquidus), °C | 1640 | |
| 1480 |
| Melting Onset (Solidus), °C | 1590 | |
| 1430 |
| Specific Heat Capacity, J/kg-K | 550 | |
| 450 |
| Thermal Expansion, µm/m-K | 9.9 | |
| 12 |
Otherwise Unclassified Properties
| Density, g/cm3 | 4.5 | |
| 8.2 |
| Embodied Carbon, kg CO2/kg material | 41 | |
| 4.9 |
| Embodied Energy, MJ/kg | 670 | |
| 65 |
| Embodied Water, L/kg | 270 | |
| 140 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 110 | |
| 150 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1380 | |
| 1120 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 35 | |
| 23 |
| Strength to Weight: Axial, points | 44 | |
| 33 |
| Strength to Weight: Bending, points | 39 | |
| 26 |
| Thermal Shock Resistance, points | 48 | |
| 29 |
Alloy Composition
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| Aluminum (Al), % | 2.5 to 3.5 | |
| 0.050 to 0.15 |
| Boron (B), % | 0 | |
| 0 to 0.0030 |
| Calcium (Ca), % | 0 | |
| 0 to 0.050 |
| Carbon (C), % | 0 to 0.080 | |
| 0 to 0.030 |
| Cobalt (Co), % | 0 | |
| 7.0 to 8.5 |
| Hydrogen (H), % | 0 to 0.015 | |
| 0 |
| Iron (Fe), % | 0 to 0.25 | |
| 66.3 to 71.1 |
| Manganese (Mn), % | 0 | |
| 0 to 0.1 |
| Molybdenum (Mo), % | 0 | |
| 4.6 to 5.2 |
| Nickel (Ni), % | 0 | |
| 17 to 19 |
| Nitrogen (N), % | 0 to 0.030 | |
| 0 |
| Oxygen (O), % | 0 to 0.15 | |
| 0 |
| Palladium (Pd), % | 0.040 to 0.080 | |
| 0 |
| Phosphorus (P), % | 0 | |
| 0 to 0.010 |
| Silicon (Si), % | 0 | |
| 0 to 0.1 |
| Sulfur (S), % | 0 | |
| 0 to 0.010 |
| Titanium (Ti), % | 92.5 to 95.5 | |
| 0.3 to 0.5 |
| Vanadium (V), % | 2.0 to 3.0 | |
| 0 |
| Zirconium (Zr), % | 0 | |
| 0 to 0.020 |
| Residuals, % | 0 to 0.4 | |
| 0 |