Grade 18 Titanium vs. EN 1.7383 Steel
Grade 18 titanium belongs to the titanium alloys classification, while EN 1.7383 steel belongs to the iron alloys. There are 29 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 grade 18 titanium and the bottom bar is EN 1.7383 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 190 |
| Elongation at Break, % | 11 to 17 | |
| 20 to 23 |
| Fatigue Strength, MPa | 330 to 480 | |
| 210 to 270 |
| Poisson's Ratio | 0.32 | |
| 0.29 |
| Shear Modulus, GPa | 40 | |
| 74 |
| Shear Strength, MPa | 420 to 590 | |
| 350 to 380 |
| Tensile Strength: Ultimate (UTS), MPa | 690 to 980 | |
| 560 to 610 |
| Tensile Strength: Yield (Proof), MPa | 540 to 810 | |
| 300 to 400 |
Thermal Properties
| Latent Heat of Fusion, J/g | 410 | |
| 260 |
| Maximum Temperature: Mechanical, °C | 330 | |
| 460 |
| Melting Completion (Liquidus), °C | 1640 | |
| 1470 |
| Melting Onset (Solidus), °C | 1590 | |
| 1430 |
| Specific Heat Capacity, J/kg-K | 550 | |
| 470 |
| Thermal Conductivity, W/m-K | 8.3 | |
| 39 |
| Thermal Expansion, µm/m-K | 9.9 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 1.3 | |
| 7.7 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.7 | |
| 8.8 |
Otherwise Unclassified Properties
| Density, g/cm3 | 4.5 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 41 | |
| 1.8 |
| Embodied Energy, MJ/kg | 670 | |
| 23 |
| Embodied Water, L/kg | 270 | |
| 59 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 87 to 110 | |
| 110 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1380 to 3110 | |
| 240 to 420 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 35 | |
| 24 |
| Strength to Weight: Axial, points | 43 to 61 | |
| 20 to 22 |
| Strength to Weight: Bending, points | 39 to 49 | |
| 19 to 20 |
| Thermal Diffusivity, mm2/s | 3.4 | |
| 11 |
| Thermal Shock Resistance, points | 47 to 67 | |
| 16 to 18 |
Alloy Composition
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| Aluminum (Al), % | 2.5 to 3.5 | |
| 0 to 0.040 |
| Carbon (C), % | 0 to 0.080 | |
| 0.080 to 0.15 |
| Chromium (Cr), % | 0 | |
| 2.0 to 2.5 |
| Copper (Cu), % | 0 | |
| 0 to 0.3 |
| Hydrogen (H), % | 0 to 0.015 | |
| 0 |
| Iron (Fe), % | 0 to 0.25 | |
| 94.3 to 96.6 |
| Manganese (Mn), % | 0 | |
| 0.4 to 0.8 |
| Molybdenum (Mo), % | 0 | |
| 0.9 to 1.1 |
| Nickel (Ni), % | 0 | |
| 0 to 0.3 |
| 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 0.025 |
| Silicon (Si), % | 0 | |
| 0 to 0.5 |
| Sulfur (S), % | 0 | |
| 0 to 0.010 |
| Titanium (Ti), % | 92.5 to 95.5 | |
| 0 |
| Vanadium (V), % | 2.0 to 3.0 | |
| 0 |
| Residuals, % | 0 to 0.4 | |
| 0 |