Grade 20 Titanium vs. Titanium 4-4-2
Both grade 20 titanium and titanium 4-4-2 are titanium alloys. They have 82% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.
For each property being compared, the top bar is grade 20 titanium and the bottom bar is titanium 4-4-2.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 120 | |
| 110 |
| Elongation at Break, % | 5.7 to 17 | |
| 10 |
| Fatigue Strength, MPa | 550 to 630 | |
| 590 to 620 |
| Poisson's Ratio | 0.32 | |
| 0.32 |
| Reduction in Area, % | 23 | |
| 20 |
| Shear Modulus, GPa | 47 | |
| 42 |
| Shear Strength, MPa | 560 to 740 | |
| 690 to 750 |
| Tensile Strength: Ultimate (UTS), MPa | 900 to 1270 | |
| 1150 to 1250 |
| Tensile Strength: Yield (Proof), MPa | 850 to 1190 | |
| 1030 to 1080 |
Thermal Properties
| Latent Heat of Fusion, J/g | 400 | |
| 410 |
| Maximum Temperature: Mechanical, °C | 370 | |
| 310 |
| Melting Completion (Liquidus), °C | 1660 | |
| 1610 |
| Melting Onset (Solidus), °C | 1600 | |
| 1560 |
| Specific Heat Capacity, J/kg-K | 520 | |
| 540 |
| Thermal Expansion, µm/m-K | 9.6 | |
| 8.6 |
Otherwise Unclassified Properties
| Density, g/cm3 | 5.0 | |
| 4.7 |
| Embodied Carbon, kg CO2/kg material | 52 | |
| 30 |
| Embodied Energy, MJ/kg | 860 | |
| 480 |
| Embodied Water, L/kg | 350 | |
| 180 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 71 to 150 | |
| 110 to 120 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 2940 to 5760 | |
| 4700 to 5160 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 33 | |
| 34 |
| Strength to Weight: Axial, points | 50 to 70 | |
| 68 to 74 |
| Strength to Weight: Bending, points | 41 to 52 | |
| 52 to 55 |
| Thermal Shock Resistance, points | 55 to 77 | |
| 86 to 93 |
Alloy Composition
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| Aluminum (Al), % | 3.0 to 4.0 | |
| 3.0 to 5.0 |
| Carbon (C), % | 0 to 0.050 | |
| 0 to 0.080 |
| Chromium (Cr), % | 5.5 to 6.5 | |
| 0 |
| Hydrogen (H), % | 0 to 0.020 | |
| 0 to 0.015 |
| Iron (Fe), % | 0 to 0.3 | |
| 0 to 0.2 |
| Molybdenum (Mo), % | 3.5 to 4.5 | |
| 3.0 to 5.0 |
| Nitrogen (N), % | 0 to 0.030 | |
| 0 to 0.050 |
| Oxygen (O), % | 0 to 0.12 | |
| 0 to 0.25 |
| Palladium (Pd), % | 0.040 to 0.080 | |
| 0 |
| Silicon (Si), % | 0 | |
| 0.3 to 0.7 |
| Tin (Sn), % | 0 | |
| 1.5 to 2.5 |
| Titanium (Ti), % | 71 to 77 | |
| 85.8 to 92.2 |
| Vanadium (V), % | 7.5 to 8.5 | |
| 0 |
| Zirconium (Zr), % | 3.5 to 4.5 | |
| 0 |
| Residuals, % | 0 to 0.4 | |
| 0 to 0.4 |