Grade 19 Titanium vs. Titanium 4-4-2
Both grade 19 titanium and titanium 4-4-2 are titanium alloys. They have 82% of their average alloy composition in common.
For each property being compared, the top bar is grade 19 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, % | 5.6 to 17 | |
| 10 |
| Fatigue Strength, MPa | 550 to 620 | |
| 590 to 620 |
| Poisson's Ratio | 0.32 | |
| 0.32 |
| Reduction in Area, % | 22 | |
| 20 |
| Shear Modulus, GPa | 47 | |
| 42 |
| Shear Strength, MPa | 550 to 750 | |
| 690 to 750 |
| Tensile Strength: Ultimate (UTS), MPa | 890 to 1300 | |
| 1150 to 1250 |
| Tensile Strength: Yield (Proof), MPa | 870 to 1170 | |
| 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 Conductivity, W/m-K | 6.2 | |
| 6.7 |
| Thermal Expansion, µm/m-K | 9.1 | |
| 8.6 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 45 | |
| 39 |
| Density, g/cm3 | 5.0 | |
| 4.7 |
| Embodied Carbon, kg CO2/kg material | 47 | |
| 30 |
| Embodied Energy, MJ/kg | 760 | |
| 480 |
| Embodied Water, L/kg | 230 | |
| 180 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 70 to 150 | |
| 110 to 120 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 3040 to 5530 | |
| 4700 to 5160 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 33 | |
| 34 |
| Strength to Weight: Axial, points | 49 to 72 | |
| 68 to 74 |
| Strength to Weight: Bending, points | 41 to 53 | |
| 52 to 55 |
| Thermal Diffusivity, mm2/s | 2.4 | |
| 2.6 |
| Thermal Shock Resistance, points | 57 to 83 | |
| 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 |
| Silicon (Si), % | 0 | |
| 0.3 to 0.7 |
| Tin (Sn), % | 0 | |
| 1.5 to 2.5 |
| Titanium (Ti), % | 71.1 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 |