Grade 29 Titanium vs. Titanium 6-2-4-2
Both grade 29 titanium and titanium 6-2-4-2 are titanium alloys. They have a moderately high 92% of their average alloy composition in common.
For each property being compared, the top bar is grade 29 titanium and the bottom bar is titanium 6-2-4-2.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 110 |
| Elongation at Break, % | 6.8 to 11 | |
| 8.6 |
| Fatigue Strength, MPa | 460 to 510 | |
| 490 |
| Poisson's Ratio | 0.32 | |
| 0.32 |
| Reduction in Area, % | 17 | |
| 21 |
| Shear Modulus, GPa | 40 | |
| 40 |
| Shear Strength, MPa | 550 to 560 | |
| 560 |
| Tensile Strength: Ultimate (UTS), MPa | 930 to 940 | |
| 950 |
| Tensile Strength: Yield (Proof), MPa | 850 to 870 | |
| 880 |
Thermal Properties
| Latent Heat of Fusion, J/g | 410 | |
| 400 |
| Maximum Temperature: Mechanical, °C | 340 | |
| 300 |
| Melting Completion (Liquidus), °C | 1610 | |
| 1590 |
| Melting Onset (Solidus), °C | 1560 | |
| 1540 |
| Specific Heat Capacity, J/kg-K | 560 | |
| 540 |
| Thermal Conductivity, W/m-K | 7.3 | |
| 6.9 |
| Thermal Expansion, µm/m-K | 9.3 | |
| 9.5 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 1.0 | |
| 0.9 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.0 | |
| 1.8 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 36 | |
| 42 |
| Density, g/cm3 | 4.5 | |
| 4.6 |
| Embodied Carbon, kg CO2/kg material | 39 | |
| 32 |
| Embodied Energy, MJ/kg | 640 | |
| 520 |
| Embodied Water, L/kg | 410 | |
| 210 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 62 to 100 | |
| 79 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 3420 to 3540 | |
| 3640 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 35 | |
| 34 |
| Strength to Weight: Axial, points | 58 to 59 | |
| 57 |
| Strength to Weight: Bending, points | 47 to 48 | |
| 46 |
| Thermal Diffusivity, mm2/s | 2.9 | |
| 2.8 |
| Thermal Shock Resistance, points | 68 to 69 | |
| 67 |
Alloy Composition
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| Aluminum (Al), % | 5.5 to 6.5 | |
| 5.5 to 6.5 |
| Carbon (C), % | 0 to 0.080 | |
| 0 to 0.050 |
| Hydrogen (H), % | 0 to 0.015 | |
| 0 to 0.015 |
| Iron (Fe), % | 0 to 0.25 | |
| 0 to 0.25 |
| Molybdenum (Mo), % | 0 | |
| 1.8 to 2.2 |
| Nitrogen (N), % | 0 to 0.030 | |
| 0 to 0.050 |
| Oxygen (O), % | 0 to 0.13 | |
| 0 to 0.15 |
| Ruthenium (Ru), % | 0.080 to 0.14 | |
| 0 |
| Silicon (Si), % | 0 | |
| 0.060 to 0.12 |
| Tin (Sn), % | 0 | |
| 1.8 to 2.2 |
| Titanium (Ti), % | 88 to 90.9 | |
| 83.7 to 87.2 |
| Vanadium (V), % | 3.5 to 4.5 | |
| 0 |
| Zirconium (Zr), % | 0 | |
| 3.6 to 4.4 |
| Residuals, % | 0 to 0.4 | |
| 0 to 0.4 |