Grade 29 Titanium vs. Grade 28 Titanium
Both grade 29 titanium and grade 28 titanium are titanium alloys. They have a very high 96% of their average alloy composition in common.
For each property being compared, the top bar is grade 29 titanium and the bottom bar is grade 28 titanium.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 110 |
| Elongation at Break, % | 6.8 to 11 | |
| 11 to 17 |
| Fatigue Strength, MPa | 460 to 510 | |
| 330 to 480 |
| Poisson's Ratio | 0.32 | |
| 0.32 |
| Reduction in Area, % | 17 | |
| 22 |
| Shear Modulus, GPa | 40 | |
| 40 |
| Shear Strength, MPa | 550 to 560 | |
| 420 to 590 |
| Tensile Strength: Ultimate (UTS), MPa | 930 to 940 | |
| 690 to 980 |
| Tensile Strength: Yield (Proof), MPa | 850 to 870 | |
| 540 to 810 |
Thermal Properties
| Latent Heat of Fusion, J/g | 410 | |
| 410 |
| Maximum Temperature: Mechanical, °C | 340 | |
| 330 |
| Melting Completion (Liquidus), °C | 1610 | |
| 1640 |
| Melting Onset (Solidus), °C | 1560 | |
| 1590 |
| Specific Heat Capacity, J/kg-K | 560 | |
| 550 |
| Thermal Conductivity, W/m-K | 7.3 | |
| 8.3 |
| Thermal Expansion, µm/m-K | 9.3 | |
| 9.9 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 1.0 | |
| 1.3 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.0 | |
| 2.7 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 36 | |
| 36 |
| Density, g/cm3 | 4.5 | |
| 4.5 |
| Embodied Carbon, kg CO2/kg material | 39 | |
| 37 |
| Embodied Energy, MJ/kg | 640 | |
| 600 |
| Embodied Water, L/kg | 410 | |
| 370 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 62 to 100 | |
| 87 to 110 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 3420 to 3540 | |
| 1370 to 3100 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 35 | |
| 35 |
| Strength to Weight: Axial, points | 58 to 59 | |
| 43 to 61 |
| Strength to Weight: Bending, points | 47 to 48 | |
| 39 to 49 |
| Thermal Diffusivity, mm2/s | 2.9 | |
| 3.4 |
| Thermal Shock Resistance, points | 68 to 69 | |
| 47 to 66 |
Alloy Composition
Deprecated: Automatic conversion of false to array is deprecated in /home/public/compare.php on line 452
| Aluminum (Al), % | 5.5 to 6.5 | |
| 2.5 to 3.5 |
| Carbon (C), % | 0 to 0.080 | |
| 0 to 0.080 |
| Hydrogen (H), % | 0 to 0.015 | |
| 0 to 0.015 |
| Iron (Fe), % | 0 to 0.25 | |
| 0 to 0.25 |
| Nitrogen (N), % | 0 to 0.030 | |
| 0 to 0.030 |
| Oxygen (O), % | 0 to 0.13 | |
| 0 to 0.15 |
| Ruthenium (Ru), % | 0.080 to 0.14 | |
| 0.080 to 0.14 |
| Titanium (Ti), % | 88 to 90.9 | |
| 92.4 to 95.4 |
| Vanadium (V), % | 3.5 to 4.5 | |
| 2.0 to 3.0 |
| Residuals, % | 0 to 0.4 | |
| 0 to 0.4 |