Annealed Grade 28 Titanium vs. Annealed Grade 9 Titanium
Both annealed grade 28 titanium and annealed grade 9 titanium are titanium alloys. Both are furnished in the annealed condition. Their average alloy composition is basically identical.
For each property being compared, the top bar is annealed grade 28 titanium and the bottom bar is annealed grade 9 titanium.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 110 |
| Elongation at Break, % | 17 | |
| 17 |
| Fatigue Strength, MPa | 350 | |
| 350 |
| Poisson's Ratio | 0.32 | |
| 0.32 |
| Reduction in Area, % | 22 | |
| 28 |
| Shear Modulus, GPa | 40 | |
| 40 |
| Shear Strength, MPa | 440 | |
| 430 |
| Tensile Strength: Ultimate (UTS), MPa | 710 | |
| 700 |
| Tensile Strength: Yield (Proof), MPa | 540 | |
| 550 |
Thermal Properties
| Latent Heat of Fusion, J/g | 410 | |
| 410 |
| Maximum Temperature: Mechanical, °C | 330 | |
| 330 |
| Melting Completion (Liquidus), °C | 1640 | |
| 1640 |
| Melting Onset (Solidus), °C | 1590 | |
| 1590 |
| Specific Heat Capacity, J/kg-K | 550 | |
| 550 |
| Thermal Conductivity, W/m-K | 8.3 | |
| 8.1 |
| Thermal Expansion, µm/m-K | 9.9 | |
| 9.1 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 1.3 | |
| 1.4 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.7 | |
| 2.7 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 36 | |
| 37 |
| Density, g/cm3 | 4.5 | |
| 4.5 |
| Embodied Carbon, kg CO2/kg material | 37 | |
| 36 |
| Embodied Energy, MJ/kg | 600 | |
| 580 |
| Embodied Water, L/kg | 370 | |
| 150 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 110 | |
| 110 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1370 | |
| 1410 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 35 | |
| 35 |
| Strength to Weight: Axial, points | 44 | |
| 43 |
| Strength to Weight: Bending, points | 39 | |
| 39 |
| Thermal Diffusivity, mm2/s | 3.4 | |
| 3.3 |
| Thermal Shock Resistance, points | 48 | |
| 52 |
Alloy Composition
Deprecated: Automatic conversion of false to array is deprecated in /home/public/compare.php on line 452
| Aluminum (Al), % | 2.5 to 3.5 | |
| 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 0.15 | |
| 0 to 0.15 |
| Ruthenium (Ru), % | 0.080 to 0.14 | |
| 0 |
| Titanium (Ti), % | 92.4 to 95.4 | |
| 92.6 to 95.5 |
| Vanadium (V), % | 2.0 to 3.0 | |
| 2.0 to 3.0 |
| Residuals, % | 0 to 0.4 | |
| 0 to 0.4 |