Cold Worked And Stress Relieved Grade 28 Titanium vs. Cold Worked And Stress Relieved Grade 9 Titanium
Both cold worked and stress relieved grade 28 titanium and cold worked and stress relieved grade 9 titanium are titanium alloys. Both are furnished in the cold worked and stress relieved condition. Their average alloy composition is basically identical.
For each property being compared, the top bar is cold worked and stress relieved grade 28 titanium and the bottom bar is cold worked and stress relieved grade 9 titanium.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 110 |
| Elongation at Break, % | 11 | |
| 11 |
| Fatigue Strength, MPa | 480 | |
| 480 |
| Poisson's Ratio | 0.32 | |
| 0.32 |
| Reduction in Area, % | 22 | |
| 28 |
| Shear Modulus, GPa | 40 | |
| 40 |
| Shear Strength, MPa | 590 | |
| 580 |
| Tensile Strength: Ultimate (UTS), MPa | 980 | |
| 960 |
| Tensile Strength: Yield (Proof), MPa | 810 | |
| 830 |
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 | |
| 100 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 3100 | |
| 3220 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 35 | |
| 35 |
| Strength to Weight: Axial, points | 61 | |
| 60 |
| Strength to Weight: Bending, points | 49 | |
| 48 |
| Thermal Diffusivity, mm2/s | 3.4 | |
| 3.3 |
| Thermal Shock Resistance, points | 66 | |
| 71 |
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 |