Grade 31 Titanium vs. Grade 36 Titanium
Both grade 31 titanium and grade 36 titanium are titanium alloys. Both are furnished in the annealed condition. They have 55% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.
For each property being compared, the top bar is grade 31 titanium and the bottom bar is grade 36 titanium.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 110 |
| Elongation at Break, % | 20 | |
| 11 |
| Fatigue Strength, MPa | 300 | |
| 300 |
| Poisson's Ratio | 0.32 | |
| 0.36 |
| Shear Modulus, GPa | 41 | |
| 39 |
| Shear Strength, MPa | 320 | |
| 320 |
| Tensile Strength: Ultimate (UTS), MPa | 510 | |
| 530 |
| Tensile Strength: Yield (Proof), MPa | 450 | |
| 520 |
Thermal Properties
| Latent Heat of Fusion, J/g | 420 | |
| 370 |
| Maximum Temperature: Mechanical, °C | 320 | |
| 320 |
| Melting Completion (Liquidus), °C | 1660 | |
| 2020 |
| Melting Onset (Solidus), °C | 1610 | |
| 1950 |
| Specific Heat Capacity, J/kg-K | 540 | |
| 420 |
| Thermal Expansion, µm/m-K | 8.7 | |
| 8.1 |
Otherwise Unclassified Properties
| Density, g/cm3 | 4.5 | |
| 6.3 |
| Embodied Carbon, kg CO2/kg material | 36 | |
| 58 |
| Embodied Energy, MJ/kg | 600 | |
| 920 |
| Embodied Water, L/kg | 230 | |
| 130 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 99 | |
| 59 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 940 | |
| 1260 |
| Stiffness to Weight: Axial, points | 13 | |
| 9.3 |
| Stiffness to Weight: Bending, points | 35 | |
| 25 |
| Strength to Weight: Axial, points | 32 | |
| 23 |
| Strength to Weight: Bending, points | 32 | |
| 23 |
| Thermal Shock Resistance, points | 39 | |
| 45 |
Alloy Composition
| Carbon (C), % | 0 to 0.080 | |
| 0 to 0.030 |
| Cobalt (Co), % | 0.2 to 0.8 | |
| 0 |
| Hydrogen (H), % | 0 to 0.015 | |
| 0 to 0.0035 |
| Iron (Fe), % | 0 to 0.3 | |
| 0 to 0.030 |
| Niobium (Nb), % | 0 | |
| 42 to 47 |
| Nitrogen (N), % | 0 to 0.050 | |
| 0 to 0.030 |
| Oxygen (O), % | 0 to 0.35 | |
| 0 to 0.16 |
| Palladium (Pd), % | 0.040 to 0.080 | |
| 0 |
| Titanium (Ti), % | 97.9 to 99.76 | |
| 52.3 to 58 |
| Residuals, % | 0 | |
| 0 to 0.4 |