Annealed Grade 9 Titanium vs. Annealed SAE-AISI H21
Annealed grade 9 titanium belongs to the titanium alloys classification, while annealed SAE-AISI H21 belongs to the iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.
For each property being compared, the top bar is annealed grade 9 titanium and the bottom bar is annealed SAE-AISI H21.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 200 |
| Poisson's Ratio | 0.32 | |
| 0.29 |
| Shear Modulus, GPa | 40 | |
| 76 |
| Tensile Strength: Ultimate (UTS), MPa | 700 | |
| 720 |
Thermal Properties
| Latent Heat of Fusion, J/g | 410 | |
| 250 |
| Melting Completion (Liquidus), °C | 1640 | |
| 1630 |
| Melting Onset (Solidus), °C | 1590 | |
| 1580 |
| Specific Heat Capacity, J/kg-K | 550 | |
| 440 |
| Thermal Conductivity, W/m-K | 8.1 | |
| 27 |
| Thermal Expansion, µm/m-K | 9.1 | |
| 11 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 37 | |
| 23 |
| Density, g/cm3 | 4.5 | |
| 8.5 |
| Embodied Carbon, kg CO2/kg material | 36 | |
| 4.5 |
| Embodied Energy, MJ/kg | 580 | |
| 68 |
| Embodied Water, L/kg | 150 | |
| 72 |
Common Calculations
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 35 | |
| 23 |
| Strength to Weight: Axial, points | 43 | |
| 23 |
| Strength to Weight: Bending, points | 39 | |
| 21 |
| Thermal Diffusivity, mm2/s | 3.3 | |
| 7.1 |
| Thermal Shock Resistance, points | 52 | |
| 24 |
Alloy Composition
| Aluminum (Al), % | 2.5 to 3.5 | |
| 0 |
| Carbon (C), % | 0 to 0.080 | |
| 0.28 to 0.36 |
| Chromium (Cr), % | 0 | |
| 3.0 to 3.8 |
| Copper (Cu), % | 0 | |
| 0 to 0.25 |
| Hydrogen (H), % | 0 to 0.015 | |
| 0 |
| Iron (Fe), % | 0 to 0.25 | |
| 87.6 to 93.8 |
| Manganese (Mn), % | 0 | |
| 0.15 to 0.4 |
| Nickel (Ni), % | 0 | |
| 0 to 0.3 |
| Nitrogen (N), % | 0 to 0.030 | |
| 0 |
| Oxygen (O), % | 0 to 0.15 | |
| 0 |
| Phosphorus (P), % | 0 | |
| 0 to 0.030 |
| Silicon (Si), % | 0 | |
| 0.15 to 0.5 |
| Sulfur (S), % | 0 | |
| 0 to 0.030 |
| Titanium (Ti), % | 92.6 to 95.5 | |
| 0 |
| Tungsten (W), % | 0 | |
| 8.5 to 10 |
| Vanadium (V), % | 2.0 to 3.0 | |
| 0.3 to 0.6 |
| Residuals, % | 0 to 0.4 | |
| 0 |