Grade 9 Titanium vs. AISI 301LN Stainless Steel
Grade 9 titanium belongs to the titanium alloys classification, while AISI 301LN stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.
For each property being compared, the top bar is grade 9 titanium and the bottom bar is AISI 301LN stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 200 |
| Elongation at Break, % | 11 to 17 | |
| 23 to 51 |
| Fatigue Strength, MPa | 330 to 480 | |
| 270 to 520 |
| Poisson's Ratio | 0.32 | |
| 0.28 |
| Shear Modulus, GPa | 40 | |
| 77 |
| Shear Strength, MPa | 430 to 580 | |
| 450 to 670 |
| Tensile Strength: Ultimate (UTS), MPa | 700 to 960 | |
| 630 to 1060 |
| Tensile Strength: Yield (Proof), MPa | 540 to 830 | |
| 270 to 770 |
Thermal Properties
| Latent Heat of Fusion, J/g | 410 | |
| 280 |
| Maximum Temperature: Mechanical, °C | 330 | |
| 890 |
| Melting Completion (Liquidus), °C | 1640 | |
| 1430 |
| Melting Onset (Solidus), °C | 1590 | |
| 1380 |
| Specific Heat Capacity, J/kg-K | 550 | |
| 480 |
| Thermal Conductivity, W/m-K | 8.1 | |
| 15 |
| Thermal Expansion, µm/m-K | 9.1 | |
| 16 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 1.4 | |
| 2.4 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.7 | |
| 2.7 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 37 | |
| 13 |
| Density, g/cm3 | 4.5 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 36 | |
| 2.7 |
| Embodied Energy, MJ/kg | 580 | |
| 39 |
| Embodied Water, L/kg | 150 | |
| 130 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 89 to 110 | |
| 220 to 290 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1380 to 3220 | |
| 180 to 1520 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 35 | |
| 25 |
| Strength to Weight: Axial, points | 43 to 60 | |
| 22 to 38 |
| Strength to Weight: Bending, points | 39 to 48 | |
| 21 to 30 |
| Thermal Diffusivity, mm2/s | 3.3 | |
| 4.0 |
| Thermal Shock Resistance, points | 52 to 71 | |
| 14 to 24 |
Alloy Composition
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| Aluminum (Al), % | 2.5 to 3.5 | |
| 0 |
| Carbon (C), % | 0 to 0.080 | |
| 0 to 0.030 |
| Chromium (Cr), % | 0 | |
| 16 to 18 |
| Hydrogen (H), % | 0 to 0.015 | |
| 0 |
| Iron (Fe), % | 0 to 0.25 | |
| 70.7 to 77.9 |
| Manganese (Mn), % | 0 | |
| 0 to 2.0 |
| Nickel (Ni), % | 0 | |
| 6.0 to 8.0 |
| Nitrogen (N), % | 0 to 0.030 | |
| 0.070 to 0.2 |
| Oxygen (O), % | 0 to 0.15 | |
| 0 |
| Phosphorus (P), % | 0 | |
| 0 to 0.045 |
| Silicon (Si), % | 0 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 | |
| 0 to 0.030 |
| Titanium (Ti), % | 92.6 to 95.5 | |
| 0 |
| Vanadium (V), % | 2.0 to 3.0 | |
| 0 |
| Residuals, % | 0 to 0.4 | |
| 0 |