Grade 9 Titanium vs. SAE-AISI 6150 Steel
Grade 9 titanium belongs to the titanium alloys classification, while SAE-AISI 6150 steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.
For each property being compared, the top bar is grade 9 titanium and the bottom bar is SAE-AISI 6150 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 190 |
| Elongation at Break, % | 11 to 17 | |
| 15 to 23 |
| Fatigue Strength, MPa | 330 to 480 | |
| 300 to 750 |
| Poisson's Ratio | 0.32 | |
| 0.29 |
| Shear Modulus, GPa | 40 | |
| 73 |
| Shear Strength, MPa | 430 to 580 | |
| 400 to 730 |
| Tensile Strength: Ultimate (UTS), MPa | 700 to 960 | |
| 630 to 1200 |
| Tensile Strength: Yield (Proof), MPa | 540 to 830 | |
| 420 to 1160 |
Thermal Properties
| Latent Heat of Fusion, J/g | 410 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 330 | |
| 420 |
| Melting Completion (Liquidus), °C | 1640 | |
| 1460 |
| Melting Onset (Solidus), °C | 1590 | |
| 1410 |
| Specific Heat Capacity, J/kg-K | 550 | |
| 470 |
| Thermal Conductivity, W/m-K | 8.1 | |
| 46 |
| Thermal Expansion, µm/m-K | 9.1 | |
| 12 to 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 1.4 | |
| 7.3 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.7 | |
| 8.4 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 37 | |
| 2.3 |
| Density, g/cm3 | 4.5 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 36 | |
| 2.0 |
| Embodied Energy, MJ/kg | 580 | |
| 28 |
| Embodied Water, L/kg | 150 | |
| 51 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 89 to 110 | |
| 130 to 180 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1380 to 3220 | |
| 460 to 3590 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 35 | |
| 24 |
| Strength to Weight: Axial, points | 43 to 60 | |
| 22 to 43 |
| Strength to Weight: Bending, points | 39 to 48 | |
| 21 to 32 |
| Thermal Diffusivity, mm2/s | 3.3 | |
| 13 |
| Thermal Shock Resistance, points | 52 to 71 | |
| 20 to 38 |
Alloy Composition
| Aluminum (Al), % | 2.5 to 3.5 | |
| 0 |
| Carbon (C), % | 0 to 0.080 | |
| 0.48 to 0.53 |
| Chromium (Cr), % | 0 | |
| 0.8 to 1.1 |
| Hydrogen (H), % | 0 to 0.015 | |
| 0 |
| Iron (Fe), % | 0 to 0.25 | |
| 96.7 to 97.7 |
| Manganese (Mn), % | 0 | |
| 0.7 to 0.9 |
| Nitrogen (N), % | 0 to 0.030 | |
| 0 |
| Oxygen (O), % | 0 to 0.15 | |
| 0 |
| Phosphorus (P), % | 0 | |
| 0 to 0.035 |
| Silicon (Si), % | 0 | |
| 0.15 to 0.35 |
| Sulfur (S), % | 0 | |
| 0 to 0.040 |
| Titanium (Ti), % | 92.6 to 95.5 | |
| 0 |
| Vanadium (V), % | 2.0 to 3.0 | |
| 0.15 to 0.3 |
| Residuals, % | 0 to 0.4 | |
| 0 |