Grade 31 Titanium vs. AISI 301L Stainless Steel
Grade 31 titanium belongs to the titanium alloys classification, while AISI 301L stainless steel belongs to the iron alloys. There are 29 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 AISI 301L stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 200 |
| Elongation at Break, % | 20 | |
| 22 to 50 |
| Fatigue Strength, MPa | 300 | |
| 240 to 530 |
| Poisson's Ratio | 0.32 | |
| 0.28 |
| Shear Modulus, GPa | 41 | |
| 77 |
| Shear Strength, MPa | 320 | |
| 440 to 660 |
| Tensile Strength: Ultimate (UTS), MPa | 510 | |
| 620 to 1040 |
| Tensile Strength: Yield (Proof), MPa | 450 | |
| 250 to 790 |
Thermal Properties
| Latent Heat of Fusion, J/g | 420 | |
| 280 |
| Maximum Temperature: Mechanical, °C | 320 | |
| 890 |
| Melting Completion (Liquidus), °C | 1660 | |
| 1430 |
| Melting Onset (Solidus), °C | 1610 | |
| 1390 |
| Specific Heat Capacity, J/kg-K | 540 | |
| 480 |
| Thermal Conductivity, W/m-K | 21 | |
| 15 |
| Thermal Expansion, µm/m-K | 8.7 | |
| 16 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 3.4 | |
| 2.3 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 6.9 | |
| 2.7 |
Otherwise Unclassified Properties
| Density, g/cm3 | 4.5 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 36 | |
| 2.7 |
| Embodied Energy, MJ/kg | 600 | |
| 39 |
| Embodied Water, L/kg | 230 | |
| 130 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 99 | |
| 210 to 300 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 940 | |
| 160 to 1580 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 35 | |
| 25 |
| Strength to Weight: Axial, points | 32 | |
| 22 to 37 |
| Strength to Weight: Bending, points | 32 | |
| 21 to 29 |
| Thermal Diffusivity, mm2/s | 8.5 | |
| 4.1 |
| Thermal Shock Resistance, points | 39 | |
| 14 to 24 |
Alloy Composition
| Carbon (C), % | 0 to 0.080 | |
| 0 to 0.030 |
| Chromium (Cr), % | 0 | |
| 16 to 18 |
| Cobalt (Co), % | 0.2 to 0.8 | |
| 0 |
| Hydrogen (H), % | 0 to 0.015 | |
| 0 |
| Iron (Fe), % | 0 to 0.3 | |
| 70.7 to 78 |
| Manganese (Mn), % | 0 | |
| 0 to 2.0 |
| Nickel (Ni), % | 0 | |
| 6.0 to 8.0 |
| Nitrogen (N), % | 0 to 0.050 | |
| 0 to 0.2 |
| Oxygen (O), % | 0 to 0.35 | |
| 0 |
| Palladium (Pd), % | 0.040 to 0.080 | |
| 0 |
| Phosphorus (P), % | 0 | |
| 0 to 0.045 |
| Silicon (Si), % | 0 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 | |
| 0 to 0.030 |
| Titanium (Ti), % | 97.9 to 99.76 | |
| 0 |
| Residuals, % | 0 to 0.4 | |
| 0 |