Grade 31 Titanium vs. ASTM A266 Carbon Steel
Grade 31 titanium belongs to the titanium alloys classification, while ASTM A266 carbon 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 31 titanium and the bottom bar is ASTM A266 carbon steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 190 |
| Elongation at Break, % | 20 | |
| 21 to 26 |
| Fatigue Strength, MPa | 300 | |
| 170 to 200 |
| Poisson's Ratio | 0.32 | |
| 0.29 |
| Reduction in Area, % | 34 | |
| 34 to 43 |
| Shear Modulus, GPa | 41 | |
| 73 |
| Shear Strength, MPa | 320 | |
| 320 to 380 |
| Tensile Strength: Ultimate (UTS), MPa | 510 | |
| 500 to 600 |
| Tensile Strength: Yield (Proof), MPa | 450 | |
| 230 to 290 |
Thermal Properties
| Latent Heat of Fusion, J/g | 420 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 320 | |
| 400 |
| Melting Completion (Liquidus), °C | 1660 | |
| 1460 |
| Melting Onset (Solidus), °C | 1610 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 540 | |
| 470 |
| Thermal Conductivity, W/m-K | 21 | |
| 51 to 52 |
| Thermal Expansion, µm/m-K | 8.7 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 3.4 | |
| 7.1 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 6.9 | |
| 8.1 to 8.2 |
Otherwise Unclassified Properties
| Density, g/cm3 | 4.5 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 36 | |
| 1.4 |
| Embodied Energy, MJ/kg | 600 | |
| 18 to 19 |
| Embodied Water, L/kg | 230 | |
| 46 to 47 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 99 | |
| 110 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 940 | |
| 140 to 230 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 35 | |
| 24 |
| Strength to Weight: Axial, points | 32 | |
| 18 to 21 |
| Strength to Weight: Bending, points | 32 | |
| 18 to 20 |
| Thermal Diffusivity, mm2/s | 8.5 | |
| 14 |
| Thermal Shock Resistance, points | 39 | |
| 16 to 19 |