Grade 31 Titanium vs. AWS ER70S-A1
Grade 31 titanium belongs to the titanium alloys classification, while AWS ER70S-A1 belongs to the iron alloys. There are 26 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 AWS ER70S-A1.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 190 |
| Elongation at Break, % | 20 | |
| 22 |
| Poisson's Ratio | 0.32 | |
| 0.29 |
| Shear Modulus, GPa | 41 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 510 | |
| 590 |
| Tensile Strength: Yield (Proof), MPa | 450 | |
| 450 |
Thermal Properties
| Latent Heat of Fusion, J/g | 420 | |
| 260 |
| 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 | |
| 50 |
| Thermal Expansion, µm/m-K | 8.7 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 3.4 | |
| 7.2 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 6.9 | |
| 8.3 |
Otherwise Unclassified Properties
| Density, g/cm3 | 4.5 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 36 | |
| 1.5 |
| Embodied Energy, MJ/kg | 600 | |
| 20 |
| Embodied Water, L/kg | 230 | |
| 48 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 99 | |
| 120 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 940 | |
| 540 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 35 | |
| 24 |
| Strength to Weight: Axial, points | 32 | |
| 21 |
| Strength to Weight: Bending, points | 32 | |
| 20 |
| Thermal Diffusivity, mm2/s | 8.5 | |
| 14 |
| Thermal Shock Resistance, points | 39 | |
| 17 |
Alloy Composition
| Carbon (C), % | 0 to 0.080 | |
| 0 to 0.12 |
| Cobalt (Co), % | 0.2 to 0.8 | |
| 0 |
| Copper (Cu), % | 0 | |
| 0 to 0.35 |
| Hydrogen (H), % | 0 to 0.015 | |
| 0 |
| Iron (Fe), % | 0 to 0.3 | |
| 96.1 to 99.3 |
| Manganese (Mn), % | 0 | |
| 0 to 1.3 |
| Molybdenum (Mo), % | 0 | |
| 0.4 to 0.65 |
| Nickel (Ni), % | 0 | |
| 0 to 0.2 |
| Nitrogen (N), % | 0 to 0.050 | |
| 0 |
| Oxygen (O), % | 0 to 0.35 | |
| 0 |
| Palladium (Pd), % | 0.040 to 0.080 | |
| 0 |
| Phosphorus (P), % | 0 | |
| 0 to 0.025 |
| Silicon (Si), % | 0 | |
| 0.3 to 0.7 |
| Sulfur (S), % | 0 | |
| 0 to 0.025 |
| Titanium (Ti), % | 97.9 to 99.76 | |
| 0 |
| Residuals, % | 0 | |
| 0 to 0.5 |