AWS ERTi-1 vs. AWS ERTi-2
Both AWS ERTi-1 and AWS ERTi-2 are titanium alloys. Both are furnished in the as-welded condition. Their average alloy composition is basically identical.
For each property being compared, the top bar is AWS ERTi-1 and the bottom bar is AWS ERTi-2.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 110 |
| Elongation at Break, % | 24 | |
| 20 |
| Fatigue Strength, MPa | 120 | |
| 190 |
| Poisson's Ratio | 0.32 | |
| 0.32 |
| Shear Modulus, GPa | 41 | |
| 40 |
| Tensile Strength: Ultimate (UTS), MPa | 240 | |
| 340 |
| Tensile Strength: Yield (Proof), MPa | 170 | |
| 280 |
Thermal Properties
| Latent Heat of Fusion, J/g | 420 | |
| 420 |
| Maximum Temperature: Mechanical, °C | 320 | |
| 320 |
| Melting Completion (Liquidus), °C | 1670 | |
| 1670 |
| Melting Onset (Solidus), °C | 1620 | |
| 1620 |
| Specific Heat Capacity, J/kg-K | 540 | |
| 540 |
| Thermal Conductivity, W/m-K | 21 | |
| 21 |
| Thermal Expansion, µm/m-K | 8.7 | |
| 8.7 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 3.6 | |
| 3.6 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 7.1 | |
| 7.1 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 37 | |
| 37 |
| Density, g/cm3 | 4.5 | |
| 4.5 |
| Embodied Carbon, kg CO2/kg material | 31 | |
| 31 |
| Embodied Energy, MJ/kg | 510 | |
| 510 |
| Embodied Water, L/kg | 110 | |
| 110 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 52 | |
| 64 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 140 | |
| 360 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 35 | |
| 35 |
| Strength to Weight: Axial, points | 15 | |
| 21 |
| Strength to Weight: Bending, points | 19 | |
| 24 |
| Thermal Diffusivity, mm2/s | 8.7 | |
| 8.7 |
| Thermal Shock Resistance, points | 19 | |
| 27 |
Alloy Composition
| Carbon (C), % | 0 to 0.030 | |
| 0 to 0.030 |
| Hydrogen (H), % | 0 to 0.0050 | |
| 0 to 0.0080 |
| Iron (Fe), % | 0 to 0.080 | |
| 0 to 0.12 |
| Nitrogen (N), % | 0 to 0.012 | |
| 0 to 0.015 |
| Oxygen (O), % | 0.030 to 0.1 | |
| 0.080 to 0.16 |
| Titanium (Ti), % | 99.773 to 99.97 | |
| 99.667 to 99.92 |