Commercial Pure Titanium
Titanium Technology Forum (TTF) — Source Institutt for Energi Teknikk — IFE Norway
| Chemical composition (weight %) (Maximum values unless range is shown) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| O | N | C | H | Fe | Pd | V | Ni | Mo | Others | Residuals |
| 0.18 | 0.03 | 0.10 | 0.015 | 0.20 | 0.12–0.55 | 0.4 | ||||
This alloy is the same as Grade 1, but with Pd for better corrosion resistance.
Grade 11 has optimum ductility and cold formability. It has also useful strength, high-impact toughness and excellent weldability.
| Mechanical properties at room temperature | ||
|---|---|---|
| Minimum values | Typical values | |
| Yield Strength | 170 MPa | 220 MPa |
| Ultimate Strength | 240 MPa | 345 MPa |
| Elongation in 50 mm, A5 | 25 % | 37 % |
| Reduction in Area | 35 % | % |
| Hardness | · | 120–150 HV |
| Modulus of elasticity | · | 103 GPa |
Yield strangth vs. temperature
Temperature / °C
Tensile strength vs. temperature
Temperature / °C
| Physical Properties | |
|---|---|
| Melting Point ± 15°C | 1670°C |
| Density | 4.51 g/cm³ |
| Beta transus ± 15°C | 890°C |
| Thermal Expansion, 20–100°C | 8.8 × 10⁻⁶ K⁻¹ |
| Thermal Expansion, 0–300°C | 9.2 × 10⁻⁶ K⁻¹ |
| Thermal Conductivity, room temperature | 20.6 W/m·K |
| Specific heat, room temperature | 0.52 J/g·K |
| Specific heat, 400°C | 0.60 J/g·K |
| Electrical Resistivity, room temperature | 56 μΩ·cm |
| Poisson’s Ratio | 0.34 |
| Heat Treating — Alpha alloys exhibit a single phase microstructure and cannot be strengthened by heat treatment. | |||
|---|---|---|---|
| Temperature | Time | ||
| Annealing | Air-cooled | 650–780℃ | 6 mins – 2 hours |
| Stress Relieving | Air-cooled | 480–595℃ | 15 min – 4 hours |
Weldability – Excellent
Grade 11 has very good weldability. Being substantially single phase material, the microstructure of the alpha phase is not affected greatly by thermal treatments or welding temperatures. Therefore, the mechanical properties of a correclly welded joint are equal to, or exceed those of the parent metal and show good ductility.
Available mill products
Bar, billet, ingot, extrusions, plate, sheet, strip, tubing, wire, pipe, foil.
Typical Applications
Good corrosion resistance for chemical processing industry applications in which the quid medium is mildly reducing or varies between oxidizing and reducing. Palladium improves resistance to crevice corrosion.
Grade 11 has good formability
| Industry Specifications | |
|---|---|
| Industry Specifications |
ASTM Grade 11, TIMETAL 35A Pd, RMI 0.2% Pd, ST–40Pd |
| Sheet and Plate | ASTM B265 Gr11 |
| Bars and Billets | ASTM B348 Gr11 |
| Forging | ASTM B361 Gr11 |
| Tube | ASTM B337 Gr11, ASTM B338 Gr11 |