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| Grade | Code | UNS | Titanium |
| Ti3Al2.5V | ASTM Grade 9 | R56320 |
Ti3Al2.5V, designated as ASTM Grade 9 and UNS R56320, is a medium-strength α+β titanium alloy. It combines low density with a high strength-to-weight ratio, good fatigue resistance, corrosion resistance, cold formability, and weldability.
| Al % | V % | Fe % | O % | C % | N % | H % | Ti % |
| 2.50–3.50 | 2.00–3.00 | ≤0.25 | ≤0.15 | ≤0.08 | ≤0.03 | ≤0.015 | Balance |
| Product form | Rp0.2 [MPa] | Rm [MPa] | Elongation [%] | Hardness [HB] | Density [g/cm³] |
| Bar | ≥483 | ≥620 | ≥15 | ≈200* | 4.48 |
| Sheet | ≥483 | ≥620 | ≥15 | ≈200* | 4.48 |
* Approximately 200 HB is a typical material value; it is not a mandatory acceptance criterion under ASTM B265 or ASTM B348. Hardness may vary depending on the manufacturing method, section size, and annealing cycle.
| Industry | Products |
| Aerospace | Hydraulic and pneumatic system tubing, fuel lines, titanium foil for honeycomb panels |
| Chemical and process industry | Process piping, pressure-vessel components, chlorate-production equipment |
| Marine and desalination | Seawater cooling pipes, heat-exchanger tubes, desalination-plant piping systems |
| Sports equipment | Bicycle frames, golf-club shafts, tennis-racket frames |
| Medical and dental | Surgical implant tubes, orthopedic implant components, dental implant components |
| Automotive and motorsports | Lightweight exhaust systems, chassis support tubes, suspension components |
| Industrial pressure systems | High-pressure tubes, hydraulic lines, pressure-system fittings |
Ti3Al2.5V performance is determined not only by its chemical composition but also by the cold-forming and heat-treatment operations applied during production. Controlled cold working and stress relieving can increase strength and fatigue resistance while retaining the material's formability. Particularly in tube production, controlled orientation of the internal structure limits crack initiation and propagation under repeated loading. Therefore, the delivery condition, product dimensions, and applicable specification should be clearly stated in purchase orders.
Ti3Al2.5V, Titanium Grade 9, ASTM Grade 9, UNS R56320
| Product form | ASTM | AMS |
| Bar | ASTM B348/B348M Grade 9 | AMS 6940C |
| Plate | ASTM B265 Grade 9 | AMS 4989E |
| Seamless tube/pipe | ASTM B338 Grade 9, ASTM B861 Grade 9 | AMS 4943, AMS 4944, AMS 4945, AMS 4946 |
| Welded tube/pipe | ASTM B338 Grade 9, ASTM B862 Grade 9 | — |
ATI – ATI 32.5™ Grade 9 Titanium Alloy
Carpenter Technology – Ti 3Al 2.5V / UNS R56320
Note: The information contained in this datasheet is for informational purposes only; no liability is accepted.
