Ti-3Al-2.5V Gr9 Seamless Tube according to ASTM B338
Descriptions
Ti-3Al-2.5V Gr9 Seamless Tube is an alpha-beta titanium alloy that offers improved strength compared to commercially pure titanium grades, while maintaining excellent corrosion resistance, formability, and weldability.
Titanium Grade 9 Tube can be machined effectively with proper coolant flow, slow speeds, and high feed rates. High-speed tools such as tungsten carbide (C1–C4) or cobalt-based tooling are recommended for optimal performance.
This alloy, composed of 3% aluminum and 2.5% vanadium, provides a superior strength-to-weight ratio and outstanding corrosion resistance. It is widely used in aerospace, medical, and industrial applications, making it a versatile material for both structural and fluid-handling systems.
Specifications of Ti-3Al-2.5V Gr9 Seamless Tube
| Parameter | Specification |
|---|---|
| Outside Diameter (OD) | 5 – 114 mm |
| Wall Thickness | 0.5 – 10 mm |
| Length | 6000 mm or customized |
| Grade | Grade 9 / UNS R56320 / Ti-3Al-2.5V |
| Surface Finish | Pickling, Bright Surface |
| Standard | ASTM B861, ASTM B337, ASTM B338 |
| Process | Seamless Tube |
Chemical Composition and Mechanical Properties of Ti-3Al-2.5V Gr9 Seamless Tube
Mechanical Properties
| Grade | Tensile Strength (MPa, min) | Yield Strength (MPa, min) | Elongation (%) |
|---|---|---|---|
| Gr1 | 240 | 170 | 24 |
| Gr2 | 345 | 275 | 20 |
| Gr4 | 550 | 483 | 15 |
| Gr5 | 895 | 828 | 10 |
| Gr7 | 400 | 275 | 18 |
| Gr9 | 620 | 483 | 15 |
| Gr12 | 483 | 348 | 18 |
| Gr23 | 793 | 759 | 10 |
Chemical Composition (Weight %)
| Grade | Fe (max) | O (max) | N (max) | C (max) | H (max) | Pd (max) | Al | V | Ni (max) | Mo (max) |
|---|---|---|---|---|---|---|---|---|---|---|
| Gr1 | 0.20 | 0.18 | 0.03 | 0.08 | 0.015 | — | — | — | — | — |
| Gr2 | 0.30 | 0.25 | 0.03 | 0.08 | 0.015 | — | — | — | — | — |
| Gr4 | 0.50 | 0.40 | 0.05 | 0.08 | 0.015 | — | — | — | — | — |
| Gr5 | 0.40 | 0.20 | 0.05 | 0.08 | 0.015 | — | 5.5–6.7 | 3.5–4.5 | — | — |
| Gr7 | 0.30 | 0.25 | 0.03 | 0.08 | 0.015 | 0.12–0.25 | — | — | — | — |
| Gr9 / Ti-3Al-2.5V / UNS R56320 | 0.25 | 0.15 | 0.03 | 0.08 | 0.015 | — | 2.5–3.5 | 2.0–3.0 | — | — |
| Gr12 | 0.30 | 0.25 | 0.03 | 0.08 | 0.015 | — | 0.6–0.9 | 0.2–0.4 | — | — |
| Gr23 | 0.25 | 0.03 | 0.03 | 0.08 | 0.0125 | — | 5.5–6.5 | 3.5–4.5 | — | — |
Titanium (Ti): Balance
Applications of Ti-3Al-2.5V Gr9 Seamless Tube
Ti-3Al-2.5V Gr9 Seamless Tube is used across multiple industries due to its high strength, lightweight, corrosion resistance, and temperature tolerance.
Common applications include:
Aerospace: Hydraulic systems, airframes, and engine components
Automotive: Exhaust systems, performance frames, and suspension components
Medical: Surgical instruments and implantable structures
Marine: Corrosion-resistant piping and rigging components
Industrial: Chemical processing, heat exchangers, and fluid transfer systems
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