TSM Technology supplies Grade 9 titanium tube (Ti-3Al-2.5V) for bicycle frame manufacturers, custom frame builders and lightweight structural applications. Our tubing combines high strength-to-weight ratio, excellent fatigue resistance, corrosion resistance and good formability for frame fabrication. Seamless tubes are available in customized outside diameters, wall thicknesses and lengths, with ASTM B338 compliance and MTC documentation available upon request.
Product Introduction
| Item | Specification |
|---|---|
| Material | Grade 9 / Ti-3Al-2.5V |
| UNS | R56320 |
| Standard | ASTM B338 |
| Tube Type | Seamless |
| OD | Custom |
| Wall Thickness | Custom |
| Length | Cut-to-Length |
| Surface | Bright / Polished |
| Condition | Annealed / CWSR |
| Certification | EN 10204 3.1 MTC |
| Application | Bicycle Frames |
Technical Specifications & Data
Chemical Composition (%)
| Element | Ti | Al | V | Fe | O | C | N | H |
|---|---|---|---|---|---|---|---|---|
| Content (%) | Balance | 2.5–3.5 | 2.0–3.0 | ≤0.25 | ≤0.12 | ≤0.10 | ≤0.02 | ≤0.013 |
Chemical composition is controlled according to the applicable ASTM specification. Actual values are provided in the MTC for each batch.
Mechanical Properties
| Condition | Tensile Strength | Yield Strength | Elongation |
|---|---|---|---|
| Annealed | ≥620 MPa | ≥483 MPa | ≥15% |
| CWSR | Up to 862 MPa* | Up to 724 MPa* | Available on request |
*Mechanical properties depend on cold-working condition, tube dimensions and applicable specification. Actual values can be confirmed by MTC or test report.
Grade 9 Titanium Tube Sizes for Bicycle Frames
| Application | Typical OD | Wall Thickness | Length |
|---|---|---|---|
| Top Tube | Custom | Custom | Custom |
| Down Tube | Custom | Custom | Custom |
| Seat Tube | Custom | Custom | Custom |
| Chainstay | Custom | Custom | Custom |
| Seatstay | Custom | Custom | Custom |
Grade 9 vs Grade 5 for Bicycle Frames
| Property | Grade 9 Ti-3Al-2.5V | Grade 5 Ti-6Al-4V |
|---|---|---|
| Strength | High | Higher |
| Strength-to-Weight Ratio | Excellent | Excellent |
| Formability | Better | More demanding |
| Cold Working | Good | Limited |
| Weldability | Good | More demanding |
| Bicycle Frame Tubing | Common choice | More specialized |
| Typical Use | Frame Tubes | High-Strength Components |
Why is Grade 9 commonly used for bicycle frame tubing?
Grade 9 offers a practical balance of strength, ductility, formability, fatigue performance and weight. Compared with higher-strength titanium alloys such as Grade 5, its better formability makes it well suited to the bending, shaping and fabrication requirements of bicycle frame tubing.
Key Advantages for Bicycle Manufacturing
| Advantage | Description |
|---|---|
| Superior Strength-to-Weight Ratio | Offers higher strength than pure titanium grades, allowing for thinner-walled tubes and a lighter overall frame without sacrificing durability. |
| Outstanding Formability | Grade 9 titanium tubing can be cold-worked and formed for complex frame geometries. Bending radius and forming limits depend on tube diameter, wall thickness, material condition and tooling. |
| Excellent Frame Fabrication Characteristics | Grade 9 titanium combines good ductility and formability with high strength, making it suitable for bending, shaping and fabrication of lightweight bicycle frame tubes. |
Applications
Bicycle Frames
- Road Bikes
- Mountain Bikes
- Gravel Bikes
- Touring Bikes
- Custom Titanium Frames
- High-End Racing Frames
Other Lightweight Tubular Applications
- Sporting Equipment
- Aerospace Hydraulic Tubing
- Lightweight Structural Components
Grade 9 Titanium Tube Processing
- Cutting to Length
- CNC Mitering
- Tube Bending
- End Forming
- TIG Welding Support
- Surface Polishing
- Custom OD / Wall Thickness
- Custom Length
- Butted Tube Manufacturing
Quality Control & Testing
We ensure every tube meets the highest standards of performance and safety through a battery of tests:
- Non-Destructive Testing: Eddy Current Test, Ultrasonic Test (UT), X-ray Test.
- Dimensional & Mechanical Tests: Flaring Test, Flattening Test.
- Pressure Integrity: Water Pressure Test.
- Certification: Material Test Certificates (MTC) provided.
Why Choose Our Grade 9 Titanium Tubes?
Optimized for Bicycles
Our tubing is produced with the specific demands of bicycle frame fabrication in mind, ensuring consistent properties and formability.
Controlled Manufacturing
Our titanium tube production follows controlled processing and inspection procedures designed to ensure consistent chemistry, dimensions and mechanical properties from batch to batch.
Superior Corrosion Resistance
Grade 9 titanium provides excellent resistance to atmospheric moisture, salt exposure and many corrosive environments, making it suitable for bicycle frames used in demanding outdoor conditions.
Suitable for TIG Welding
Grade 9 titanium can be TIG welded when proper shielding, surface preparation and welding procedures are used. Clean material handling and controlled shielding are essential for maintaining weld quality.
FAQ
What is Grade 9 titanium?
Grade 9 titanium is a Ti-3Al-2.5V alloy (UNS R56320) offering a good balance of strength, fatigue resistance, corrosion resistance and formability.
What is Ti-3Al-2.5V titanium?
Ti-3Al-2.5V is the designation for Grade 9 titanium, containing approximately 3% aluminum and 2.5% vanadium. It is widely used for lightweight tubing.
Is Grade 9 titanium good for bicycle frames?
Yes. Grade 9 titanium is widely used for bicycle frame tubing because of its high strength-to-weight ratio, fatigue resistance and good formability.
What standard is used for Grade 9 titanium tube?
Grade 9 titanium tube can be supplied according to ASTM B338, with other specifications available according to application and customer requirements.
Can Grade 9 titanium tubing be bent?
Yes. Grade 9 titanium tubing has good formability and can be bent for frame fabrication. The bending radius depends on tube size, wall thickness and material condition.
Can you supply custom Grade 9 titanium tube sizes?
Yes. Custom outside diameter, wall thickness and length are available according to project requirements.
Do you provide EN 10204 3.1 MTC?
Yes. EN 10204 3.1 MTC can be provided with Grade 9 titanium tubes to support material traceability and quality control.
Request a Grade 9 Titanium Tube Quote
Looking for Grade 9 titanium tube for a bicycle frame project? Send us your required outside diameter, wall thickness, tube length, quantity and applicable standard. TSM Technology can provide customized seamless titanium tubing with material certification and inspection documentation upon request.
Email: info@tsm-titanium.com.
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