Description
📄 Product Overview
The ASTM B338 GR9 Tube is a high-performance titanium alloy tube made from Ti-3Al-2.5V, also known as Grade 9 Titanium. This alloy combines the lightweight and corrosion-resistant characteristics of commercially pure titanium with enhanced strength from alloying elements aluminum (Al) and vanadium (V). Manufactured according to ASTM B338 standards, the GR9 Seamless Titanium Tube offers an optimal balance of strength, ductility, and workability, making it a preferred choice in aerospace, marine, chemical, and high-end engineering applications.
🔍 Alloy Composition and Material Characteristics
Ti-3Al-2.5V alloy is composed of approximately:
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Titanium (Ti): Balance
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Aluminum (Al): 2.5%–3.5%
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Vanadium (V): 2.0%–3.0%
This Grade 9 Titanium Tube is classified as an alpha-beta alloy, which provides superior mechanical performance compared to commercially pure titanium grades such as Grade 2, while retaining good corrosion resistance.
Key properties of ASTM B338 GR9 Tube:
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High strength-to-weight ratio – ideal for applications requiring both durability and weight reduction.
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Excellent corrosion resistance – suitable for harsh marine and chemical environments.
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Outstanding weldability – supports TIG, MIG, and plasma arc welding processes.
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High fatigue strength – reliable for dynamic load applications.
📏 Mechanical Properties
| Property | Typical Value | ASTM B338 Minimum Requirement |
|---|---|---|
| Tensile Strength (MPa) | 620–654 | ≥ 620 |
| Yield Strength 0.2% (MPa) | 483–503 | ≥ 483 |
| Elongation (%) | 20–27 | ≥ 15 |
| Modulus of Elasticity (GPa) | ~ 105 | — |
| Density (g/cm³) | 4.48 | — |
These figures demonstrate why the GR9 Seamless Titanium Tube is widely adopted in industries where both strength and corrosion resistance are critical.
⚙️ Manufacturing Process
Our ASTM B338 GR9 Tube is produced using precision-controlled manufacturing steps to ensure uniformity and reliability:
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Billet Preparation – Titanium alloy billets are forged and inspected for internal defects.
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Extrusion or Rotary Piercing – The billet is formed into a hollow tube.
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Cold Drawing – Achieves final dimensions and enhances mechanical properties.
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Annealing – Heat treatment for optimal ductility and reduced residual stresses.
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Surface Finishing – Pickling or polishing to ensure a smooth, defect-free surface.
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Final Inspection – Ultrasonic, eddy current, and hydrostatic testing according to ASTM B338.
📐 Available Sizes and Customization
We offer Grade 9 Titanium Tubes in a wide range of sizes to meet diverse engineering requirements:
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Outer Diameter (OD): 6 mm – 114 mm
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Wall Thickness: 0.5 mm – 10 mm
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Length: Up to 6 meters, custom lengths available
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Tolerance: ±0.05 mm for OD, ±0.02 mm for wall thickness
Custom manufacturing is available for non-standard sizes, ensuring precise fit for specialized projects.
🌊 Corrosion Resistance
The Ti-3Al-2.5V Tube exhibits exceptional corrosion resistance in:
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Seawater – No pitting or crevice corrosion even in long-term immersion.
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Oxidizing environments – Excellent performance in aerated conditions.
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Mild reducing acids – Stable in environments such as dilute hydrochloric acid.
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Chloride-containing solutions – Resistant to stress corrosion cracking.
This makes the ASTM B338 Titanium Tube an optimal choice for marine, offshore, and chemical processing industries.
🚀 Applications
The versatility of ASTM B338 GR9 Tube is reflected in its broad application spectrum:
Aerospace
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Hydraulic and pneumatic systems
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Fuel and exhaust lines
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Aircraft structural components
Marine
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Boat frames and masts
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Offshore platform tubing
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Desalination plant piping
Chemical Industry
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Heat exchanger tubing
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Process piping for corrosive fluids
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Condenser systems
Sports and Recreation
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High-performance bicycle frames
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Golf club shafts
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Lightweight camping gear supports
📜 Compliance and Standards
Our GR9 Seamless Titanium Tubes fully comply with:
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ASTM B338 – Standard Specification for Seamless and Welded Titanium and Titanium Alloy Tubes for Condensers and Heat Exchangers
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AMS 4943 / AMS 4944 – Aerospace material specifications
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ISO 9001:2015 – Quality management certification
🛠 Quality Assurance
Every ASTM B338 GR9 Tube undergoes rigorous inspection and testing:
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Dimensional checks – OD, wall thickness, length
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Non-destructive testing – Ultrasonic & eddy current inspections
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Mechanical testing – Tensile, yield, elongation
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Chemical analysis – Verification of Ti-3Al-2.5V composition
A full Material Test Certificate (MTC) is provided with each shipment.
📦 Packaging and Delivery
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Packaging: Polyethylene wrapping, capped ends, and seaworthy wooden cases.
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Delivery time: 15–25 days depending on order size.
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Shipping: Worldwide via air, sea, or courier.
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Export compliance: All shipments follow relevant export control regulations.
💡 Why Choose Our ASTM B338 GR9 Tube?
✔ High strength-to-weight ratio – Ideal for lightweight yet durable structures
✔ Superior corrosion resistance – Long service life in harsh environments
✔ Custom manufacturing – Sizes and lengths tailored to your needs
✔ Global delivery – Reliable export and logistics support
✔ Full traceability – Documentation and test reports with every batch
📞 Contact Us
📧 Email: sales@niticu.com
📞 Phone / WhatsApp / WeChat: +86 13335373172
🏭 Factory: Baotai Road Industrial Park, High-tech Zone, Baoji City, Shaanxi, China
🌐 Website: https://niticu.com
📩 Contact us now for pricing, samples, and expert technical support — we respond within 24 hours.
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