Description
Annealed Grade 2 Seamless Titanium Tube
This listing covers annealed Grade 2 seamless titanium tube to ASTM B338, with outside diameters of 6–114 mm, wall thicknesses of 0.5–5 mm and lengths up to 6,000 mm. Specify OD, wall thickness, cut length, finish and quantity. Include your drawing and inspection requirements so the exact size combination and delivery requirements can be confirmed before quotation.
GR2 Seamless Titanium Tube – ASTM B338 Certified Corrosion-Resistant Tubing for Industrial & Marine Applications
The GR2 seamless titanium tube is engineered for demanding industrial environments where exceptional corrosion resistance and strength-to-weight performance are critical. Manufactured in compliance with the ASTM B338 standard, this tube is made from commercially pure titanium Grade 2 (UNS R50400) — a material known for its reliability in chemical processing, seawater systems, and power generation applications.
🔹 What is GR2 Seamless Titanium Tube?
GR2 is one of the most widely used titanium grades due to its optimal balance of mechanical strength, corrosion resistance, and fabricability. It contains over 98.8% pure titanium, with controlled levels of oxygen, iron, and other trace elements. The seamless construction eliminates potential weak points and ensures consistent flow performance under pressure, temperature, and chemical exposure.
📐 Standard Sizes & Tolerances
| Parameter | Specification |
|---|---|
| Outer Diameter (OD) | 6 mm – 114 mm |
| Wall Thickness | 0.5 mm – 5.0 mm |
| Length | ≤ 6,000 mm (custom lengths available) |
| Finish | Pickled / Bright / Polished |
| Condition | Annealed |
| Tolerances | As per ASTM B338 or customer drawing |
We offer custom processing such as cut-to-length, beveling, and precision polishing for specific end-use requirements.
🧪 Chemical Composition (Typical, per ASTM B338)
| Element | Max. % |
|---|---|
| Oxygen (O) | 0.25 |
| Iron (Fe) | 0.30 |
| Carbon (C) | 0.08 |
| Nitrogen (N) | 0.03 |
| Hydrogen (H) | 0.015 |
| Titanium (Ti) | Balance (~98.9%) |
This composition ensures excellent corrosion protection and high-temperature stability in both oxidizing and chloride-rich environments.
📊 Mechanical Properties (Annealed State)
| Property | Minimum Requirement |
|---|---|
| Tensile Strength | 344 MPa (50 ksi) |
| Yield Strength (0.2%) | 275 MPa (40 ksi) |
| Elongation | ≥ 20% |
| Elastic Modulus | 105 GPa |
| Density | 4.51 g/cm³ |
These properties make the GR2 seamless titanium tube easy to bend, weld, and machine while maintaining structural integrity.
🌊 Corrosion Resistance & Use Environments
The GR2 seamless titanium tube resists:
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Seawater and brine
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Oxidizing acids (nitric, chromic)
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Alkaline solutions and bleach
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Wet chlorine and chlorides
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Mild reducing environments
Thanks to its naturally forming TiO₂ oxide layer, it remains passivated even under fluctuating conditions and minor scratches.
📘 Learn more at AZoM – Titanium Grades and Corrosion Behavior
🔧 Applications
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🌊 Desalination and marine systems – Piping and condensers
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🧪 Chemical processing – Acid and alkali fluid lines
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🔥 Power plants – Condensers and heat exchangers
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💧 Water treatment – Chlorine-resistant pipework
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🚀 Hydrogen & aerospace – Clean media tubing
The GR2 seamless titanium tube is preferred where weight, corrosion resistance, and reliability are crucial over long service cycles.
🧪 Testing & Quality Assurance
Every GR2 tube is subjected to strict QA/QC as per ASTM B338:
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✅ Hydrostatic or pneumatic leak testing
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✅ Flattening and flaring tests
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✅ Dimensional inspection
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✅ Optional ultrasonic or eddy current testing
Documentation includes:
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Mill Test Certificate (EN 10204 3.1)
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Certificate of Origin
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Full heat and batch traceability
📦 Packaging & Shipping
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PE wrapping + plastic end caps
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Foam-protected plywood crates
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Heat number, grade, and size labeling
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International sea & air freight support
Compare Titanium Tube Listings
For the separately listed Grade 2 tube range covering 0.5–10 mm walls, see Grade 2 titanium tube, wall thickness up to 10 mm. The size ranges overlap; specify this annealed listing and your required dimensions when enquiring. Browse all titanium tubes to compare other listed grades and forms.
📌 Why Choose Our GR2 Seamless Titanium Tube?
With decades of titanium processing experience and strict adherence to international specifications, we ensure our titanium tubes meet the highest standards in:
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Dimensional accuracy
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Material traceability
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Corrosion and temperature performance
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Export documentation and global compliance
📞 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 detailed quotations, datasheets, or consultation — we reply within 24 hours.
Ordering Information
Review our purchasing guide and send your seamless tube requirements for a quotation.
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