introduction of Aerospace Ti-6Al-4V Seamless Titanium Tubing
Aerospace Ti-6Al-4V Seamless Titanium Tubings are long, hollow-section tubes manufactured from titanium alloy through processes such as piercing, extrusion, and cold rolling/cold drawing, resulting in a product with no longitudinal welds. They serve as a critical lightweight, corrosion-resistant material in the field of high-end equipment manufacturing. Their core advantages lie in their uniform structure, absence of weld-induced weaknesses, high dimensional accuracy, strong corrosion resistance, and extremely high specific strength. They are widely used in demanding operating environments such as aerospace, petrochemicals, marine engineering, and medical applications.
Specifications and Standards
1. Standard Specifications
Outer Diameter (OD): Φ3 mm to Φ200 mm (small diameter), Φ200 mm and above (large diameter).
Wall Thickness (WT): 0.5 mm to 20 mm.
Length: 1000 mm to 6000 mm; can be cut to any length upon request.
Tolerances: Precision grade: OD ±0.02 mm, wall thickness ±0.05 mm; Standard grade: ±0.1–0.5 mm.
2. Applicable Standards
International: ASTM B861/ASME SB-861, AMS 4928 (Aviation), ASTM B338 (Heat Exchangers).
Manufacturing Process of Aerospace Ti-6Al-4V Seamless Titanium Tubing
1. Tube Blank Preparation (Two Main Methods)
Piercing and Extrusion Method (Mainstream)
Titanium ingot → Forging / Rolling → Bar stock → Heating (β phase region / α+β phase region) → Lubricated piercing and extrusion → Hollow tube blank.
Advantages: Grain refinement, dense microstructure, few defects; suitable for small-diameter, high-precision, high-performance tube blanks.
Oblique Rolling Piercing Method
Solid bar → Oblique rolling piercing → Rough tube blank; suitable for large-diameter, thick-walled tube blanks; lower cost, but slightly poorer microstructural uniformity.
2. Final Shaping (Primarily Cold Working)
Cold Rolling Method (High Precision)
Tube blank → Pickling → Lubrication → Multi-pass cold rolling (wall thinning, diameter reduction, precision control) → Vacuum annealing → Finishing.
Features: Extremely high dimensional accuracy (wall thickness tolerance ±0.05 mm), smooth surface, uniform microstructure; suitable for small-diameter precision tubes.
Cold Drawing Method (Low Cost)
Tube blank → Pickling → Cold drawing → Annealing → Finishing; suitable for large-diameter, general-precision tubes; high efficiency.
3. Heat Treatment and Post-Processing
Vacuum annealing: Eliminates internal stresses, improves ductility, stabilizes microstructure, and prevents oxidation and discoloration.
Stress-relief annealing: Enhances dimensional stability of high-strength tubing.
Finishing: Straightening, polishing, eddy current/ultrasonic testing, hydrostatic testing (1.5–2 times design pressure), acid washing and passivation.
Key Benefits of Aerospace Ti-6Al-4V Seamless Titanium Tubing
- Exceptionally high strength-to-weight ratio: lightweight + high strength, delivering significant weight reduction and performance gains.
- Unparalleled corrosion resistance: far outlasts traditional metals in seawater, chloride, and acidic or alkaline environments.
- Seamless and homogeneous: free of weld defects, offering superior pressure resistance, fatigue resistance, and reliability.
- Wide temperature range: stable performance from -196°C to 550°C.
- Non-magnetic and biocompatible: suitable for medical and precision electronics applications.
Applications of Aerospace Ti-6Al-4V Seamless Titanium Tubing
1. Aerospace
Aircraft hydraulic piping systems, fuel lines
Engine piping, airframe structures
Propellant delivery lines for spacecraft
2. Marine Engineering
Ship seawater cooling systems, heat exchangers
Subsea pipelines, offshore oil platforms
Submarine and deep-sea submersible seawater intake lines
3. Chemical and Energy
Nuclear power plant cooling water pipes, heat exchangers
Chemical reactors, high-pressure fluid conveyance
Geothermal wells, desalination plants
4. Medical Devices
Surgical instruments, implants (stents, bone pins)
Endoscopes, catheters
Thanks to excellent biocompatibility and non-magnetic properties
Products detail show of Aerospace Ti-6Al-4V Seamless Titanium Tubing
about our factory
One-stop Titanium Processing Parts Factory in China
We Baoji Reliab Metal Material Co.,Ltd was founded in year 2014, located in the famous 'China Titanium Valley--BAOJI', under the strong R&D ability and continuously development, our mainly products have including titanium&titanium alloy bars/rods, plates, tubes, forgings, fasteners&machined parts, also zirconium and nickel products.
We have passed the Quality System Certificate of ISO 9001-2015, aiming for the satisfactions of different customers' requests.
how to contact us?
E-mail: garychen3215@hotmail.com
Address: No.35, Baoti Rd, Baoji city, Shaanxi Province, China
Contact: Mr. Gary Chen
Phone: +86-917-8883215
Mobile/WhatsApp: +86 13092900605
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