ASTM B338 GR9 Tube Precision Seamless Titanium Tubing
Oct 20, 2025 ASTM-B338-Titanium.pdf
GNEE can provide the form
Products Description
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:
Titanium (Ti): Balance
Aluminum (Al): 2.5%–3.5%
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:
High strength-to-weight ratio – ideal for applications requiring both durability and weight reduction.
Excellent corrosion resistance – suitable for harsh marine and chemical environments.
Outstanding weldability – supports TIG, MIG, and plasma arc welding processes.
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 | - |
Manufacturing Process
Our ASTM B338 GR9 Tube is produced using precision-controlled manufacturing steps to ensure uniformity and reliability:
Billet Preparation – Titanium alloy billets are forged and inspected for internal defects.
Extrusion or Rotary Piercing – The billet is formed into a hollow tube.
Cold Drawing – Achieves final dimensions and enhances mechanical properties.
Annealing – Heat treatment for optimal ductility and reduced residual stresses.
Surface Finishing – Pickling or polishing to ensure a smooth, defect-free surface.
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:
Outer Diameter (OD): 6 mm – 114 mm
Wall Thickness: 0.5 mm – 10 mm
Length: Up to 6 meters, custom lengths available
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:
Seawater – No pitting or crevice corrosion even in long-term immersion.
Oxidizing environments – Excellent performance in aerated conditions.
Mild reducing acids – Stable in environments such as dilute hydrochloric acid.
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
Hydraulic and pneumatic systems
Fuel and exhaust lines
Aircraft structural components
Marine
Boat frames and masts
Offshore platform tubing
Desalination plant piping
Chemical Industry
Heat exchanger tubing
Process piping for corrosive fluids
Condenser systems
Sports and Recreation
High-performance bicycle frames
Golf club shafts
Lightweight camping gear supports
Quality Assurance
Every ASTM B338 GR9 Tube undergoes rigorous inspection and testing:
Dimensional checks – OD, wall thickness, length
Non-destructive testing – Ultrasonic & eddy current inspections
Mechanical testing – Tensile, yield, elongation
Chemical analysis – Verification of Ti-3Al-2.5V composition
A full Material Test Certificate (MTC) is provided with each shipment.
Products provided by GNEE
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Name |
Titanium & Titanium Alloy Tube /Pipe |
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Material |
Gr1,Gr2,Gr3,Gr4,Gr5(Ti-6Al-4V),Gr7,Gr9,Gr11,Gr12,Gr23(Ti-6Al-4V Eli) |
|
Standard |
ASTM B337 ASTM B338 ASTM B861 ASTM B862 |
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Type |
Seamless,Welded |
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OD |
3-114mm or as customized |
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Wall Thickness |
0.2-50mm or as customized |
|
Length |
Max 6m |
|
End |
Plain End, Beveled End, Threaded |
|
Certificate |
EN 10204/3.1B,Raw Materials Certificate,100% Radiography Test Report,Third Party Inspection Report, etc |
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Application |
Off-Shore Oil Drilling Companies Power Generation Petrochemicals Gas Processing Specialty Chemicals Pharmaceuticals Pharmaceutical Equipment Chemical Equipment Sea Water Equipment Heat Exchangers Condensers Pulp and Paper Industry |
|
Standard |
ASTM F67 ASTM F136 etc. |
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Grade |
Gr1 Gr2 Gr3 Gr4 Gr5 Gr7 Gr9 Gr12 Gr23 |
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Process method |
Hot Rolled,Forged |
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Specification |
Diameter:5-300mm(as required) |
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Dlivery time |
7-25 days |
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Package |
Wooden case |
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Surface |
acid surface or polishing, sand blasted surface |
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Shape |
Round, flat, square, hexagonal |
|
Used |
Widely use for aerospace, industry and medical |
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Application |
1. Chemical industry
2. Petrochemical industry 3. Machining field,Automobile field,etc 4. Desalination of sea water 5. Textile printing and dyeing |
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Production Name |
Titanium plate/Titanium sheet |
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Grade |
Gr1, Gr2, Gr3,Gr4,Gr5, Gr7, Gr6,Gr9, Gr11, Gr12 ,Gr16, Gr17,Gr25 |
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Size |
All sizes can be customized |
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Application |
Metallurgy, electronics, machinery, medical treatment, chemical industry, petroleum, medical treatment, aerospace |
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Feature |
High corrosion resistance, low density, good thermal stability |
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Technology |
Hot Forged, Hot Rolled, Cold Rolled, Annealing, Pickling |
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Surface |
Bright, Polished, Pickling, Acid cleaning, Sandblasting |
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Packing |
Export Standard Woodcase |
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Delivery time |
10-25days according to the quantity and process of the product |
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Quality and test |
Hardness test, Bending test, Hydrostatic etc. |
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Material
|
Pure titanium and Titanium alloy
|
|
|
GR1/GR2/GR3/Gr4/GR5/GR7/GR9/GR12/Gr5Eli
|
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Standard
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ASTM B863/ASME SB863, ASTMF67, ASTM F136, ISO-5832-2(3) etc
|
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Shape
|
Titanium Coil Wire/Titanium Spool Wire/Titanium Straight Wire
|
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Wire Gauge
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Dia(0.1--2) *L
|
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Process
|
Bar billets-hot rolling-drawing-annealing-strength-pickling
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Surface
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Polishing, picking, acid washed, black oxide
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Main Technique
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Hot Forged; Hot Rolled; Cold drawn; Straighten etc
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Material Milling Certificate
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According to. EN 10204.3.1
Including Chemical composition and Mechanical property |
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Application
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Welding, Industry
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Processing |
CNC lather,CNC tuming,CNc Milling, SLA, 3D printing |
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Finish |
Polish, Chrome plating, sand blasting, painting, powder coating,electrophoresis, or else. as your choice |
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Size & Design |
Per customized specifications in your drawings |
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Tolerance |
0.01 to 0.05mm |
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Drawing |
Solid Works,Pro/Engineer, AutoCAD(DXF,DWG), PDF,TI |
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Application |
Car,Bicycle, Scooter, Machinary |
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Electronics, Furniture, Construction |
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Sport equipment,other industrial |
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QC System |
1.Materail: Strickly control of material selection , meet clients request |
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2.In-prosess inspection:detect product after each process finished |
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3.Final inspection :stricly quality test before items are packed |
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Lead Time |
1-2 weeks for samples,3-4 weeks for mass production |
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