Description
Big OD (large outer diameter) titanium welded tubes are
manufactured from high-quality titanium metal and designed for
applications requiring high strength, low weight, and exceptional corrosion resistance.
These tubes, produced to ASTM B862 standards, are widely used in medical, industrial, and aerospace fields where durability and performance are critical.
Compared with traditional steel or aluminium tubes, titanium welded
tubes offer:
Superior corrosion resistance
Excellent mechanical strength
Lightweight design
High temperature and fatigue resistance
Titanium Gr1 welded tubes are commonly used in medical implants, while Ti Gr2 welded tubes are popular in industrial equipment such as heat exchangers, condensers, and chemical process systems.
Physical Properties
| Grade | Tensile Strength (MPa, Min) | Yield Strength (MPa, Min) | Elongation (%) |
|---|
| Gr1 | 240 | 170 | 24 |
| Gr2 | 345 | 275 | 20 |
| Gr3 | 450 | 380 | 18 |
| Gr4 | 550 | 483 | 15 |
| Gr5 | 895 | 828 | 10 |
| Gr7 | 400 | 275 | 18 |
| Gr9 | 620 | 483 | 15 |
| Gr12 | 483 | 348 | 18 |
| Gr23 / Gr5-ELI | 793 | 759 | 10 |
Chemical Composition
| Grade | Fe (max) | O (max) | N (max) | C (max) | H (max) | Pd (max) | Al (%) | V (%) | Ni (max) | Mo (max) |
|---|
| Gr1 | 0.20 | 0.18 | 0.03 | 0.08 | 0.015 | – | – | – | – | – |
| Gr2 | 0.30 | 0.25 | 0.03 | 0.08 | 0.015 | – | – | – | – | – |
| Gr3 | 0.30 | 0.35 | 0.05 | 0.08 | 0.015 | – | – | – | – | – |
| Gr4 | 0.50 | 0.40 | 0.05 | 0.08 | 0.015 | – | – | – | – | – |
| Gr5 | 0.40 | 0.20 | 0.05 | 0.08 | 0.015 | – | 5.5–6.7 | 3.5–4.5 | – | – |
| Gr7 | 0.30 | 0.25 | 0.03 | 0.08 | 0.015 | 0.12–0.25 | – | – | – | – |
| Gr9 | 0.25 | 0.15 | 0.03 | 0.08 | 0.015 | – | 2.5–3.5 | 2.0–3.0 | – | – |
| Gr12 | 0.30 | 0.25 | 0.03 | 0.08 | 0.015 | – | 0.6–0.9 | 0.2–0.4 | – | – |
| Gr23 | 0.25 | 0.03 | 0.03 | 0.08 | 0.0125 | – | 5.5–6.5 | 3.5–4.5 | – | – |
| Ti | Balance | | | | | | | | | |
Advantages
High Strength & Lightweight: Combines excellent mechanical strength with low density for
efficient performance.
Superior Corrosion Resistance: Performs well in seawater, chemical, and high-humidity
environments.
High Temperature Resistance: Maintains stability and strength at elevated temperatures.
Excellent Weldability: Ti Gr2 welded tubes can be easily joined with other metals or
components.
Fatigue Resistance: High fatigue limit makes them suitable for cyclic load conditions.
Biocompatibility: Safe for medical and biological use, including implants.
Aesthetic Appearance: Smooth metallic finish suitable for visible or decorative
applications.
Applications
Big OD titanium welded tubes are used in a wide range of
industries, including:
Aerospace: Airframe structures, exhaust ducts, and hydraulic systems
Automotive: Exhaust systems, suspension components, and heat exchangers
Medical: Surgical instruments, implants, and medical devices
Industrial: Chemical processing, condensers, evaporators, and pressure vessels
Marine: Seawater desalination, ship piping, and underwater components
Energy: Power generation and heat recovery systems
Standards
ASTM B862 – Welded Titanium and Titanium Alloy Tubes
ASTM B337 / B338 – Seamless and Welded Titanium Tubes
ASME SB-862 – Pressure Vessel and Heat Exchanger Applications
Available Grades
Titanium Gr1 – Best formability, moderate strength
Titanium Gr2 – Balanced corrosion resistance and weldability
Titanium Gr7 / Gr12 – Enhanced corrosion resistance for chemical industries
Packaging
All tubes are packed in strong wooden cases or bundles, protected with plastic film to prevent oxidation and mechanical damage during shipment.
