Description
xGrade 2 Titanium Tube: 3-25mm Small-Diameter Tubing
Small-diameter Grade 2 titanium tube manufactured for precision fluid control, instrumentation and compact engineering systems. Available from 3.0 to 25.0 mm outside diameter with a 0.5–4.0 mm wall range, as seamless cold-drawn or welded and cold-reduced tubing, supplied annealed and cut to length with clean, deburred ends.
What Is Grade 2 Titanium Tube?
Grade 2 titanium tube is made from commercially pure titanium and is the most widely used titanium tubing for precision industrial work. It balances dependable strength with good ductility, offers excellent resistance to seawater, chlorides and oxidizing media, and is naturally non-magnetic. At 4.51 g/cm³ — roughly 56% the density of steel — small-diameter Grade 2 titanium tubing reduces component weight while delivering long service life in demanding control circuits and instruments.
Key Features
Corrosion Resistance
Withstands seawater, chloride solutions, oxidizing chemicals and atmospheric corrosion for long, low-maintenance service.
High Strength-to-Weight Ratio
Strong thin walls at 4.51 g/cm³ help cut weight in handheld, mobile and aerospace assemblies.
Non-Magnetic and Biocompatible
Suitable for instruments, medical devices and sensitive sensors where magnetic materials cannot be used.
Ductile, Weldable and Formable
Annealed temper supports clean bending, flaring, expanding, coiling and welding without cracking.
Broad Temperature Service
Retains stable performance across cryogenic and elevated-temperature fluid systems.
Low Lifecycle Cost
Long corrosion life and minimal maintenance replace frequent change-outs of ordinary metal tubing.
Manufacturing and Quality Control
Seamless Cold-Drawn Construction
Seamless small-diameter Grade 2 titanium tube is cold drawn over a mandrel for a uniform structure, smooth inner bore and consistent wall. It is preferred for high-integrity hydraulic lines, fuel control and clean fluid paths where an internal weld bead is not acceptable.
Welded and Cold-Reduced Construction
Welded Grade 2 titanium tube uses a longitudinal weld followed by cold reduction and full annealing. The result is consistent wall thickness, good surface quality and an economical option for thinner gauges and larger diameters within the 3–25 mm range.
Condition, Finish and Inspection
Annealed Temper
Every length is supplied fully annealed, giving stable, repeatable behavior in downstream bending, flaring and coiling.
Surface Finishes
Pickled and annealed, mechanically polished or bright annealed surfaces match cosmetic, cleanliness or cleanroom requirements.
Inspection and Lot Traceability
Nondestructive and Pressure Testing
Eddy-current or ultrasonic inspection is applied along the weld and wall, and hydrostatic pressure testing is available for specified orders.
Batch Documentation
Each heat is tracked through production, with chemical and mechanical records and an EN 10204 3.1 mill test certificate available for every batch.
Technical Specifications
Dimensional Range
| Material | Grade 2 commercially pure titanium |
|---|---|
| Applicable standards | ASTM B338 / ASME SB-338; ASTM B337 / ASME SB-337 |
| Outside diameter | 3.0–25.0 mm |
| Wall thickness | 0.5–4.0 mm; custom gauges available |
| Construction | Seamless cold-drawn; welded and cold-reduced |
| Condition | Annealed (bright annealed available) |
| Length | Cut to length; straight lengths or continuous coil |
| Surface | Pickled and annealed / polished / bright annealed |
| Ends | Square-cut and deburred; flared or reduced ends available |
| Certification | EN 10204 3.1 mill test certificate |
For finer micro-bore sizes below 3 mm, see our Grade 2 titanium capillary tubing. For 25–300 mm industrial lines, see our 25–300 mm medium-diameter titanium pipe. Browse all Grade 2 titanium tubing.
Mechanical and Physical Properties
| Tensile strength | ≥ 345 MPa (50 ksi) |
|---|---|
| Yield strength, 0.2% offset | ≥ 275 MPa (40 ksi) |
| Elongation | ≥ 20% |
| Hardness | 80 HRB max |
| Density | 4.51 g/cm³ |
| Melting point | approx. 1665 °C |
| Modulus of elasticity | approx. 105 GPa |
| Thermal conductivity | approx. 16.4 W/(m·K) |
| Thermal expansion coefficient | approx. 8.6 µm/(m·°C) |
Available Forms
Straight Cut-to-Length Tubes
Fixed lengths, square-cut and deburred, ready to enter assembly or machining.
Coiled Titanium Tubing
Continuous lengths reduce the number of joints in long fluid-control and instrument runs.
End-Formed and Fabricated Parts
Bent, flared, reduced, drilled or polished components produced directly from drawing.
Applications
Medical Devices, Probes and Instrumentation
Small-bore Grade 2 titanium tube is used in non-implant medical devices and instruments, probe bodies, sensor protection tubes and analytical equipment, supported by material documentation on request.
Hydraulic, Pneumatic and Aerospace Control Lines
Seamless lengths serve hydraulic and pneumatic control tubing, hydraulic oil circuits and aerospace fuel control lines where pressure integrity, light weight and corrosion resistance are essential.
Compact Cooling and Instrument Thermal Circuits
Small-bore tube serves compact cooling loops, instrument and electronics thermal circuits, oil cooling lines and small heat-transfer assemblies where space is tight.
Bicycle Frames and Lightweight Structures
The 3–25 mm range is formed into bicycle frame tubes and lightweight structural components that benefit from titanium’s low weight, fatigue strength and corrosion durability.
Precision Consumer Assemblies
Precision-drawn Grade 2 titanium tube is used in vaporizer and atomizer device sleeves and other precision housings requiring a smooth bore and stable dimensions.
Value-Added Fabrication
- Cut-to-length and precision sawing with deburred ends
- CNC bending and coil forming
- Flaring, expanding and reducing (swaging)
- Drilling, punching and end forming
- Mechanical polishing and bright finishing
- Straight or coiled supply with protective custom packaging
Why Choose RapidKeen Grade 2 Titanium Tube
- One source for the full 3–25 mm small-diameter range, seamless or welded
- Consistent annealed temper for predictable forming on every order
- Heat and lot traceability with mill documentation
- Prototype quantities through full production volumes
- Export-ready paperwork and protective packaging for international delivery
Frequently Asked Questions
Seamless or welded Grade 2 titanium tube — which should I choose?
Seamless cold-drawn tube offers the smoothest bore and highest pressure integrity, making it the standard for hydraulic, fuel and clean-fluid lines. Welded and cold-reduced tube provides consistent walls at lower cost for thinner gauges and less demanding fluid transfer.
Can Grade 2 titanium tube be bent, flared and coiled?
Yes. Supplied in the annealed condition, Grade 2 titanium tubing bends, flares, expands, reduces and coils cleanly, and it welds with standard titanium welding practice.
Which outside diameters and wall thicknesses are available?
The standard range covers 3.0–25.0 mm outside diameter with walls from 0.5–4.0 mm. Custom gauges, coiled stock and cut lengths are produced to order.
Shipping & Return
xReturns Policy
You may return items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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