Description
xGrade 2 Titanium Capillary Tubing: Micro-Bore Tube
Micro-bore Grade 2 titanium capillary tubing for the finest fluid paths. Supplied from 0.5 to 3.0 mm outside diameter in thin walls, seamless and available straight precision-cut or continuous coiled, with clean smooth bores for medical devices, analytical instruments, micro-sensors and precision dispensing.
What Is Grade 2 Titanium Capillary Tubing?
Grade 2 titanium capillary tubing is ultra-small-diameter tubing drawn from commercially pure titanium. It combines a fine, controllable bore with the corrosion resistance, non-magnetic character and biocompatibility of Grade 2 titanium, while remaining ductile enough for precise tip forming, micro-bending and coiling. Where ordinary fine metal tubes clog, kink or corrode, titanium capillary keeps a clean, repeatable micro-fluid path in medical, analytical and instrument-grade assemblies.
Key Features
Micro-Bore Control
Fine outside diameters and internal bores for repeatable micro-fluid and gas paths.
Smooth, Clean Bore
Smooth inner wall supports consistent flow, easy flushing and cleanroom-grade assembly.
Biocompatible and Non-Magnetic
Suited to medical-device, laboratory and sensor environments where magnetic materials are excluded.
Ductile for Fine Forming
Takes tip forming, necking, flaring, micro-bending and coiling at small scale without cracking.
Corrosion Resistance
Withstands reagents, saline, body-contact environments and atmospheric corrosion.
Straight or Coiled
Precision-straightened cut lengths or continuous coil for long, joint-free runs.
Manufacturing and Quality Control
Seamless Cold-Drawn Capillary
Capillary is produced seamless by repeated cold drawing through precision dies, giving a uniform wall, a smooth bore and the structural integrity needed at sub-3 mm scale.
Straightened and Coiled Supply
Fine tube is supplied either precision-straightened and cut to fixed lengths, or wound as continuous coil on reels to eliminate joints in long instrument runs.
Condition, Cleanliness and Inspection
Annealed or Stress-Relieved Temper
Lengths are annealed or stress-relieved to suit subsequent straightening, tip forming and assembly.
Cleanliness and Surface
Pickled, polished or bright finishes are available, with ultrasonic cleaning and clean packaging for medical and analytical orders.
Inspection and Traceability
Dimensional and Bore Inspection
Outside diameter, wall and bore condition are checked batch by batch against the ordered specification.
Surface and Cleanliness Checks
Inner and outer surfaces are inspected for cleanliness, inclusions and mechanical damage before packing.
Batch Documentation
Heat and lot traceability and an EN 10204 3.1 mill test certificate are available for every batch.
Technical Specifications
Dimensional Range
| Material | Grade 2 commercially pure titanium |
|---|---|
| Applicable standard | ASTM B337 / ASME SB-337 |
| Outside diameter | 0.5–3.0 mm; finer sizes to order |
| Wall thickness | 0.1–0.5 mm typical; gauges to drawing |
| Supply | Seamless cold-drawn; straight or coiled |
| Condition | Annealed / stress-relieved |
| Length | Precision-cut straight lengths or continuous coil |
| Surface | Pickled / polished / bright; cleaned for cleanroom use |
| Ends | Burr-free cut; tip-formed, necked or closed on request |
| Certification | EN 10204 3.1 mill test certificate |
For larger 3–25 mm precision lines, see our small-diameter Grade 2 titanium tube. 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 Precision-Cut Lengths
Fine straight lengths cut burr-free for automated assembly and instrument building.
Coiled Capillary on Reels
Continuous coil wound on reels to remove joints from long instrument and fluid runs.
Tip-Formed Micro-Parts
Necked, flared, closed, bent or shaped micro-components produced to drawing.
Applications
Medical and Surgical Devices
Non-implant medical and surgical devices, minimally invasive instruments, guide and delivery sheaths, endoscopic components and fluid-delivery micro-lines, supported by material documentation on request.
Analytical and Laboratory Instruments
HPLC and chromatography lines, spectrometry and analytical instrumentation, sample-delivery paths and laboratory automation requiring a clean, inert micro-bore.
Micro-Sensors, Probes and Measurement
Micro-sensor sheaths, fine probe bodies, temperature and pressure measurement tubes and thermowell-style elements protected by a thin titanium wall.
Micro-Fluidic and Precision Dispensing
Micro-fluidic circuits, precision dispensing nozzles, atomizer jets and fine spray or dosing channels that demand a repeatable internal bore.
Aerospace and Electronics Micro-Assemblies
Fine instrument lines, micro-actuation paths and electronics cooling micro-channels where non-magnetic, lightweight materials are required.
Value-Added Fabrication
- Burr-free precision cut-to-length
- Tip forming, necking, flaring and end closing
- Micro-bending, shaping and coiling
- Ultrasonic cleaning and clean packaging
- Polished and bright finishes
- Reel, tray or custom carrier packaging
Why Choose RapidKeen Grade 2 Titanium Capillary Tubing
- Dedicated sub-3 mm micro-bore range
- Seamless cold-drawn, straight or coiled
- Clean smooth bores for medical and analytical use
- Heat and lot traceability with mill documentation
- Prototype pieces through production volumes
- Export-ready clean protective packaging
Frequently Asked Questions
What is Grade 2 titanium capillary tubing used for?
It is used wherever a very small, clean and corrosion-resistant fluid or gas path is required: medical and surgical devices, HPLC and analytical instruments, micro-sensors and probes, micro-fluidic dispensing and fine instrument lines.
Is capillary supplied straight or coiled?
Both. It can be precision-straightened and cut to fixed lengths for automated assembly, or wound as continuous coil on reels for long, joint-free runs.
Can capillary tube be tip-formed or bent?
Yes. Supplied annealed or stress-relieved, it takes tip forming, necking, flaring, end closing and tight micro-bends, and can be supplied as finished micro-parts to drawing.
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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