Tantalum (Ta) Capillary / Tantalum Micro Tube


New product

Tantalum capillary, also named tantalum micro tubing and tantalum fine tube, can be used as the filament lead tube of the cathode insulator in an x-ray tube, as a marker band in medicine and can be used as as thermocouple tube. Heeger Materials  have been providing high quality Tantalum Capillary for over 20 years. 

More details

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Data sheet

Purity99.95% ,99.99%
MaterialTa, Ta10W, Ta2.5W, Ta40Nb,UNS R05200, R05400, R05255, R05252, R05240
ConditionAnnealed, Unannealed

More info

Application of Tantalum Capillary / Tantalum Micro Tube:

• Used in laboratory equipment.
• Used as a substitute for platinum.
• Used as the filament lead tube of the cathode insulator in an x-ray tube. 
• Used in liquid tantalum electrolytic capacitors.


Catalog No.



Outer Diameter (OD): 0.2~8mm

Wall Thickness (WT): 0.015 ~ 1mm

Length (L): 1mm~1000mm

Tolerance: OD, +/-0.003mm. WT, +/-0.005mm. L, +/-0.05mm


>=99.95% or 99.99%

For larger Tantalum tubing, please check tantalum tubing.


Chemical Composition:

Elment C O N H Fe Mo Nb Ni Si Ti W
R05400 (%,Max)
R05255 (Ta10W) (%,Max)0.010.0150.010.00150.–11.0
R05452 (Ta2.5W) (%,Max)0.010.0150.010.00150.–3.5
R05240 (Ta-40Nb) (%,Max)–

Ordering Information of Tantalum Capillary 

Orders for material under this specification shall include the following information:

  • Quantity
  • UNS grade (See above Tantalum and Tantalum Alloy UNS Grade)
  • Type (welded or seamless)
  • Dimensions (OD, ID, L or OD, WT, L or ID, WT, L)
  • Nondestructive test requirements, if any
  • Additions to the specification and supplementary requirements, if any


Our Tantalum capillary will be packed in wooden case supported with soft materials to ensure that the products thus packed will not shift inside the cases.

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