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Product Description
Technical details, material information and manufacturing notes for this product.
Tantalum Wire Overview
Tantalum wire is a high-performance refractory metal product.
It is widely used in electronics, medical devices, chemical processing, and vacuum furnace systems.
It offers extreme corrosion resistance, high melting point, and excellent biocompatibility.
It is the most refined form of tantalum material.
It is produced through multi-stage precision drawing processes.
This ensures high purity, stable mechanical properties, and consistent electrical performance.
1. Key Material Classifications (ASTM B365)
Tantalum wire is defined under ASTM B365 as wire below 3.18 mm diameter.
It is classified based on purity and application requirements.
Capacitor Grade
This grade has ultra-high surface purity.
It is chemically cleaned and vacuum annealed.
It is used for electrolytic capacitors in electronics.
Metallurgical / Chemical Grade
This grade has 99.95% purity.
It is used in harsh chemical and vacuum environments.
Medical Grade
This grade is fully biocompatible and non-toxic.
It is used in surgical and implantable medical devices.
2. Surface Finishes & Wire Conditions
Surface condition is critical for performance and reliability.
As-Drawn (Bright)
Retains a thin lubrication layer.
Suitable for general industrial use.
Chemically Cleaned
All surface contamination is removed.
Required for medical and vacuum applications.
Matte / Oxide Finish
Controlled oxide layer is formed.
Used in specialized furnace environments.
3. Size Range & Product Forms
Tantalum wire is available in multiple diameter ranges.
| Type | Diameter Range | Application |
| Thick Lead Wire | 1.0 mm – 3.0 mm | Furnace elements, structural pins |
| Fine Wire | 0.2 mm – 1.0 mm | Medical sutures, capacitor leads |
| Ultra-Fine Wire | ≤ 0.05 mm | Microelectronics, precision devices |
4. Primary Industrial Applications
Electronics Capacitors
Tantalum wire is widely used in electrolytic capacitors.
It provides stable electrical performance and high energy density.
Medical Applications
It is used in surgical sutures and implantable devices.
It is radiopaque and highly biocompatible.
Vacuum Furnace Systems
It is used in high-temperature vacuum environments.
It does not evaporate or contaminate furnace atmospheres.
Chemical Industry Applications
It is used for corrosion-resistant repair components.
It performs well in extreme acid environments.
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Related Technical Resources
Material guides, application notes and manufacturing knowledge from ROBUST.
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