Tantalum Products | Refractory Metal
Tantalum Wire
Ultra-precision tantalum wire drawn to exacting tolerances for electronic, medical, and industrial applications. Available in diameters from 0.025mm to 3.0mm with excellent surface finish and dimensional consistency. Our tantalum wire is the material of choice for capacitor anode leads, surgical sutures, heating elements, vacuum furnace filaments, and chemical processing instrumentation. Manufactured per ASTM B365 with controlled grain size and mechanical properties for optimal performance.
✅ Customized-made is available
About Tantalum Wire
Our tantalum wire is precision-drawn through multiple stages of die drawing with intermediate annealing to achieve exacting diameter tolerances, superior surface finish, and controlled mechanical properties. Each production lot undergoes rigorous testing including tensile testing, dimensional measurement, surface inspection, and chemical analysis. Our tantalum wire products are trusted by leading capacitor manufacturers, medical device companies, and industrial equipment producers worldwide.
Features
- Diameter range: 0.025mm - 3.0mm
- Ultra-precision drawing process
- 99.95%+ purity tantalum
- Excellent surface finish
- Consistent mechanical properties
- Suitable for capacitor manufacturing
- Biocompatible for medical sutures
- ASTM B365 compliant
- Spool or coil packaging available
- Custom diameters and lengths
Specifications
| Material | Tantalum (Ta), UNS R05200 |
|---|---|
| Purity | ≥99.95% |
| Diameter Range | 0.025mm - 3.0mm |
| Tolerance | ±0.005mm (fine wire), ±0.01mm (standard) |
| Surface Finish | Bright, clean, oxide-free |
| Tensile Strength | 300-700 MPa (depending on temper) |
| Elongation | 10-30% (depending on temper) |
| Spool Sizes | DIN 100, 125, 160, 200 |
| Standard | ASTM B365 |
| Testing | Tensile, dimensional, visual |
How Tantalum Wire is Manufactured — Production Process
Our tantalum wire is produced through a precision drawing process that transforms rod stock into ultra-fine wire with diameters as small as 0.1mm while maintaining exceptional purity, surface quality, and mechanical consistency. The multi-stage drawing process is carefully controlled to prevent surface defects and ensure uniform grain structure.
Production begins with high-purity tantalum rod that has been forged and annealed to achieve an optimal starting microstructure. The rod undergoes progressive cold drawing through diamond or carbide dies, with each pass reducing the diameter by a controlled percentage. Intermediate vacuum annealing at 800–1000°C restores ductility and prevents work hardening from exceeding material limits. The drawing process is performed at controlled speeds to minimize surface friction and heat generation.
Final wire processing includes stress-relief annealing to achieve target mechanical properties, straightening, and spooling. Each production lot undergoes tensile testing, dimensional measurement with laser micrometers, surface inspection under magnification, and chemical composition verification. The wire meets ASTM B365 specifications for tantalum and tantalum alloy wire.
Applications of Tantalum Wire
Tantalum wire serves specialized applications across electronics, medical, and industrial sectors:
Capacitor Lead Wires
Tantalum wire is the standard material for lead wires in tantalum electrolytic capacitors, which are essential components in smartphones, laptops, automotive electronics, and military equipment. The wire's excellent conductivity, solderability, and compatibility with tantalum pentoxide dielectric layers ensure reliable capacitor performance over decades of service.
Surgical Sutures and Markers
Tantalum wire is used as radiopaque suture material and tissue markers in surgical applications. Its biocompatibility and visibility under X-ray and CT imaging allow surgeons to mark tumor locations, anastomosis sites, and surgical boundaries that remain visible in post-operative imaging without causing adverse tissue reactions.
Vacuum Furnace Heating Elements
High-purity tantalum wire is formed into heating elements for vacuum furnaces operating at temperatures up to 2000°C. The wire's resistance to embrittlement and its stable electrical resistivity at high temperatures ensure consistent furnace performance and long element life in sintering, brazing, and heat treatment applications.
Corrosion-Resistant Mesh and Filters
Tantalum wire is woven into mesh and filter cloth for corrosive chemical filtration applications. These filters provide exceptional resistance to acid environments while maintaining fine filtration precision, making them suitable for pharmaceutical, chemical, and electrochemical processing.
Frequently Asked Questions about Tantalum Wire
Q: What is the finest tantalum wire diameter you can produce?
A: We can produce tantalum wire down to 0.025mm (25 microns) diameter with tight tolerances. This ultra-fine wire is used for capacitor anode leads and microelectronic applications.
Q: Is tantalum wire used in capacitor manufacturing?
A: Yes, tantalum wire is essential for tantalum electrolytic capacitor manufacturing. The wire serves as the anode lead that connects the sintered tantalum pellet to the external circuit. High purity and consistent diameter are critical.
Q: Can tantalum wire be used for surgical sutures?
A: Absolutely. Tantalum wire is biocompatible and radiopaque, making it ideal for surgical sutures and markers. It's FDA-approved for implant use and causes minimal tissue reaction.
Q: What temper options are available?
A: We offer tantalum wire in annealed (soft), half-hard, and hard temper conditions. Annealed wire is most formable, while hard wire has higher tensile strength for structural applications.
Q: How is tantalum wire packaged?
A: Standard packaging is on precision spools (DIN 100-200) or coils. We can also provide cut lengths, straightened rods, or custom packaging per your requirements.
