Tantalum Wire Sizes and Supply Forms

NiTiCu supplies 99.95% tantalum wire to ASTM B365 in coils, spools and cut lengths. Use the following details to specify your enquiry.

Listed diameter range	0.1–3.0 mm; enquire about other sizes
Order dimensions	Diameter, tolerance and required length or weight
Supply form	Coil, spool or straight cut lengths
Finish and condition	Specify the required surface finish and delivery condition
Inspection	Include the material grade and required test documents in your enquiry

Request a Tantalum Wire Price

For a comparable quotation, send the diameter, tolerance, material grade, supply form, total quantity and delivery destination. Ask for the price unit, minimum order quantity, availability and lead time for that exact specification.

Looking for 1 mm tantalum wire?

1 mm is within the listed diameter range. Specify the diameter tolerance, coil or cut-length requirement, and total quantity so availability and pricing can be confirmed for your order.

Request a wire quotation

Chemical Composition (Typical, wt%)

Element	Content (%)
Tantalum (Ta)	≥99.95
Oxygen (O)	≤0.01
Carbon (C)	≤0.005
Nitrogen (N)	≤0.005
Hydrogen (H)	≤0.0015
Iron (Fe)	≤0.01
Nickel (Ni)	≤0.005
Molybdenum (Mo)	≤0.01
Silicon (Si)	≤0.005
Tungsten (W)	≤0.05

All materials are tested using ICP-OES, LECO, and GDMS methods, ensuring complete control over trace elements and compliance with strict industry requirements. COA (Certificate of Analysis) provided with every shipment.

Technical Specifications

Standard: ASTM B365 (Rod and Wire form)
Purity: ≥99.95% (High Purity Grade R05200 or Electron-Beam Melted R05400)
Density: 16.65 g/cm³
Melting Point: 3017°C
Boiling Point: 5458°C
Electrical Resistivity: ~13.5 µΩ·cm at 20°C
Thermal Conductivity: 57 W/m·K
Modulus of Elasticity: 186 GPa
Tensile Strength (Annealed): ≥200 MPa
Tensile Strength (Cold-worked): ≥600 MPa
Elongation (Annealed): ≥30%
Diameter Range: 0.1 mm to 3.0 mm (Other sizes upon request)
Surface Finish: Bright, Cleaned, Chemically Polished, or Black Annealed
Packing: Vacuum-sealed with anti-static protection, inert-gas available

Advantages of Tantalum Wire

✅ Unmatched Corrosion Resistance
Tantalum wire resists almost all acids at room temperature, including hydrochloric, nitric, and sulfuric acids. This makes it ideal for use in aggressive chemical processing environments.
✅ High Melting Point
With a melting point of over 3000°C, tantalum wire remains structurally stable in high-temperature applications such as vacuum furnaces and aerospace propulsion systems.
✅ Excellent Biocompatibility
Tantalum is inert inside the human body and widely used for surgical implants, dental pins, and bone repair components.
✅ Superior Electrical Conductivity
Its low resistivity makes it perfect for capacitors, thermocouples, and specialized electronic leads.
✅ Reliable Mechanical Performance
Tantalum wire can be cold-drawn into very fine diameters while maintaining ductility and high tensile strength.

Applications of Tantalum Wire

Vacuum and High-Temperature Furnaces
Used in heating elements, hooks, crucible suspensions, and shielding for ultra-high vacuum systems.
Semiconductor & Thin Film Deposition
Tantalum wire is employed in sputtering targets, evaporation boats, and getters for high-purity vacuum deposition processes.
Medical & Biological Implants
Utilized for vascular stents, orthopedic pins, pacemaker leads, and reconstructive surgery elements.
Capacitor Manufacturing
A critical material for the production of tantalum capacitors due to its dielectric properties and thermal stability.
Chemical Industry
Tantalum wire is used in anodes, cathodes, and thermowells exposed to highly corrosive fluids and gases.
Additive Manufacturing (3D Printing)
Applied as a wire feedstock in electron beam melting and laser metal deposition for high-performance component prototyping.

Customization & Machining

We offer full customization based on your engineering drawings or process specifications, including:

Wire straightening
Precision cut lengths
Micro-coiling
Fine wire spooling
Diameter tolerance ≤ ±0.01 mm

Our in-house machining and QA teams ensure each order is delivered with tight dimensional control and surface consistency.

Quality Control & Documentation

Each batch of tantalum wire undergoes:

Full traceability to raw material origin
Dimensional and mechanical inspection
Purity and gas content testing (optional)
Third-party certification upon request
Compliance with ISO 9001 and ASTM B365 standards

COA, MSDS, and RoHS documentation are included as standard with every shipment.

Packaging & Delivery

Form: Coils, Spools, or Straight Rods
MOQ: No minimum for in-stock sizes
Packing: Double-sealed vacuum bags or inert gas (argon) on request
Lead Time: 7–10 days (standard), 15–20 days (custom)

Global delivery via FedEx/DHL/UPS with export documentation and HS Code compliance.

Why Choose Our Tantalum Wire?

With decades of expertise in refractory metal production and export, we supply critical materials to clients across:

Aerospace manufacturers
Semiconductor labs
University research centers
Military R&D
Medical OEMs

We are known for fast response, competitive pricing, and consistent technical support.

Tantalum is also highly regarded for its biocompatibility, making it ideal for surgical implants and pacemaker components as documented by NCBI.

In the electronics sector, tantalum wire is commonly drawn into leads for tantalum capacitors, which offer superior energy density and stability (Electronics Notes).

📞 Contact Us

📧 Email: sales@niticu.com
📞 Phone / WhatsApp / WeChat: +86 13335373172
🏭 Factory: Baotai Road Industrial Park, High-tech Zone, Baoji City, Shaanxi, China
🌐 Website: https://niticu.com

📩 Contact us now for pricing, samples, and expert technical support — we respond within 24 hours.

Related Materials and Enquiries

Review EBM versus powder-metallurgy tantalum when choosing a manufacturing route. For bar stock, see ASTM B365 tantalum rod, or browse our tantalum products. Send your wire specification to discuss supply options and pricing.

Tantalum Wire

Tantalum Wire – ASTM B365, 99.95%

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