Tantalum Wire

Your Partner in High-Quality Tantalum Wire. Admat produces exceptional tantalum wire for diverse applications.  We start with melted ingot (RO5200) and sintered bar (RO5400).  Sinter bars are typically used in high temperature processes or applications where grain size control is important. The ingot or bar is forged into a long rod and then meticulously drawn through a series of progressively smaller dies to achieve the desired diameter. Cleaning and annealing are performed throughout the process to eliminate impurities and yield proper mechanical properties.  We offer spools for smaller diameter wires and loose coils for larger diameters.

Advancing Tantalum Alloy Wire Technology.  Admat takes pride in its leadership in tantalum alloy wires, particularly Ta7.5W (7.5% tungsten) and Ta10W (10% tungsten). Designed specifically for chlorinator springs, these alloys offer the perfect blend of properties needed for such demanding environments. By leveraging our expertise, you can ensure your application receives the optimal tantalum wire solution.

Uses of Tantalum Wire

Tantalum wire offers superior performance in the following applications:

  • Chlorinator springs: Our tantalum wire provides ideal mechanical properties and corrosion resistance for safe, high-performing chlorinator springs. We specifically engineer tantalum wire for this application, creating product chemistry and microstructures that safeguard against premature component failure. In fact, customers have proven that Admat’s spring wire continues to operate long after competitors’ products have failed during third party testing.
  • Tantalum capacitor lead wire: This has been the major application for tantalum wire.  It typically uses sinter bar derived wire for its resistance to grain growth at high temperature and resistance to bending fatigue.
  • 3D printing: Both Directed Energy Deposition (DED) and Electron Bean Additive Manufacturing (EBAM) can use wire as a feed material.
  • Medical markers for surgeons: Tantalum bars and rods resist chemicals in bodily fluids and are nonirritating to the touch. Surgeons use tantalum tools in bone, eye, and cranial surgeries. Tantalum rods and bars act as markers in various types of cancer treatments.
  • Evaporation Pellets: Short-length tantalum wire is used as evaporation media for the manufacturing of semiconductors, magnetic memory devices, optical and corrosion-resistant coatings.
  • Vacuum furnace heating elements and hardware:  high melting point and good mechanical strength make it a perfect choice for high temperature furnace.  The product in this application is typically grain stabilized for improved life.
  • Filaments and wires for light bulbs: Superior ductility allows tantalum wire’s use in a wide variety of light bulbs as an oxygen getter.

Choose Admat for all your tantalum rod, bar, and wire needs. With over 50 years of experience working with refractory metals, Admat provides a broad range of refractory metals and products including tantalum bars, tantalum rods, and tantalum wire. To learn more about our product line and how we can serve your industry, Request a Quote today.

Admat is also the leading supplier of Tantalum 7.5% Tungsten (Ta7.5W) and Tantalum 10% Tungsten (Ta10W) wires. These products are ideal for use in highly corrosive environments, and as an oxygen getter in lighting applications. Learn more about our Tantalum 7.5% Tungsten Spring wire.

High strength and grain stabilized wire is also available for specialty applications such as heating elements or fasteners in high temperature furnaces.

Furthermore we can supply wires on a variety of spools sizes and diameters. For example we can supply 4″ spools with hundreds of feet or 12″ spools with thousands of feet of wire.

Tantalum Wire Specifications

Available Sizes for Tantalum Wire

Thickness Diameter

  • Spooled – .010″ to .080″
  • Loose Coil – .030″ to .125″
  • Straight Lengths – .060″ to 10″

Available Alloys:

  • Tantalum
  • Tantalum 2.5% Tungsten
  • Tantalum 7.5% Tungsten
  • Tantalum 10% Tungsten
  • Tantalum 40% Niobium
  • Furnace Grade Tantalum

Common Specifications

  • ASTM B365 R05200
    » Electron Beam Melted
  • ASTM B365 R05400
    » Powder Metallurgy Grade
  • ASTM B365 R05252
    » Tantalum 2.5% Tungsten Alloy
  • ASTM B365 R0255
    » Tantalum 10% Tungsten Alloy
  • ASTM F560 R05200
    » Medical Grade Tantalum

Available Purities:
Commercial Grade ( ASTM )

  • Commercial Grade (ASTM)
  • 3N 99.90% | 3N5 99.95%
  • 4N 99.99% | 4N5 100%
  • 5N 100%