Tantalum

Tantalum has good thermal conductivity, and is used is in the manufacture of heating elements, vacuum tubes and other high temperature parts.

Another major use of tantalum is for electronic components, and due to its absorption properties, tantalum is an excellent getter of residual gasses in evacuation tubes. Tantalum films provide very high capacitance per volume allowing miniaturization of electronics and circuitry. Tantalum capacitors are use in computers and cellular phones.

Tantalum is also famous for its resistance to corrosion by acids; in fact, below 150?C, Tantalum is almost completely immune to corrosion by aqua regia. Due to its resistance to attack by body fluids, Tantalum provides an excellent material for medical devices.

Tantalum Products

Ed Fagan Inc. stocks Tantalum Rod and Sheet in a variety of sizes. Below are some of the standard stock items. If you require other forms of Tantalum products, please call one of our materials experts; our sales people are very knowledgeable and can assist you. We can cut, slit, shear, or center less grind Tantalum to your exact specifications, and we also have tremendous versatility when it comes to custom sizes, packages, and unusual materials.

Tantalum Rod — .010″ – 2.0″

Tantalum Sheet — .005″ – .125″

Tantalum Physical Properties

Density lb/in3 0.60
gm/cm3 16.60
Melting Point °F 5425
°C 2996
Thermal Conductivity Cal/cm2/cm°C/sec 0.13
Specific Heat Cal/gm/°C 0.036
Coefficient of Linear Thermal Expansion micro-in/°F x 10-6 6.50
micro-in/°C x 10-6 3.60
Electrical Resistivity micro-ohm-cm 12.40

Tantalum Mechanical Properties

Tensile Strength KSI (Mpa)-RT 250 (1725)
KSI (Mpa)-500°C 150 (1035) –
KSI (Mpa)-1000°C 75 (515) –
Elongation % in 1.0″. –
Hardness DPH 300
Modules of Elasticity KSI 58000
Gpa 400 –

Tantalum Chemistry

  • Minimum % 99.99

Applications

  • High-temperature applications such as aircraft engines
  • Electrical devices such as capacitors
  • Surgical implants such as artificial joints and cranial plates, and surgical sutures
  • In the chemical industry e.g. for heat exchanger in boilers in which strong acids are vaporized
  • As a substitute for platinum, which is more expensive
  • In components for nuclear power plants and missiles

Tantalum Specifications

  • AMS 7849

FountainHead Alloys supplies the highest quality special purpose metals and alloys for Aerospace/Aviation, Defense, Electronics, Magnetic, Medical, Lighting, Optical, Telecommunications, Ceramics, Heat Treating, and other high-technology industries.

 

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