Material : 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″


Capacitors; surgical implants and instruments; ink jet nozzles.

Tantalum Properties

Tantalum Physical Properties


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)


% in 1.0″.


DPH 300

Modules of Elasticity

KSI 58000
  Gpa 400


Tantalum Chemistry

Minimum % 99.99


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.