More about Tantalum

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Used in a variety of electronic devices, tantalum is an easily formed and welded, ductile metal with exceptional electrical conductivity. Highly resistant to corrosion, tantalum forms a natural protective oxide layer that is particularly beneficial in the production of tantalum capacitors. Because of its unique properties, the metal also finds regular use in various surgical components, such as sutures and implants, and as a substitute for platinum.

Tantalum does not occur in its pure form in nature, but is typically obtained from tantalite, columbite and euxenite through a variety of complex processes. It is often alloyed with other metals to make aerospace and military components, and tantalum oxide is used in the manufacture of specialized optics.

Number 73 on the periodic table, tantalum has a high melting point (approximately 3,000 degrees Celsius) but can be easily drawn into various wire forms. However, although it is easily workable, tantalum is difficult to machine using turning, milling and grinding techniques. Generally, sintered carbide tools are used in conjunction with a proper lubricant during tantalum machining processes.

The corrosion resistance displayed by tantalum is similar that of glass, and it is only affected by a few substances, such as fluorine, hydrofluoric acid and certain powerful alkalis. Because of this, it is used in valve systems and containers for certain corrosive chemicals, as well as in the production of various process components.