What are TIG Tungsten Electrodes

Tungsten electrodes are a key component of TIG welding, and are used to produce the electric arc that melts the metal and forms the weld. Tungsten is a rare and extremely hard metal with a high melting point, making it an ideal material for use as an electrode in high-temperature welding applications.

There are several types of tungsten electrodes used in TIG welding, each with their own unique properties and characteristics. The most common types of tungsten electrodes are:

Pure tungsten: This is the most basic type of tungsten electrode and is composed of 100% tungsten. It is used for welding aluminum and magnesium alloys and is also used for AC welding of non-ferrous metals.

Thoriated tungsten: This type of tungsten electrode is alloyed with thorium, which increases its resistance to high-temperature melting and improves arc stability. It is commonly used for DC welding of carbon and stainless steel.

Ceriated tungsten: This type of tungsten electrode is alloyed with cerium and is known for its excellent arc stability and low burn-off rate. It is commonly used for DC welding of non-ferrous metals.

Lanthanated tungsten: This type of tungsten electrode is alloyed with lanthanum and is known for its long life and ease of starting. It is commonly used for DC welding of non-ferrous metals.

Zirconiated tungsten: This type of tungsten electrode is alloyed with zirconium and is known for its high current capacity and excellent resistance to contamination. It is commonly used for AC welding of aluminum and magnesium alloys.

The choice of tungsten electrode depends on the specific welding application and the type of metal being welded. Each type of tungsten electrode has its own advantages and disadvantages, and welders should choose the appropriate electrode based on the specific characteristics of the metal being welded and the desired properties of the weld.