Electrodes for welding and pressure welding

High current resistance, high temperature resistance, high deformation resistance
In TIG welding, which is used for precision welding, tungsten is used as the electrode in the torch because of its high melting point and low consumption. Both tungsten and molybdenum are used for the resistance welding electrodes used in the thermal crimping of wire harnesses and spot welding of metal plates. Resistance welding is a method in which an electrode heated by passing an electric current is pressed against metal for pressure welding, so tungsten and molybdenum are generally used because of their excellent resistance to high current, high melting point, and deformation resistance.

Applications TIG welding electrodes, Resistance welding (spot welding) electrodes, etc.

List of tungsten and molybdenum for welding and pressure welding

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W Materials Purity(%) Additive Notes
EX 99.95 min. K It contains few impurity gases, has excellent resistance to high-temperature deformation and corrosion to deposited metals such as Al, Ni, and Cr, and has a longer service life.
CY(PFW) 99.95 min. None The most conventional pure tungsten material. Among tungsten, it has good workability, excellent corrosion resistance, and low impurity gas content.
4N-W   99.99 min. None It is the highest level of high-purity tungsten in the world.
5N-W 99.999 min. None It is the highest level of high-purity tungsten in the world.
EP  99.95 min. K This material is ideal as a structural material at high temperatures. Its fine crystallinity makes it highly resistant to impact and highly suitable as an electrode for pressure welding.

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Mo Materials Purity(%) Additive Nones
MOP 99.95 min. None It is the most conventional pure molybdenum material, with a high melting point and excellent high-temperature strength. It also has high thermal conductivity, low thermal expansion, and excellent workability.
Tungsten technical information
Molybdenum technical information