Tungsten is a rare metal with high melting point, which can improve the high temperature hardness of steel.

Molybdenum wire is used in profile cutting, H2 furnace, heater rod guide rod hook, mandrel, wire, lead, etc.

Mainly refers to a kind of consumables made of precious metals such as molybdenum, which move continuously with high voltage electric field in WEDM. That is to say, the fine wire which moves continuously in WEDM machine tool is called electrode wire (also called electrode), which can remove the workpiece by pulse spark discharge and cut metal forming.

Niobium is a metal element. Chemical symbol Nb, atomic number 41, atomic weight 92.90638, belongs to the periodic system V B family.