Tungsten and molybdenum are two high temperature resistant metals, together with tungsten and molybdenum, representing an industry, the refractory metal industry. Other refractory metals are tantalum, zirconium, titanium, tantalum, not an element. It has a great effect on industrial development. The current products are mainly used on the energized electrodes of the argon arc welding machine. China is the world's largest producer of tungsten and molybdenum, accounting for 80% of the world's exports. It is widely used in welding, electric light sources, electronic devices, chemicals, mining, metallurgy, shipbuilding, petroleum, aerospace and other industrial fields.
Tungsten, molybdenum and tungsten-molybdenum alloys have become excellent in thermal conductivity, electrical conductivity, low thermal expansion coefficient, high temperature strength, low vapor pressure and wear resistance, and have become electronic power equipment manufacturing, metal materials processing industry, glass manufacturing industry, high temperature furnace structure. Component manufacturing, heavy materials for aerospace and defense industry applications. Molybdenum and molybdenum alloys are used in these applications in the fields of machining, forming and metal working and welding.