Молибден , chemical symbol Mo , molybdenum is a silver-white metal , hard and tough , is a transition metal element , and is an essential trace element for human body , animals and plants . Like tungsten , molybdenum is a refractory rare metal . The melting point of molybdenum is 2620 ℃s , so its strength is very high at room temperature and high temperature .
It has a small expansion coefficient , high electrical conductivity and good thermal conductivity . Molybdenum and its alloys are widely used in metallurgy , agriculture , electrical , chemical , environmental protection and aerospace .

Molybdenum is mainly used in the iron and steel industry . The industrial molybdenum oxide is directly used for toolmaking or cast iron after briquette , and a small part is smelt into ferromolybdenum and then used for toolmaking . Adding molybdenum to cast iron can improve the strength and wear resistance of iron , and it is used to manufacture various high temperature resistant parts of / in aviation and aerospace .Molybdenum metal is widely used in electronic devices such as electron tubes , transistors and rectifiers . Molybdenum oxide and molybdate are catalysts in the chemical and petroleum industries .Molybdenum disulfide can catalyze the hydrogenation of carbon monoxide to produce alcohols under certain conditions . It is a promising C1 chemical catalyst and an important lubricant . It can be used in the lubrication of various types of machinery of the aerospace and machinery industries .Molybdenum is one of the essential trace elements for plants and is used as a trace element fertilizer in agriculture .Molybdenum has the potential to replace graphene in the electronics industry .Pure molybdenum wires / wired is used for high-temperature electric furnace , EDM and wire cutting ;Molybdenum sheet is used to manufacture radio equipment and X-ray equipment ;Molybdenum is also widely used as a substrate for different film surfaces in thin-film solar energy and other coating industries .