Molybdenum screw and ordinary stainless steel, iron or copper screw is the same, but the material is molybdenum, molybdenum ,chromium, nickel, manganese and silicon can make different types of stainless steel, tool steel, high-speed steel and alloy steel. The stainless steel has good corrosion resistance and can be used as corrosion resistant steel pipe for petroleum exploitation. A stainless steel with about 6% molybdenum addition can also be used as a substitute for titanium in seawater desalination equipment, ocean-going ships, offshore oil and natural gas exploration pipelines. This kind of stainless steel can also be used for automobile shell, sewage treatment equipment and so on. The efficiency of molybdenum tool steel is two times higher than that of tungsten tool. Its performance is excellent, its cost is low and its weight is light. Molybdenum series high speed steels have the advantages of carbide inhomogeneity, wear resistance, good toughness and high temperature plasticity, they are suitable for manufacturing forming tools,containing alloy steels which can be used for manufacturing machine tool structural parts, industrial vehicles and bulldozing equipment. Molybdenum-containing alloy steel with micro-pearlite microstructure under rolling condition is an important steel in railway and bridge construction.

   As a material element of molybdenum screw, molybdenum is a transitional element, which can easily change its oxidation state, it plays a role of electron transfer in the oxidation-reduction reaction in vivo. it is likely to be in the +6 valence state in the form of oxidation. Although it is likely to be reduced to +5 valence state during electron transfer. However, other oxidations of molybdenum have also been found in the reduced enzyme. Molybdenum is a constituent of xanthine oxidase/dehydrogenase, aldehyde oxidase and sulfite oxidase, which is believed to be an essential trace element for human body, animals and plants. Compared with traditional stainless steel, molybdenum screw has excellent flexibility and oxidation resistance. The use of more widely in various occupations, the general stainless steel screw in high-pressure environment compared with molybdenum screw, compression can be stronger, so in space metals, will choose rare metals to manufacture, molybdenum screw as the connector between them.

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