Top quality nm450 steel plate specification for wholesale

The sulfur element (S element) comes from the ore and fuel coke of steelmaking. It is a harmful element in NM450 steel plate specification etc. steel. Sulfur exists in steel in the form of iron sulfide (FeS). FeS and Fe form a low melting point (985℃) compound. The hot working temperature of steel is generally above 1150 - 1200℃, so when the steel is hot working, the premature melting of FeS compound causes the workpiece to crack, which is called "hot brittleness". It reduces ductility and toughness of steel and causes cracks during forging and rolling. Sulfur is also detrimental to welding performance and reduces corrosion resistance.

The surface hardness of NM400 wear-resistant steel plate usually reaches 360-450HB, and the steel has a high mechanical strength. Its mechanical properties are three to five times that of ordinary low alloy steel plate. NM400 wear-resistant steel plate has excellent mechanical properties and good wear resistance, and can adapt to various mining conditions under different working conditions. NM400 steel can significantly improve the wear resistance of mechanical components, improve the service life of machinery, and reduce production costs.

Compared with thick steel plates, NM450 steel plate specification, thin steel plates have many obvious advantages in steel plate processing and use. It is precisely these advantages of thin steel plates that make them more and more popular in various industries. First, compared to those thicker steel plate materials, thin steel plates are generally thinner in thickness. Thin steel plates themselves are lighter and thinner, and their weight is lighter, which is very convenient for handling during construction and transportation. It can save some storage and transportation space.

"The latest data from the General Administration of Customs shows that from January to February 2020, China exported 500,000 tons of coal and lignite, a year-on-year decrease of 60.2%. From January to February, China exported 360,000 tons of coke and semi-coke, a year-on-year decrease of 474.2%. From January to February, China imported 68.06 million tons of coal and lignite, a year-on-year increase of 33.1%."