The deoxidation ability of Al is much stronger than that of Si and Mn when aluminum element (Al element) is added into steel as deoxidizer or alloying element. The main role of aluminum in steel a36 plate etc. steel is to refine grain size and fix nitrogen in steel, so as to significantly improve the impact toughness of steel and reduce the tendency of cold brittleness and aging. Al element can also improve the corrosion resistance of steel, especially when used with molybdenum, copper, silicon, chromium and other elements. The wear resistance of chromium molybdenum steel and chromium steel can be increased by containing Al element.
Manganese steel plate is a kind of common steel, which is a kind of high-strength anti manganese steel. steel a36 plate, Manganese steel plate is mainly used to bear the impact, extrusion, material wear and other severe working conditions. It is a typical anti-wear steel, with austenite and carbide as cast structure. After water quenching at about 1000 ° C, the structure changes into single austenite or austenite with a small amount of carbide.
On January 29, the domestic steel index (Myspic) composite index reported 162.87 points, a week-on-week increase of 0.28%. The hot rolled coil index was 160.7, up 0.4% week-on-week. The heavy plate index was 165.15, up 0.3% week-on-week; the cold rolled plate index was 123.58, up 0.91% week-on-week.
