Hot Flat ASTM A572 Gr50 3mm MS Sheet Cold Rlloed 1.2 Mm Mild Steel Sheets

The types of steel plates are usually divided into three types: thick plates (over 6mm), medium-thick plates (3-6mm) and thin plates (below 3mm) according to their thickness. In terms of plate-making process, low-carbon steel plates can be divided into two types: cold-rolled and hot-rolled. Hot rolling alone can produce low-carbon steel plates of about 1.2mm and stainless steel plates of about 2mm. Thinner plates can be manufactured by cold rolling, annealing and tempering rolling.In comparison between steel plates, generally hot-rolled steel plates are slightly harder than cold-rail steel plates and have lower elongation. In the cold-rolled steel sheet, the higher the grade, the softer the steel, the lower the yield point, the larger the n value and the r value, and the larger the total elongation. In addition to the above-mentioned plastic deformation properties, in terms of elastic properties, the modulus of elasticity of steel plates is twice larger than that of aluminum plates.

The smelting of carbon steel is usually carried out in converters and open hearth furnaces. The converter generally smelts ordinary carbon steel, while the open hearth can smelt various high-quality steels. The oxygen top-blown converter steelmaking technology has developed rapidly, and there is a trend to replace open-hearth steelmaking. Inject the refined molten steel into a steel ingot mold to obtain various steel ingots. Steel ingots are processed into steel plates, steel strips, steel bars and various cross-sectional shapes after forging or rolling. Carbon steel is generally used directly in the hot rolled state. When used in the manufacture of tools and various machine parts, heat treatment is required according to the requirements of use; as for steel castings, most of them must be heat treated.