What grade is A573 Gr70 carbon steel?

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A573 Gr70 carbon steel, carbon steel plate is a kind of steel plate, and it is the abbreviation of common carbon structural steel. The carbon steel plate belongs to a large category of steel, including Q235, SS400, A36, SM400, ST37-2, etc. Due to the different names in various countries, the carbon steel standards implemented are also different. The ordinary carbon structural steel, A573 Gr70 carbon steel is mainly used for construction machinery, mining machinery, heavy vehicles, bridges, pressure vessel plate and other engineering structures.

40B steel plate is alloy structural steel plate formed by adding boron to the carbon structural steel with a carbon content of 0.40%. A573 Gr70 carbon steel, 40B steel plate has high hardness, toughness and hardenability, and has good comprehensive mechanical properties after quenching and tempering, which can be used instead of 40Cr steel. 40B steel plate chemical elements: C: 0.37-0.44, Si: 0.17-0.37, Mn: 0.60-0.90, B: 0.0005-0.0035. 40B steel plate is used to manufacture parts with larger section and higher performance requirements.

At the initial stage of corrosion, the rust layer on the surface of weathering steel is denser than that of carbon steel, A573 Gr70 carbon steel, and there are relatively few cracks and holes. After 25 days, delamination occurs in some parts of carbon steel and weathering steel, and there is no difference in corrosion products, mainly due to the role of alloy elements in the rust layer. The precipitation of Cu and Cr alloy elements in the weathering rust layer can resist the invasion of moisture and harmful ions in the atmosphere, and further corrosion of steel and base metal can be prevented, so as to achieve the effect of atmospheric corrosion resistance.

"A204 Grade C steel chemical composition(%)Carbon max.: 0.28 Manganese max.: 0.90Phosphorus Max.: 0.025Sulfur Max.: 0.025Silicon: 0.15-0.40Molybdenum: 0.45–0.60A573 Gr70 carbon steel, A204 Grade C steel mechanical propertiesFor boiler steel plate A204 Grade C, the yield strength shall be above 295 Mpa, tensile strength from 515 Mpa to 655 Mpa."

We have a professional production team and high-quality production equipment, and we also have a great A573 Gr70 carbon steel advantage in price, with its own factory, large-scale production to reduce the price. Strictly control each production line to ensure the A573 Gr70 carbon steel production of high-quality steel plates, steel pipes and other products that meet customer requirements.

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