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ASTM A283 is a carbon steel plate for general structural use with low to medium tensile strength. The ASTM A283 steel specification covers four structural quality grades of low carbon steel plates for general application, Grade A, B, C, and D.
ST12 is German standard (DIN1623), It's ordinary cold rolled steel. In principle, ST12 can only be bent and formed, and no stamping is allowed.
Q235 is carbon structural steel. Carbon structural steel can be divided into two categories: ordinary carbon structural steel and high-quality carbon structural steel. The Q in Q235 represents the yield limit of this material, and the 235 at the end refers to the yield value of this material, which is about 235MPa. Carbon structural steel is mainly used in railways, bridges, and various construction projects to manufacture various metal components that bear static loads, as well as unimportant mechanical parts and general welded parts that do not require heat treatment.
NM400 wear-resistant carbon steel plate is widely used in mining machinery, coal mining machinery, environmental protection machinery, engineering machinery, etc. It is also commonly used as high-strength structural steel with yield strength ≥ 800MPa.
SA516Gr. 70 is widely used in petroleum, chemical industry, power station, boiler and other industries to make reactors, heat exchangers, separators, spherical tanks, gas tanks, liquefied gas tanks, nuclear reactor pressure shells, boiler drums, liquefied petroleum gas cylinders, high-pressure water pipes of hydropower stations, water turbine shells and other equipment and components.
The 4130 carbon steel plate is usually used in the quenched and tempered state. When the carbon content is at the lower limit, the steel can also be used as the carburized steel with higher central strength.
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