A742/A742M-13 is a standard specification for steel plates, quenched and tempered, for pressure vessels. This specification covers steel grades A, B, C, and D which are classified according to their tensile strength. These steel grades are suitable for welded pressure vessels where improved notch toughness is important.
The mechanical properties of A742/A742M-13 steel grade depend on the steel grade. For grade A, the minimum yield strength is 50 ksi (345 MPa) and the minimum tensile strength is 70 ksi (485 MPa). For grades B, C, and D, the minimum yield strength is 60 ksi (415 MPa) and the minimum tensile strength is 80 ksi (550 MPa).
In addition to its mechanical properties, A742/A742M-13 steel grade also has specific requirements for chemical composition. The steel shall conform to the chemical requirements of carbon, manganese, phosphorus, sulfur, silicon, nickel, chromium, molybdenum, vanadium, titanium, copper, and aluminum.
Applications of A742/A742M-13 steel grade include the construction of pressure vessels such as tanks, storage cylinders, and boilers. These steel plates are suitable for use in high temperature and pressure environments. They are also used in industries such as oil and gas, chemical processing, and power generation.
In conclusion, A742/A742M-13 steel grade is a specification for steel plates used in the construction of pressure vessels. It has specific mechanical properties and chemical composition requirements, making it suitable for various applications in high temperature and pressure environments.