The A995/A995M-13 is a standard specification for castings made of super duplex stainless steel for pressure-containing and high-temperature service. This specification covers various grades of ferritic/austenitic steels such as Grade 4A, 5A, 6A, and 7A. Each grade has its own specific chemical composition and mechanical properties.
The chemical composition of the A995/A995M-13 steel grade includes elements such as chromium, nickel, molybdenum, and nitrogen. These elements contribute to the material’s high corrosion resistance, strength, and toughness. The steel also contains small amounts of other elements like carbon, silicon, manganese, phosphorus, sulfur, copper, and tungsten.
The mechanical properties of the A995/A995M-13 steel grade are determined through various tests such as tension tests, impact tests, and hardness tests. These properties include tensile strength, yield strength, elongation, impact energy, and hardness. These properties make the steel suitable for demanding applications in industries such as oil and gas, chemical processing, and marine environments.
The A995/A995M-13 steel grade is commonly used in the production of valves, pumps, and other pressure-containing components that require resistance to corrosion, high strength, and excellent fatigue properties. The steel is also utilized in offshore platforms, heat exchangers, and desalination plants.
In summary, the A995/A995M-13 steel grade is a super duplex stainless steel that offers excellent corrosion resistance, high strength, and good mechanical properties. Its chemical composition and mechanical properties make it suitable for various pressure-containing and high-temperature applications in different industries.