Stainless Steel Grades and Features -- 200 Series
Stainless steel product has a complex family of its technology and name. 200 series was firstly developed in the United States during World War Ⅱ, as a replacement for 300 series stainless steel. At that time, due to the war, nickel, as strategic material, is strictly controlled by the relevant countries, and the supply of nickel in the United States is insufficient. To solve the problem of stainless steel production and supply in the case of serious shortage of nickel supply, the United States developed this new series of austenitic stainless steel with manganese instead of nickel.
After the end of World War II, the United States nickel supply situation gradually improved, therefore, the production of 300 series stainless steel is no longer restricted by the raw material shortage, so the 200 series did not get a big development.
200 series is an austenitic alloy, and it has excellent strength, plasticity, and rust resistance. JSL AUS (202) can be used for extra deep drawn products, and J4 (201) can be used for deep drawn products. These steels have been frequently tested in India and other countries and have been proved that the rust-resistance ability can be comparable with 304 in mild conditions.
Rust resistance and physical testing proved that the 200 series is suitable for a variety of applications. However, J4 (201) cannot be used in coastal areas and moderate to heavy rain environments, and the 200 series is not recommended for the storage/processing of acidic/corrosive chemicals.