Explanation

stainless steel used at low temperatures. Including cryogenic maraging stainless steel, low temperature duplex stainless steel, cryogenic austenitic stainless steel. cryogenic maraging stainless steel has high strength. Low temperature duplex stainless steel has excellent resistance to pressure corrosion, pitting corrosion and crevice corrosion. The use of ultra-low carbon content can significantly improve low-temperature toughness and weldability. Their service temperatures are mostly 77-173K, and some steel types can reach 20K; The matrix of austenilic stainless steel is austenitic structure, which generally does not exist cold brittleness, has good low-temperature toughness, and also has the characteristics of nonmagnetism. It is widely used in the ultra-low temperature field of 4.2-77K, such as storage devices for liquid nitrogen, liquid hydrogen and liquid oxygen, superconducting engineering structures, etc.

Classification