Explanation
The steel with good toughness and no cold brittleness can be used below 0 ℃. Generally, steel used in the temperature range of 273-77K is called cryogenic steel, and steel used in the temperature range below 77K is called ultra cryogenic steel. cryogenic steel can be divided into: cryogenic ferritic steel; Cryogenic nickel steel; Cryogenic stainless steel.
Classification
Metals -> Steels -> Alloy steels