Nickel and manganese can be formed and the stability of austenite.Nickel can improve high temperature strength of austenitic steel and improve the carburizing resistance.Although manganese can form generation of nickel austenite, but the damage the oxidation resistance of heat resistant steel.Vanadium, titanium, niobium is strong carbide forming elements, can form a fine dispersion carbide, improve the high temperature strength of steel.Titanium, niobium and carbon can also prevent austenitic steel at high temperatures or produce intercrystalline corrosion after welding.Usually after normalizing or conditioning use;In quenched and tempered martensite heat-resistant steel processing, to stabilize the organization, get good comprehensive mechanical properties and high temperature strength.Heat resistant steel back cupping ferritic steel production line can't through strengthening heat treatment.To eliminate because of cold plastic deformation caused by machining and welding stress, can be conducted in 650 ~ 830 ℃ annealing treatment, rapid cooling after annealing, so as to rapidly after 475 ℃ brittle temperature range.