Ferritic stainless steel heat treatment process

Ferritic stainless steel heat treatment process

1.Ferritic stainless steel is usually annealed to improve plasticity and toughness

Ensure corrosion resistance, and relieve stress. In my country's relevant stainless steel standards institute Among the ferritic stainless steels in the series, there are two situations in terms of chemical composition control, namely general ferritic stainless steel and high-purity ferritic stainless steel.

2. Heat treatment of high purity ferritic stainless steel

High-purity ferritic stainless steel means that the carbon content is usually no more than 0.01%, special requirements control the nitrogen content to be no more than 0.015%, and silicon, manganese, phosphorus, sulfur, etc. The controlled content of impurity elements is also lower than that of general ferritic stainless steel, see 00Cr30Mo2 and 00Cr27Mo in Table 2-2. The composition of high-purity ferritic stainless steel This point improves and weakens the adverse effects of carbon, nitrogen and impurity elements on steel, especially its high-temperature brittleness tendency, improved corrosion resistance, and intergranular Susceptibility to corrosion is reduced.