The future development direction of stainless steel

For heavy use of austenitic stainless steel, the use of Ni is inevitable. But now people have realized that Ni price, price volatility and supply less expensive, and begun to Ni reserves and the development of alternative materials. Replace Ni with other elements of research has been conducted for many years, but has not obtained satisfactory results. Ferritic stainless steel, therefore, it is better development of ferritic stainless steel a detailed rules, the use of the environment to the ferritic stainless steel instead of austenitic stainless steel in the direction of advance. Ni in the stabilization of austenite and plays a decisive role to improve the corrosion resistance, it is difficult to find elements Ni can replace completely. Introduced N is in front of the austenite stabilization element, by calculation, whether in land use, 23 cr - 2 mo - Fe ?