OREANDA-NEWS. April 11, 2013. The research job “the effect of Nb and Ti on the quality and properties of ultra-pure ferrite stainless steel continuous casting slab” finished by TISCO postdoctoral program has recently passed the evaluation.

The evaluation experts think that the research achievement has relative high academic and application values and reach the international advanced level. The research on this topic provides theoretical basis for development of high quality, high performance, low cost ultra-pure ferrite stainless steel and has considerable market and economic values.
 
The carbon and nitrogen content of the ultra-pure ferrite stainless steel is very low, its corrosion resistant properties, toughness and weldability are much higher than the common ferrite stainless steel. It has obtained the large-scale development and the extensive use for nearly half century. Since the turn of the 21century, the sustainable development strategy requires that the environment friendly shall be the pre-condition of development of new materials. The ultra-pure ferrite stainless steel is one of the ideal resource-saving environmental protection materials. It doesn’t contain the element nickel that is allergic to human body. The ferrite stainless steel, especially the ferrite stainless steel contained Nb, has good corrosion resistant properties in exhaust system in the car, is a good alternative for cast iron.
 
Nb and Ni are the indispensable elements in the production of ultra-pure ferrite stainless steel and play an important role to the microstructure and quality of the steel. The series research on quality and properties of the ultra-pure ferrite stainless steel continuous casting slab, the determination of their occurrence state and limiting contents and the optimized ratio of Nb, Ti, C and N in the ultra-pure stainless steel can provide a good solution for solving the quality problems of the slab and optimizing the production process during the production. In 2012, the output of ultra-pure ferrite stainless steel in TISCO exceeded 100000 tons, increased by 35% over 2011 and achieved a good economic benefit.