Huzhou Nanxun Yintuo Special Material Technology Co., Ltd. specializes in the development and production of high-quality ferritic stainless steel seamless pipe and tube, nickel-nickel alloy and seamless pipe.

Through extensive exchanges at the Beijing International Modern Ferritic Stainless Steel Conference in 2004, everyone clearly saw that the domestic production and use of ferritic stainless steel was low compared with the international developed countries; the use field was narrow. The international average use rate is 25%, France 65%, Japan 35%, the United States 34%, and my country is about 10%. Developed countries have been widely used in automobiles, electronic products, roofing materials, containers, and home appliances. , Water tanks, spring ponds and other fields, in many ways replace the 300 series. In my country, the use area is still very limited, mainly in products; in terms of production technology level, China also has a gap, especially in the smelting, surface quality and cost control of ultra-low carbon and ultra-low nitrogen ferritic stainless steel. . Finally, there is a certain gap in the research and development of new varieties. Austenitic steel accounts for 90% of China's stainless steel consumption, and ferrite and other steels account for less than 1,096. This status quo has also triggered a contradiction between the rapid development of stainless steel and the tight supply of nickel resources. For this reason, as China's stainless steel industry organization, China Special Steel Association Stainless Steel Branch specifically proposed: to vigorously promote ferritic stainless steel.

Ferritic stainless steel generally does not contain rare precious elements. Low-chromium ferritic stainless steel is also called economic stainless steel. Compared with the alternative Gezhen austenitic stainless steel, medium and high-chromium ferritic stainless steel has lower cost and price. The yield strength of ferritic stainless steel is higher than that of chromium-nickel austenitic steel, and the elongation is slightly lower, but the work hardening tendency is small, easy to cold mark, and easy to cut. As we all know, chromium-nickel austenitic stainless steel is very sensitive to stress corrosion. In the failure cases of austenitic stainless steel equipment components, stress corrosion damage accidents account for a large proportion, while ferritic stainless steel has excellent stress corrosion resistance although it is in the test Under some indoor conditions, people have also found that ferritic stainless steel also produces certain phenomena of stress corrosion. However, in practical engineering applications, there are very few instances of ferritic stainless steel producing stress corrosion damage at home and abroad. Ferritic stainless steel is ferromagnetic and has a high thermal conductivity system, which is about 130%~150% of chromium-nickel austenitic stainless steel. It is very suitable for heat exchange applications. It has a small linear expansion coefficient and is only for nickel austenitic stainless steel. 60%~70% of the content, it is very suitable for thermal expansion and contraction, with thermal cycling conditions.

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