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Promotion of 304CuW Stainless Steel with High Corrosion Resistance in Puxiang

文章出处:未知责任编辑:管理员人气:发表时间:2019-07-29 16:51 【

In order to replace the existing stainless steel products, POSCO is accelerating the promotion of 304CuW stainless steel with high corrosion resistance. This product has both price and performance advantages. At present, it is mainly used as economic material for boilers, heat exchangers and hot water tanks.
The traditional 304 stainless steel is austenitic stainless steel, which contains 18% Cr and 8% - 10% Ni. When used in boilers or water tanks, stress corrosive cracking (SCC) occurs simultaneously in materials under the interaction of tensile stress and corrosion after continuous exposure of welding or joint parts to high temperature environment and moisture for a certain period of time. Oncracking phenomenon. The traditional 316 (L) stainless steel is austenitic stainless steel, which contains 16% - 18% Cr, 10% - 14% Ni and 2% - 3% Mo. Despite its high corrosion resistance, its price is on the high side. In order to solve the above problems, Puxiang developed 304CuW stainless steel in 2011, which is also austenitic stainless steel. The steel contains 18% - 20% Cr and 8.0% - 10.5% Ni, which can not only be avoided. Stress corrosion cracking occurs, and the performance is better and the price is lower.
In recent years, professionals in Korea have proposed that 304Cu W stainless steel with high antimicrobial activity should be gradually replaced by 304 stainless steel currently used in medical facilities. This is because 304CuW stainless steel has added trace amounts of Cu and W to 304 stainless steel, which improves the antimicrobial activity, and the price is lower than that of 304 stainless steel by more than 40%. The price advantage of this product is outstanding. Compared with 316L stainless steel, 304CuW stainless steel has the same corrosion resistance, but its price is about 25% cheaper per ton. Therefore, it has attracted extensive attention from overseas customers. In the future, 304CuW stainless steel products are expected to be widely used on the surfaces of infusion racks, faucets, bed handles, elevators, door handles and other medical facilities frequently contacted by patients. In addition, its antimicrobial properties have a broader application space.


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