904L stainless steel plate is a kind of austenitic stainless steel with very low carbon content and high alloying designed for environments with harsh corrosive conditions. It has better corrosion resistance than 316L and 317L, while taking into account price, performance, and cost-effectiveness. higher. Due to the addition of 1.5% copper, it has excellent corrosion resistance against reducing acids such as sulfuric acid and phosphoric acid. It also has excellent corrosion resistance against stress corrosion pitting and crevice corrosion caused by chloride ions, and has good resistance to intergranular corrosion. In pure sulfuric acid in the concentration range of 0-98%, the service temperature of 904L steel plate can be as high as 40 degrees Celsius. In pure phosphoric acid in the concentration range of 0-85%, its corrosion resistance is very good. In industrial phosphoric acid produced by wet processes, impurities have a strong impact on corrosion resistance. Among all kinds of phosphoric acid, 904L super austenitic stainless steel has better corrosion resistance than ordinary stainless steel. In strong oxidizing acids, 904L stainless steel has lower corrosion resistance than different highly alloyed steel types. within this concentration range. The corrosion resistance of 904L steel is better than that of conventional stainless steel. 904L stainless steel has high resistance to pitting corrosion. Its resistance to crevice corrosion in chloride solutions. The force is also very good. The high nickel content of 904L steel plate reduces the corrosion rate in pits and seams. Due to its high nickel content, 904L has high resistance to stress corrosion cracking in nitride solutions, concentrated hydroxide solutions and hydrogen sulfide-rich environments.
Post time: Nov-20-2023