Stainless Alloy Steel - Super Austenite Stainless Steel

254SMO is an austenitic stainless steel. Due to its high molybdenum content, it has high resistance to pitting corrosion and crevice corrosion. This grade of stainless steel is developed and researched for use in environments containing halides, such as seawater. 254SMO also has good resistance to uniform corrosion. Especially in acids containing halides, this steel is superior to ordinary stainless steel. Its C content is less than 0.02%, so it is called pure austenitic stainless steel (also known as super austenitic stainless steel). 254SMO (S31254, F44, 1.4547) stainless steel is a highly corrosion-resistant super austenitic stainless steel developed for environments with halides and acids. It is widely used in harsh working conditions such as high concentration chloride ion media and seawater.

904L Super Austenitic Stainless Steel is a low-carbon, high nickel, molybdenum austenitic stainless steel with excellent activation passivation transformation ability and corrosion resistance. It has good corrosion resistance in non-oxidizing acids such as sulfuric acid, acetic acid, formic acid, and phosphoric acid, as well as good resistance to pitting corrosion in neutral chloride ion media. It also has good resistance to crevice corrosion and stress corrosion. Suitable for various concentrations of sulfuric acid below 70 ℃, it has good corrosion resistance to any concentration and temperature of acetic acid and mixed acid of formic acid and acetic acid under normal pressure. Application fields: Petroleum and petrochemical equipment, such as reactors in petrochemical equipment; Storage and transportation equipment for sulfuric acid, such as heat exchangers; The flue gas desulfurization device in power plants is mainly used in the tower body, flue, baffle plate, internal components, spray system, etc. of the absorption tower; Scrubbers and fans in the acid treatment system; Seawater treatment equipment, seawater heat exchangers, papermaking industry equipment, sulfuric acid and nitric acid equipment, acid and pharmaceutical industry and other chemical equipment, pressure vessels, food equipment.

Super austenitic N08367 (AL-6XN) alloy is a highly corrosion-resistant austenitic stainless steel with high Cr and Mo content. It also has strong corrosion resistance in harsh environments such as high-temperature seawater or flue gas desulfurization devices. Under certain conditions, it has corrosion resistance comparable to Hastelloy and pure titanium, making it a highly cost-effective stainless steel. The ability to resist chloride pitting, crevice corrosion, and stress corrosion is far superior to 300 (316L, 317L) series stainless steel and 904L stainless steel, and its cost is much lower than that of corrosion-resistant nickel based alloys (alloys 625, 276, etc.). It exhibits good corrosion resistance in various severe corrosive environments and is suitable for high chloride aqueous solutions and chloride corrosion environments.

Super Austenitic 310L stainless steel nitrate grade (NAG) is designed for nitric acid applications. In this steel, the carbon and silicon content is well controlled to produce a more stable austenite microstructure without intermetallic or carbide precipitation, and residual elements are strictly controlled to provide high corrosion resistance in boiling 50-65% nitric acid solution. The silicon content remains below 0.3%, while the carbon content is below 0.015%. This alloy is designed for nitric acid applications in industries such as petroleum, electronics, chemical, pharmaceutical, textile, food, machinery, construction, aerospace, etc.

Super Austenite Stainless Steel 310 Mod is applied to marine structures in marine environments, seawater desalination, seawater aquaculture, seawater heat exchange, flue gas desulfurization for thermal power generation, wastewater treatment, atomic power generation, comprehensive utilization of coal, ocean tide power generation, oil refining, chemical equipment, salt production, soy sauce brewing, high concentration chloride ion environments, such as paper industry, various bleaching devices, etc.