Tubular stainless steel Sanicro® 28

corrosion resistanthigh-performance

Sanicro® 28 (UNS N08028) is a high-alloy austenitic stainless steel designed for service in highly aggressive and corrosive environments. Developed as a material to resist corrosion attack in phosphoric acid processing, the grade's chemical composition ensures superior performance in a wide range of demanding conditions. Sanicro® 28 offers excellent corrosion resistance in, for example, caustic and acidic applications including sulphuric and high chloride environments. It can also be used at elevated temperatures. Excellent resistance to sulphide cracking Sanicro® 28 is widely used, for example, in hydrogen sulfide containing environments within the oil and gas industry. This is due to the material's excellent resistance to sulfide cracking in conditions characterized by high levels of hydrogen sulfide (H2S), carbon dioxide (CO2) and chlorides (Cl-). Examples of applications are production tubing (OCTG) and heat exchangers used in the processing of sour crude. The combination of molybdenum and nickel in Sanicro 28 helps prevent cracking caused by polythionic acid attack during equipment start up and shut down. The grade is also utilized in oil refineries to reduce the effects of naphthenic acid corrosion. Very good corrosion resistance in strong acids Very good resistance to stress corrosion cracking in hydrogen sulfide (H2S) and chloride containing environments Very good resistance to intergranular corrosion High resistance to pitting and crevice corrosion Good weldability