Austenitic stainless steel S31658 (0Cr17Ni12Mo2N) is a high nitrogen austenitic stainless steel with a nitrogen content of 0.14%-0.20%. The material has excellent resistance to high temperature oxidation, good formability and weldability, excellent toughness and stress corrosion cracking resistance, good resistance to intergranular corrosion, and good mechanical properties. It is widely used in the construction of boilers, heat exchangers and other parts, as well as parts that require applications in higher temperature and pressure environments such as turbine blades and combustors.
S31658 (0Cr17Ni12Mo2N) steel has excellent properties at the high end of austenitic stainless steels, which has greatly improved its resistance to stress corrosion. It have a good oxidation resistance in the range from 800℃ to 900℃. Compared with S31603 steel, nitriding the temperature of S31658 is higher, and its deep nitriding layer is Thicker, resulting in higher wear resistance after nitriding.
S31658 (0Cr17Ni12Mo2N) steel has excellent corrosion resistance in general mixed acids, organic acids, nitric acid, sulfuric acid, hydrochloric acid and carbonic acid. Compared with S31603, it has a higher corrosion resistance in mixed acids and organic acids. At the same time, the corrosion resistance of S31658 (0Cr17Ni12Mo2N) steel in the chloride ion medium is between S31603 and S31635, and it has excellent corrosion resistance to the salt environments such as sea tools and land.
S31658 (0Cr17Ni12Mo2N) steel also has excellent stress corrosion cracking resistance, and its stress corrosion cracking resistance is affected by the thickness of the nitriding layer. S31658 (0Cr17Ni12Mo2N) steel typically used in boiler tubing, heat exchanger tubing and equipment, turbine blades, combustor parts, and water tanks.
In addition, S31658 (0Cr17Ni12Mo2N) steel is also widely used in chemical, paper and pharmaceutical industry, petrochemical industry, power industry, salt making industry, food machinery and equipment, machinery parts, architectural decoration and environmental protection industry, and popular in the traditional manufacturing industry and related fields.
Due to its excellent performance, S31658 (0Cr17Ni12Mo2N) steel is generally recommended to produce parts that require high corrosion resistance and high-temperature oxidation resistance, such as turbine blades and combustor components. Austenitic stainless steel is widely used in various application fields, such as chemical, petrochemical, food, pharmaceutical, power station, paper-making, marine and offshore engineering, and architecture decoration.
In summary, S31658 (0Cr17Ni12Mo2N) steel is an austenitic stainless steel with excellent resistance to high temperature oxidation, good formability and weldability, excellent toughness and stress corrosion cracking resistance, good resistance to intergranular corrosion, and good mechanical properties. It is widely used in equipment, turbine blades, combustor parts, boiler tubing and heat exchanger tubing, as well as many other application fields.
