022Cr23Ni5Mo3N — stainless Steel: Composition, Properties & Applications

Also known as: 022Cr23Ni5Mo3N
Duplex stainless steel, high strength & chloride resistance. (GB/T 20878; equiv UNS S31803 / EN 1.4462 / ASTM A182 F51 / GB 022Cr22Ni5Mo3N). Nominal values—confirm mill certificate.

CHEMICAL COMPOSITION
C:≤0.030;Cr:21.0-23.0;Ni:4.5-6.5;Mo:2.5-3.5;N:0.08-0.20

MECHANICAL PROPERTIES
Tensile:≥620 MPa;Yield:≥450 MPa;Elong:≥25%

TYPICAL APPLICATIONS
双相不锈钢，高强度耐氯。,"Plate

AVAILABLE FORMS
Bar

STANDARDS & EQUIVALENT GRADES
T 20878 022Cr23Ni5Mo3N; ASTM A182 F51 / GB 022Cr22Ni5Mo3N; Heat input and interpass must be controlled to keep the ferrite/austenite balance; avoid exposure 300–400 °C (sigma) and use low carbon. Sensitive to chloride SCC above ≈60 °C.

HEAT TREATMENT
Duplex stainless steel with a mixed austenite/ferrite structure giving roughly twice the yield strength of austenitic grades plus excellent chloride resistance. Used in desalination, offshore, pulp & paper, heat exchangers and chemical tankage.

PROCESSING PRECAUTIONS
Solution anneal 1020–1100 °C and rapid quench; reheating near 300–400 °C (sigma phase) and 475 °C embrittlement zones must be avoided.

SOURCE & SUPPLY
Shanxi Youte Steel stocks 022Cr23Ni5Mo3N in bars, plates, pipes and forgings with mill test certificates, cut-to-length service and export packaging. Contact our team for quotations and technical data sheets.