08X18H12B — stainless Steel: Composition, Properties & Applications

Also known as: 08X18H12B
Nb-stabilized austenitic, for welding & high-temp service. (GOST 5632; equiv ASTM 347 / EN 1.4550 / JIS SUS347). Nominal values—confirm mill certificate.

CHEMICAL COMPOSITION
C:≤0.08;Cr:17.0-19.0;Ni:9.0-13.0;Nb:≥10×C

MECHANICAL PROPERTIES
Tensile:≥515 MPa;Yield:≥205 MPa;Elong:≥40%

TYPICAL APPLICATIONS
铌稳定奥氏体，焊接高温用。,"Plate

AVAILABLE FORMS
Bar

STANDARDS & EQUIVALENT GRADES
GOST 5632 08X18H12B; ASTM 347; Weld with low-carbon or stabilized filler (e.g., 316L, 347) to avoid sensitization; passivate after fabrication. Not hardenable, but work-hardens rapidly — use sharp tools and rigid setups. Avoid chloride contact for 304 in warm service; specify 316/317 for marine or aggressive media.

HEAT TREATMENT
Austenitic stainless steel with excellent corrosion resistance, formability and weldability; non-magnetic in annealed condition. High nickel (≈11%) stabilises the austenite and improves toughness and pitting resistance. Used in food processing, chemical plant, architecture, heat exchangers, kitchenware and medical devices.

PROCESSING PRECAUTIONS
Solution anneal 1010–1150 °C followed by rapid water quench to retain austenite; not hardenable by heat treatment. Sensitization avoided by low carbon or stabilizers (Ti/Nb).

SOURCE & SUPPLY
Shanxi Youte Steel stocks 08X18H12B 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.