X3CrNiMoBN17-13-3

Stainless Steel

X3CrNiMoBN17-13-3

Low-carbon 317 stainless. (DIN 17440; equiv ASTM 317L / JIS SUS317L). Nominal values—confirm mill certificate.

Chemical Composition (%)

C0.03
CR18
NI11
MO3

Mechanical Properties

Tensile:≥515 MPa;Yield:≥205 MPa

Chinese Standard

DIN 17440 X3CrNiMoBN17-13-3

Equivalent Standards

ASTM 317L

Equivalent Grades

JIS SUS317L

Applications

低碳317。,"Plate

Available Forms

Bar"

Uses

Austenitic stainless steel with excellent corrosion resistance, formability and weldability; non-magnetic in annealed condition. High nickel (≈13%) stabilises the austenite and improves toughness and pitting resistance. Molybdenum (≈3.5%) enhances resistance to chloride pitting and crevice corrosion — suited to marine and chemical service. Used in food processing, chemical plant, architecture, heat exchangers, kitchenware and medical devices.

Heat Treatment

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).

Precautions

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.

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