384

Stainless Steel

384

High-Ni, low work-hardening rate. (ASTM A276; equiv ASTM 384 / JIS SUS384). Nominal values—confirm mill certificate.

Chemical Composition (%)

C	0.08
CR	15
NI	17

Mechanical Properties

Tensile:≥490 MPa;Yield:≥170 MPa

Chinese Standard

ASTM A276 384

Equivalent Standards

ASTM 384

Equivalent Grades

JIS SUS384

Applications

高镍低加工硬化。,"Wire

Available Forms

Bar"

Uses

Austenitic stainless steel with excellent corrosion resistance, formability and weldability; non-magnetic in annealed condition. High nickel (≈18%) stabilises the austenite and improves toughness and pitting resistance. 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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384