12Cr17Ni7

Stainless Steel

12Cr17Ni7

High work-hardening rate, spring applications. (GB/T 20878; equiv ASTM 301 / EN 1.4310 / JIS SUS301). Nominal values—confirm mill certificate.

Chemical Composition (%)

C0.15
CR16
NI6

Mechanical Properties

Tensile:≥520 MPa;Yield:≥205 MPa;Elong:≥40%

Chinese Standard

T 20878 12Cr17Ni7

Equivalent Standards

ASTM 301

Equivalent Grades

EN 1.4310 / JIS SUS301

Applications

高加工硬化率，弹性件。,"Sheet

Available Forms

Strip"

Uses

Austenitic stainless steel with excellent corrosion resistance, formability and weldability; non-magnetic in annealed condition. High nickel (≈7%) 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.

Request a Quote Back to category

Comments 0