317L
Stainless Steel317L
Mo-bearing austenitic, pitting resistant. (ASTM A479; equiv ASTM 316 / EN 1.4401 / JIS SUS316 / GB 06Cr17Ni12Mo2). Nominal values—confirm mill certificate.
Chemical Composition (%)
| C | 0.03 |
|---|---|
| SI | 1 |
| MN | 2 |
| P | 0.045 |
| S | 0.03 |
| CR | 18 |
| NI | 11 |
| MO | 3 |
Mechanical Properties
Tensile:≥515 MPa;Yield:≥205 MPa;Elong:≥40%
Chinese Standard
ASTM A479 317L
Equivalent Standards
ASTM 316
Equivalent Grades
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).
Applications
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Available Forms
Sheet
Uses
Bar
Heat Treatment
Tube"
Precautions
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.
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