ASTM A240 S31653 Stainless Steel Composition & High‑Strength Austenitic Properties
ASTM A240 S31653 is the UNS designation for 316LN, a nitrogen‑strengthened, molybdenum‑alloyed austenitic stainless steel. With 16–18% chromium, 10–14% nickel, 2–3% molybdenum, and added nitrogen, it provides enhanced yield strength, improved pitting resistance, and stable weld performance.
S31653 performs reliably in seawater, chemical media, mildly acidic environments, and cryogenic conditions. It is widely used in pressure vessels, heat exchangers, hygienic systems, marine components, and high‑strength structural applications.
S31653 is supplied as sheets, plates, strips, tubes, and bars. As a strengthened version of 316L, it offers superior mechanical performance and corrosion resistance for demanding industrial environments.
S31653 performs reliably in seawater, chemical media, mildly acidic environments, and cryogenic conditions. It is widely used in pressure vessels, heat exchangers, hygienic systems, marine components, and high‑strength structural applications.
S31653 is supplied as sheets, plates, strips, tubes, and bars. As a strengthened version of 316L, it offers superior mechanical performance and corrosion resistance for demanding industrial environments.