1.4406 Stainless Steel Composition & High-Purity Properties
1.4406 (X2CrNiMoN17-13-3) is a high-purity, nitrogen-alloyed austenitic stainless steel grade specified under EN 10028-7 and EN 10088-2, equivalent to 316LN. Its composition includes 16.5–18.5% chromium, 12–14% nickel, 2–2.5% molybdenum, and 0.10–0.16% nitrogen, providing enhanced yield strength, improved pitting resistance, and stable weld performance.
Compared with 1.4404 (316L), 1.4406 offers higher strength and superior corrosion resistance, making it suitable for cryogenic pressure vessels, nuclear applications, chemical reactors, and hygienic processing systems. It maintains excellent weldability and retains corrosion resistance after welding, supporting fabrication-intensive structures.
1.4406 is supplied as plates, tubes, bars, and strips. It is widely used in LNG systems, chemical processing equipment, pharmaceutical installations, marine engineering, and high-purity fluid systems. As a strengthened version of the 316 family, it provides reliable performance in aggressive and low-temperature environments.
Compared with 1.4404 (316L), 1.4406 offers higher strength and superior corrosion resistance, making it suitable for cryogenic pressure vessels, nuclear applications, chemical reactors, and hygienic processing systems. It maintains excellent weldability and retains corrosion resistance after welding, supporting fabrication-intensive structures.
1.4406 is supplied as plates, tubes, bars, and strips. It is widely used in LNG systems, chemical processing equipment, pharmaceutical installations, marine engineering, and high-purity fluid systems. As a strengthened version of the 316 family, it provides reliable performance in aggressive and low-temperature environments.