1.4311 Stainless Steel Composition & High‑Strength Properties
1.4311 (X2CrNiN18‑10) is a nitrogen‑alloyed austenitic stainless steel grade specified under EN 10028‑7 and EN 10088‑2. It can be considered a strengthened version of 304L, containing 17–19% chromium, 8–10.5% nickel, and 0.10–0.16% nitrogen. This composition increases yield strength and work‑hardening capability while maintaining excellent resistance to intergranular corrosion due to its low‑carbon design.
Compared with 1.4307 (304L), 1.4311 offers higher strength and maintains corrosion resistance after welding without requiring post‑weld heat treatment. It is suitable for pressure vessels, storage tanks, piping systems, food‑grade equipment, and structural components requiring enhanced mechanical performance. Its strong cold‑working response allows significant strength improvement through cold rolling, making it ideal for lightweight yet durable sheet structures.
1.4311 is supplied as cold‑rolled sheets, hot‑rolled plates, strips, tubes, and bars. Its nitrogen‑enhanced alloy design provides a balanced combination of strength, corrosion resistance, and weldability, making it a high‑performance option within the 304 stainless steel family.
Compared with 1.4307 (304L), 1.4311 offers higher strength and maintains corrosion resistance after welding without requiring post‑weld heat treatment. It is suitable for pressure vessels, storage tanks, piping systems, food‑grade equipment, and structural components requiring enhanced mechanical performance. Its strong cold‑working response allows significant strength improvement through cold rolling, making it ideal for lightweight yet durable sheet structures.
1.4311 is supplied as cold‑rolled sheets, hot‑rolled plates, strips, tubes, and bars. Its nitrogen‑enhanced alloy design provides a balanced combination of strength, corrosion resistance, and weldability, making it a high‑performance option within the 304 stainless steel family.