ASTM A240 304L Stainless Steel Composition & Low‑Carbon Properties
ASTM A240 304L (UNS S30403) is the low‑carbon variant of the 304 austenitic stainless steel family. With 18–20% chromium, 8–12% nickel, and a carbon content below 0.03%, it minimizes carbide precipitation during welding, significantly improving resistance to intergranular corrosion.
304L performs reliably in atmospheric conditions, fresh water, food‑grade media, and mildly corrosive environments. It is widely used in pressure vessels, storage tanks, piping systems, food‑processing equipment, and architectural components. Its excellent formability supports deep drawing, bending, welding, and polishing operations.
304L is supplied as cold‑rolled sheets, hot‑rolled plates, strips, tubes, and bars. As a weld‑optimized version of 304, it provides enhanced reliability in welded structures across chemical, food, construction, and mechanical industries.
304L performs reliably in atmospheric conditions, fresh water, food‑grade media, and mildly corrosive environments. It is widely used in pressure vessels, storage tanks, piping systems, food‑processing equipment, and architectural components. Its excellent formability supports deep drawing, bending, welding, and polishing operations.
304L is supplied as cold‑rolled sheets, hot‑rolled plates, strips, tubes, and bars. As a weld‑optimized version of 304, it provides enhanced reliability in welded structures across chemical, food, construction, and mechanical industries.