AISI 304L (UNS S30403) Austenitic Stainless Steel
(UNS S30400 / S30403 | EN 1.4301 / 1.4307)
Overview:
The most widely used stainless steel in the world — the “classic” choice for corrosion resistance, strength, and clean appearance. 304L’s low carbon content makes it a dream for welding.
Why It’s Everywhere:
- Excellent corrosion resistance in a wide variety of environments.
- Superb forming and deep-drawing ability.
- Readily weldable and hygienic for food-grade use.
Common Applications:
Tanks, sinks, kitchen and medical equipment, marine fittings, architectural panels, and electrical enclosures.
Finishes: 2B, BA, #4, and mirror.
Available Forms: Available Forms: Coil, strip, sheet, foil, bar, and plate.
Standards: ASTM A240/A666; AMS 5513 (304), AMS 5511 (304L)
304L stainless steel from Source21 is a widely used austenitic stainless steel grade valued for its excellent corrosion resistance clean appearance and superior weldability. Featuring low carbon content Type 304L minimizes the risk of intergranular corrosion making it an ideal choice for welded and fabricated components exposed to demanding environments. It offers excellent formability and deep drawing capability while meeting strict hygiene requirements for food processing medical and sanitary applications. Common uses include tanks sinks kitchen and medical equipment marine fittings architectural panels and electrical enclosures where durability and long term performance are critical. Source21 supplies 304L stainless steel in coil, strip, sheet, foil, bar, and plate with finish options including 2B, BA, number 4, and mirror, all produced to meet ASTM A240, ASTM A666, and AMS 5511 standards. Contact the Source21 team to place an order explore available forms and finishes or receive expert guidance supported by reliable supply and responsive service.