304 / 304L 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: Coil, strip, sheet, foil, bar, and plate.
Standards: ASTM A240/A666; AMS 5513 (304), AMS 5511 (304L)

304 and 304L stainless steel from Source21 are the industry standard austenitic stainless steel grades trusted worldwide for their exceptional corrosion resistance strength and clean professional appearance. Often considered the classic stainless choice Type 304 delivers outstanding performance across a wide range of environments while 304L stainless steel features lower carbon content that enhances weldability and reduces the risk of carbide precipitation making it ideal for welded and fabricated assemblies. Both grades offer excellent forming and deep drawing capability along with hygienic properties well suited 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 matter. Source21 supplies 304 and 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, AMS 5513 for 304, and AMS 5511 for 304L standards. Contact the Source21 team today to place an order discuss finish or form options or get expert support in selecting the right stainless steel solution backed by reliable supply and responsive service.

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