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Stainless Steel Structurals
Grade 304 and 304L
Description

The most widely used of austenitic grades. 304 offers good corrosion resistance to many chemicals and industrial atmospheres. Generally considered non-magnetic. It can become slightly magneting when cold-worked. 304 is non hardenable by heat treatment. In 304L, the carbon content has been lowered to .03% max. for corrosion resistance at heat affected zones from welding.

Typical Applications
  • Architectural Trim
  • Beer Barrels
  • Cryogenic Vessels
  • Dairy Equipment
  • Wide Variety of Food Applications
Chemical Composition
 
304
304L
Chrome (Cr) : 18.00 - 20.00 18.00 - 20.00
Nickel (Ni) : 8.00 - 11.00 8.00 - 11.00
Carbon (C) : .08 max .03 max
Manganese (Mn) : 2.0 max 2.0 max
Silicon (Si) : 1.0 max 1.0 max
Mechanical Properties (Annealed)
 
304
304L
Tensile-KSI: 85 75
Yield-KSI: 34 30
Elongation in 2"-%: 60 25% min60
Reduction in Area -% Min: 70 --
Brinell Hardness : 170 160
Welding Characteristics
Very good - tough welds
Machining
Compared to B1112 screw stock - 45%
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