Stainless Steel 304  

Stainless Steel 304/304L is of high quality. Stainless Steel 304 is a variation of the basic 18-8 grade, Type 302, with a higher chromium and lower carbon content. Lower carbon minimizes chromium carbide precipitation due to welding and its susceptibility to inter-granular corrosion. In many instances, it can be used in the ”as-welded“ condition, while Type 302 must be annealed in order to retain adequate corrosion resistance.

Type 304L is an extra low-carbon variation of Type 304 with a 0.03% maximum carbon content that eliminates carbide precipitation due to welding. As a result, this alloy can be used in the”as-welded“condition, even in severe corrosive conditions. It often eliminates the necessity of annealing weldments except for applications specifying stress relief. It has slightly lower mechanical properties than Type 304.

Typical Uses include architectural mouldings and trim, kitchen equipment, welded components of chemical, textile, paper, pharmaceutical and chemical industry processing equipment.

Available forms of Stainless Steel 304/304L:

Stainless Steel 304 is available in thicknesses from 0.01" to 0.25" (0.025 to 6.35 mm) max. and widths up to 48" (1219 mm). For other thicknesses and widths, inquire.

Composition of Stainless Steel 304/304L:

  Type 304% Type 304L %
Carbon 0.08 max 0.03 max
Manganese 2.00 max 2.00 max
Phosphorus 0.045 max 0.045 max
Sulfur 0.030 max 0.030 max
Chromium 18.00-20.00 18.0-20.0
Nickel 8.00-12.00 8.0-20.0
Nitrogen 1.10 max 1.10 max
Iron Balance Balance


AFNOR Z7CN 18-09 ASTM A249 ASTM A511
AISI 304 ASTM A269 ASTM A554
AMS 5501 ASTM A270 ASTM A580
AMS 5513 ASTM A271 ASTM A632
AMS 5560 ASTM A276 ASTM A666
AMS 5563 ASTM A312 ASTM A688
AMS 5564 ASTM A313 ASTM A793
AMS 5565 ASTM A314 ASTM A813
AMS 5566 ASTM A320 ASTM A814
AMS 5567 ASTM A336 ASTM A851
AMS 5639 ASTM A358 MIL S-27419
AMS 5697 ASTM A368 MIL S-5059
ASTM A167 ASTM A376 MIL T-5695
ASTM A182 ASTM A409 MIL T-6845
ASTM A193 (304, B8, B8A) ASTM A430 MIL S-27419
ASTM A194 ASTM A473 MIL T-8504
ASTM A213 ASTM A478 MIL T-8506
ASTM A240 ASTM A479 QQ S763
ASTM A492 DIN 1.4301 QQ S766
ASTM A493 MIL A-23196 UNS S30400


  • Principal Design Features
    One of the most widely used and oldest of the stainless steels. This was originally called 18-8 which stood for its chromium and nickel content. It possesses an excellent combination of strength, corrosion resistance and fabricability. It is available in the widest variety of forms and sizes of any stainless steel.

  • Applications :
    The list is endless. Almost every conceivable industry uses some of this material in some way. Everything from stovetops to ball point pen barrels to flatware to fasteners has been fabricated from this alloy.

  • Forms & shapes :
    Wire, Sheet, Plate, Strip, Round Bars, Hexagonal, Flats, Square, Angle, Channel, Blanks, Tubes, Billets, Pipes, Pipe Fittings, Forging Rings, Special Shape Forgings, Fasteners Etc.

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