304 Stainless Steel

304 Stainless Steel accounts for more than 50% of all stainless steel production.

One of the most versatile and commonly used stainless steels available, Type 304 stainless steel is the most widely used alloy of this type. We stock both Type 304 and Type 304L stainless steel  in Bar, Wire, Sheet, Strip and Billets.

Type 304 has excellent welding and deep drawing properties, making it ideal for fabrication, easy to clean and it’s asthetically pleasing looks make it ideal for many applications.  Contact us today for the best prices.

304 Stainless Steel Bar Grinding Services

  • 304 stainless steel is basically the same as Type 302 except for a higher chromium and lower carbon content. Its lower carbon minimizes chromium carbide precipitation due to welding and its susceptibility to intergranular corrosion.
  • Its lower carbon minimizes chromium carbide precipitation due to welding and its susceptibility to intergranular corrosion.
  • In many instances, Type 304 can be used in the “as welded” condition while Type 302 must be annealed in order to retain adequate corrosion resistance.
  • Type 304 has the same excellent combination of strength, corrosion resistance and workability as Type 302, and it costs the same. Consequently this type is widely used and is more popular than type 302.

Available Forms

Types 304 and 304L stainless steel are available in:

  • Bar
  • Wire
  • Sheet
  • Strip
  • Billets

Typical Applications

  • Low carbon Content of 304 and 304L is more conducive to welding than type 302
  • Applications include architectural moldings and trim and kitchen equipment
  • Alloys are widely used for welded components of processing equipment for textile

304L Stainless Steel

  • Type 304L is an extra low carbon variation of Type 302. The .03% maximum carbon content eliminates carbide precipitation due to welding.
  • Consequently, the alloy can be used in the “as welded” condition even in severe corrosive conditions. In many cases it eliminates the necessity of annealing weldments except for applications where stress relief is specified.
  • Type 304L has slightly lower mechanical properties than Type 304.

Specifications

Sheets and Plates

  • MIL-S-5059
  • AMS 5513
  • ASTM A 167
  • ASTM A 240

Bars, Wire, and Billets

  • MIL-S-7720
  • QQ-S-763
  • AMS A 276
  • ASTM A 276
  • ASTM A 479

Type 304 Composition & Properties

Properties

Type 304%

Carbon

.08 max

Manganese

2.00 max

Phosphorus

.045 max

Sulfur

.030 max

Silicon

1.00 max

Chromium

18.0 – 20.0

Nickel

8.0 – 12.0

Type 304L Composition & Properties

Properties

Type 304L%

Carbon

.03 max

Manganese

2.00 max

Phosphorus

.045 max

Sulfur

.030 max

Silicon

1.00 max

Chromium

18.0 – 20.0

Nickel

8.0 – 12.0

304 Stainless Steel

Properties

Sheet & Strip

Bar & Wire

Ultimate Tensile Strength, psi

85,000

85,000

.2% Yield strength, psi

35,000

35,000

Elongation, % om 2″

55

60

Rockwell Hardness

B80

B80

Reduction of area %

NA

70

Impact Strength, Izod V Notch, ft-lbs

NA

100-120

Endurance Limit, psi

NA

34,000

304L Stainless Steel

Properties

Sheet & Strip

Bar & Wire

Ultimate Tensile Strength, psi

80,000

80,000

.2% Yield strength, psi

30,000

30,000

Elongation, % om 2″

55

60

Rockwell Hardness

N75

B75

Reduction of area %

NA

70

Impact Strength, Izod V Notch, ft-lbs

NA

100-120

Endurance Limit, psi

NA

34,000

Machinability

  • When machined, Types 304 and 304L will work-harden.
  • Therefore tools must not ride or glaze the surface without cutting.
  • Heavy feeds and slow speeds are recommended

Formability

  • 304 stainless steel and 304L stainless steel have very good drawability.
  • Their combination of low yield strength and high elongation permits successful forming complex shapes.
  • However,these grades work harden rapidly.
  • To relieve stresses produced in severe forming spinning, parts should be full annealled or stress-relief annelaed as soon as possible after forming.

Corrosion Resistance

  • Like Type 302, Types 304 and 304L stainless steel have excellent resistance to a wide range of corrosive media and to atmospheric exposures.
  • The low carbon content of Type 304 and especially 304L, by reducing or eliminating carbide precipitation due to welding, makes these types of stainless suitable for a much wider range of corrosive service than Type 302.

Weldability

  • Both these stainless steels are readily welded by most welding processes such as TIG, MIG and resistance welding.
  • However, all arc welding not using a shielded gas should have the filler rods coated.
  • Type 308 and 308L welding rods are suggested for best results.

If you don’t have 100% confidence in your current supplier or you are looking for a new one, let’s talk. 

When you partner with Wisconsin Metal Tech for your metal machining and supply needs you can count on quick turn around times, consistently on-time deliveries, and quality products.

We take pride in always going the extra mile for our customers because we are invested in your success.

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