Tuesday, May 24, 2011

304 Stainless Steel

Type 304 stainless steel (UNS S 30400) is the most common austenitic chromium-nickel stainless steel. It can be used in a multitude of applications.

Specifications

ASTM A240 for annealed condition
ASTM A666 for tempered material*
Composition per ASTM A240
Carbon.07 Max
Manganese2.00 Max
Phosphorus.045 Max
Sulfur.030 Max
Silicon.75 Max
Chromium17.50 - 19.50
Nickel8.00 - 10.50
Nitrogen0.10 Max
Molybdenum 
Mechanical Properties (Annealed, Per ASTM A240)
UTS75,000 ksi Min
Elongation % in 2"40.00 Min
Rockwell HardnessRB92.00 Max
* Tempered mechanical properties are available upon request.

304 stainless steel applications

304 stainless steel rolled coil is currently used in an extensive range of applications and industries including: automotive, air bag sensors, appliances, beer barrels, chemical equipment, clamps, cooling coils, cryogenic components, dairy equipment, evaporators, food handling equipment, hinges, hypodermic needles, marine, milking machines, motors, nuclear vessels and components, oil well filter screens, pressure vessels, sanitary fittings, shipping drums, textile dyeing equipment.
Magnetic Properties: 304 flat rolled stainless steel is generally non-magnetic and becomes slightly magnetic only when cold-worked.
Forming: Type 304 can be easily formed into most shapes. It is possible to conduct more than one forming operation before a re-anneal if necessary.

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