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Stainless steel 304/304L bar / seamless tube/ Bolt /Sheet/ Strip

Common Trade Names:304 Stainless/ 304L Stainless ,UNS S30400/UNS S30403,Werkstoff 1.4301/Werkstoff 1.4307

 304/304L is the most widely used Austenitc stainless steel. It accounts for more than 50% of all stainless steel produced, represents between 50%-60% of consumption of stainless materials and fins applications in almost every industry. 304L is a low carbon chemistry of 304, it combined with an addition of nitrogen enables 304L to meet the mechanical properties of 304.  304L often used to avoid possible sensitization corrosion in welded components.lt's non-magnetic in the annealed condition, but can become slightly magnetic as a result of cold working or welding. It can be easily welded and processed by standard fabrication practices.It has excellent resistance to atmospheric corrosion, moderately oxidizing and reducing environments, as well as intergranular corrosion in the as-welded conition It also has excellent strength and toughness at cryogenic temperatures as well.

304/304L Stainless Chemical Composition










304 Stainless





0.08 2.0 1.0 0.03 0.045

304L Stainless


17.5-19.5 balance


0.03 2.0 0.75 0.03 0.045
304/304L Stainless Physical properties
Density 8.0 g/cm³
Melting point 1399-1454 ℃
304/304L Stainless minimum mechanical properties in the roomtemperature
Status Tensile strength 
Rm N/mm²
Yield strength 
Rp 0.2N/mm²
As %
Brinell hardness HB
304 520 205 40 ≤187
304L 485 170 40 ≤187


304/304L Stainless  Standards and Specifications

 ASTM: A 240, A 276, A312,A479
 ASME: SA240, SA312, SA479

304/304L Stainless Available Products in Sekonic Metals

304/304L Stainless Bars & Rods

Round bars/Flat bars/Hex bars,  Size From 8.0mm-320mm, used for bolts,fasteners and other spare parts

304/304L Stainless welding wire & Spring wire

Supply in welding wire and spring wire in coil form and cut length.

304/304L Stainless sheet & plate

Width up to 1500mm and length up to 6000mm,Thickness from 0.05mm  to 100mm.

304/304L Stainless seamless tube & Welded pipe

Standards size and  customized dimension can be produced by us with small tolerance

304/304L Stainless strip & coil

Soft condition and hard condition with AB bright surface, width up to 1000mm

304/304L Stainless Fasteners

304/304L Stainless materials  in forms of Bolts,screws,flanges and other fasterners, according to clients specification.

Why 304/304L Stainless ?

• Corrosion resistance
• Prevention of product contamination
• Resistance to oxidation
• Ease of fabrication
•  Excellent formability
• Beauty of appearance
• Ease of cleaning
• High strength with low weight
• Good strength and toughness at cryogenic temperatures
• Ready availabilitu of a wide range of product forms

304/304L Stainless Application field:

• Food processing and handling

• Heat exchangers

• Chemical process vessels

• Conveyors

• Architectural