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304/304L Stainless Steel Tubing




304/304L is dual certified stainless steel tubing is a very low carbon "18-8" austenitic chromium-nickel stainless steel with good corrosion resistance and superior resistance to inter-granular corrosion following welding or stress relieving. The low carbon percentage limits the formation of harmful carbides to such an extent that this grade may be safely used for most operations of welded construction, and where the service temperature is limited to 800° F.

It is non-magnetic in the annealed condition and not hardenable by heat treatment. Both hardness and tensile strength can be increased by cold working, which may cause slight magnetism. The dual certified 304/304L meets specifications for both 304 and 304L stainless steel, and may be interchanged and used safely for either grades application. 304/304L stainless steel is available in rounds, squares, rectangles, structural angle shapes, round and rectangular welded tube, and schedule pipe. 304 sheet and plate can be cut into shapes or rings on Speedy Metals High Definition Plasma cutter.

Mchineability and Weldability
Machinability is rated at 45% of B1112. Average cutting speed 75 ft/min. Easily welded by all commercial processes except forge or hammer welding. The resultant weld has good toughness and ductility. Annealing is recommended after forging to maintain maximum corrosion resistance. 304/304L can be forged between 2100°-2350° F. Do not forge below 1700° F

Heat Treating
304/304L is not hardenable by heat treatment. Cold working increases tensile strength and hardness. Annealing range is between 1850° and 2050°F. Cool rapidly. Water should be used for heavier sections; air for lighter sections. The stress relieving range is between 400° and 750°F.



Chemical Analysis
Carbon (C) Manganese (Mn) Silicon (Si) Chromium (Cr) Nickel (Ni) Molybdenum (Mo) Phosphorus (P) Sulfur (S)
0.03 2 0.75 18-20 8-12 0.4-0.6 0.045 0.03

304/304L stainless generally conforms to ASTM A213, ASTM A312, AMS 5639

Mechanical Properties
Tensile Strength (PSI) Yield Strength (PSI) Reduction of Area Elongation in 2" Brinell Hardness
90,000 40,000 70 50 163

The above values are average and may be considered as representative of 304/304L stainless

Application

304/304L is used almost exclusively for parts requiring machining, welding, grinding, or polishing where good corrosion resistance is also required. It is a good general all-purpose stainless grade. Good in corrosive environments as in paper and chemical industries and cryogenic services. Used where corrosion resistance and good mechanical properties are primary requirements. 304/304L is widely accepted in such industries as dairy, beverage, and other food industries where the highest degree of sanitation and cleanliness is of prime importance. Parts for handling acetic, nitric, and citric acids, organic and inorganic chemicals, dyestuffs, crude and refined oils, etc., are fabricated from this material. Because of its lack of magnetism it is highly desirable for instruments. It is also widely used for architectural trim. 304 sheets are used in applications where corrosion resistance is required, but elevated temperatures are not involved. 304/304L finds particular use in applications requiring welding. 304/304L has good drawing, forming, and stamping properties.



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Stainless Steel Tubing and Pipe:

Heat Exchanger Tubes
U Bend Stainless Steel Tubing
Duplex Stainless Steel Pipe
Boiler Tubes, Condenser Tubes
Stainless Steel Seamless Pipes Corrugated Seamless Stainless Steel Pipe Tube
Cold Drawn Bright Annealing Stainless Steel Tubes
Heat resistant Stainless Steel Tubes
Welded Stainless Steel Pipe
Corrosion Resistant Stainless Steel Tube
Corrosion Resistance of Stainless Steel Tubes
Nickel Alloy Seamless Tubes:

UNS N08020 2.4600 Nickel Alloy 20 Seamless Tubing
UNS N02200 2.4066 200 Nickel Alloy Seamless Tubing
UNS N04400 400 Nickel Alloy 2.4360 Nickel Alloy Tubing
UNS N08800 800 Nickel Alloy Seamless Tubes
UNS N08810 800H UNS N08810 Nickel Alloy Seamless Tubes
UNS N08811 800HT Nickel Alloy Seamless Tubes
UNS N08825 825 2.4858 Nickel Alloy Seamless Tubes
UNS N06600 600 2.4816 Nickel Alloy Seamless Tubes
UNS N06625 625 2.4856 Nickel Alloy Seamless Tubes
UNS N10276 C-276 2.4819 Nickel Alloy Seamless Tubing
Why Choose Donghao Steel?

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