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TP 304L

General Property of 304L Stainless Steel






Alloys 304 (S30400), 304L (S30403), and 304H (S30409) stainless steel are variations of the 18 percent chromium 8 percent nickel austenitic alloy, the most familiar and most frequently used alloy in the stainless steel family. These alloys may be considered for a wide variety of applications where one or more of the following properties are important:

  • Resistance to corrosion
  • 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 availability of a wide range of product forms

Each alloy represents an excellent combination of corrosion resistance and fabricability. This combination of properties is the reason for the extensive use of these alloys which represent nearly one half of the total U.S. stainless steel production. The 18-8 stainless steel, principally Alloys 304, 304L, and 304H, are available in a wide range of product forms including sheet, strip, and plate. The alloys are covered by a variety of specifications and codes relating to, or regulating, construction or use of equipment manufactured from these alloys for specific conditions. Food and beverage, sanitary, cryogenic, and pressure-containing applications are examples.

Alloy 304 is the standard alloy since AOD technology has made lower carbon levels more easily attainable and economical. Alloy 304L is used for welded products which might be exposed to conditions which could cause intergranular corrosion in service.

Alloy 304H is a modification of Alloy 304 in which the carbon content is controlled to a range of 0.04-0.10 to provide improved high temperature strength to parts exposed to temperatures above 800°F.

General Properties
Chemical Composition
Resistance to Corrosion
Physical Properties
Mechanical Properties
Welding
Heat Treatment
Cleaning
304/304L/304LN/304H Tubing and Pipe


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EN 10216-5
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EN 10216-5 1.4462 1.4362 1.4162 1.4410 1.4501 Seamless Tubes
Copper Nickel Alloy Tubing:

UNS N08020 Nickel Alloy 20 Tubing
UNS N02200 Nickel Alloy 200 Tube
UNS N02201 Nickel Alloy 201 Pipe
Monel 400 Pipe
N06600 600 2.4816 Nickel Alloy Pipe
N06601 601 2.4851 Nickel Alloy Tubing
N06625 625 2.4856 Nickel Alloy Tubes
N08800 800 Nickel Alloy Tubes
N08810 800H UNS N08810 Nickel Alloy Tubes
N08811 800HT Nickel Alloy Tubes
UNS N08825 825 2.4858 Nickel Alloy Seamless Pipes
ASTM B622 N10276 Nickel Alloy Seamless Tubing
ASTM B622 N06022 Hastelloy C-22 Nickel Alloy Tubes
C28000 Brass Seamless Tubes C44300 Brass Seamless Tubes
C68700 Brass Seamless Tubes
C70600 Copper Nickel Tubes
C71500 Copper Nickel Tubes
DIN 2391 Seamless Precision Steel Tubes
EN 10305-1 E215 E235 E355 Seamless Precision Steel Tube Tubing Tubes
DIN 2393 St28 St34.2 St37.2 St44.2 St52.3 Welded Precision Steel Tubes
EN 10305-2 E195 E235 E355 Welded Cold Drawn Precision Steel Tube