Stainless Steel 316, 316L, UNS S31600, UNS S31603, WNR 1.44

Grades 1.4401 and 1.4404, commonly known as stainless steel grades 316 and 316L, are the second most commonly used stainless steel grade after 304/304L. 316 is basically an improved version of 304, with addition of molybdenum and slightly higher content of nickel.

However, both 304 and 316 grades have significant commercial usage due to their good corrosion resistant properties, crevice corrosion and cost effectiveness. Stainless steel 316 contains an addition of molybdenum that gives it improved corrosion resistance, particularly in chloride environments.

316L, the low carbon version of Stainless steel 316, while Type 316H is a higher carbon variant of 316 mainly suitable for elevated temperature applications. 316Ti is a titanium stabilized version of 316. Resistance to sensitization is achieved in type 316Ti with titanium additions to stabilize the structure against chromium carbide precipitation, which is the source of sensitization.

Given the good forming and welding characteristics, 316L grade stainless steel pipes and tubes are widely used in marine, petrochemical, power generation and external architectural applications.

Stainless Steel 316, 316L, UNS S31600, UNS S31603, WNR 1.4401, WNR 1.4404 Pipes, Tubes / Tubing, and Butt Weld Fittings

Stainless Steel 316/316L pipes and tubes are available in both seamless and welded form in OD and NB sizes. In addition to standard sizes, which are available in stock, our specialty is to manufacture and supply custom size 316/316L cold drawn seamless tubes from our factory.