Abstract: A corrosion resistant austenitic stainless steel alloy and articles made therefrom consisting essentially in weight percent of______________________________________ (w/o) ______________________________________ C 0.03-0.1 Mn 4-11 Si 0.6 Max. Cr 20-23 Ni 14-18 Mo 4.8-5.6 B 0.01 Max. Ce + La 0.4 Max. Al 0.1 Max. C + N 0.23 Min. ______________________________________in which nitrogen ranges from a minimum of 0.15 w/o to no more than the amount that can be retained in solid solution, the balance being essentially iron, and the elements being balanced so that cold rolled annealed specimens prepared with a crevice and tested in accordance with ASTM G48-76 in 10 w/o FeCl.sub.3 .multidot.6H.sub.2 O at 50.degree. C. for 72 hours have a weight loss of less than 0.3 gram. An embodiment that is particularly well suited for making autogeneously welded articles, e.g.

Abstract: An austenitic stainless corrosion resistant alloy consisting essentially in weight percent (w/o) of______________________________________ Broad-(w/o) Preferred-(w/o) ______________________________________ C 0.06 Max. 0.015-0.025 Mn 1.00 Max. 0.50 Max. Si 0.50 Max. 0.40 Max. P 0.03 Max. 0.03 Max. S 0.03 Max. 0.005 Max. Cr 22-26 23.5-24.5 Ni 32.5-37 32.5-34.5 Mo 5-6.7 5.5-6.2 Cu 1.0-4 3.0-3.5 B 0.005 Max. 0.0015-0.0035 Nb 1 Max. 0.15-0.25 N 0.4 Max.* 0.05 Max. Ce + La 0.4 Max.** 0.3 Max.** ______________________________________ *OR the limit of solubility. **Amount added as misch metal.The balance is iron and incidental impurities. The alloy is useful for the production of parts requiring good resistance to corrosion. It has good resistance to pitting and stress corrosion when exposed to chlorides and has good resistance to oxidizing media. The alloy is particularly useful as parts for fume scrubbers and in phosphoric acid plants.