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Stainless AISI 420 ( En 1.4021 En 1.4028 En 1.4034) Steel Sheets, Steel Strips Designations AISI EN / DIN 420A 1.4021, X20Cr13 420B 1.4028, X30Cr13 420C 1.4034, X46Cr13 420D 1.4037, X65Cr13 AISI 420 ...