DIMO 2311 is a modified version of 1.2311 according to Stahl-Eisen Liste and similarly, a modified version of AISI P20 according to ASTM A681. This datasheet provides information on composition, physical properties, and hardness. It also includes information on forming and heat treating. Filing Code: TS-718. Producer or source: AG der Dillinger Hüttenwerke.