Boehler S390 Microclean is a high-speed steel with good red hardness. It is produced by powder metallurgy techniques. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on forming, heat treating, and surface treatment. Filing Code: TS-603. Producer or source: Böhler Edelstahl GMBH, Böhler-Uddeholm N. America.