Metal Additive Manufacturing Conference - MAMC 2022

Maraging steels are a well-established material system for Additive Manufacturing (AM), especially for laser powder bed fusion (L-PBF), due to the high hardness & toughness produced by a martensitic aging heat treatment, which does not require carbon. Maraging steels have been successfully applied to L-PBF for conformal cooled tooling and tyre mould production. However, standard maraging steels, such as 18NI300, include significant cobalt and nickel content, where new legislation has been created, due to the health & environmental hazards, to limited their use and promote alternatives. Therefore, the development of cobalt free maraging steels have attracted the attention of AM powder producers to create alternatives to the standard composition of maraging steel, including 18NI300. Preliminary results for an new cobalt free maraging steel is presented and compared with the latest information on 18NI300.