Maraging steels are high-strength, tough steels of the Fe-18% Ni-Co-Mo type. Strengths of over 2000 MPa can be achieved with a simple, low-distortion heat treatment. These steels are used in lightweight construction in the aerospace industry, in mechanical engineering and toolmaking, e.g. for fasteners, shafts, springs and gear parts.
Maraging steels are ultra-high-strength steels of the Fe-18% Ni-Co-Mo type that achieve strengths of over 2000 MPa with a simple, low-distortion heat treatment. However, these steels are not corrosion-resistant.
Maraging steels are melted in a vacuum induction furnace and then remelted in a vacuum arc furnace due to their high alloy content, particularly their high titanium and aluminium content.
Applications for such steels include mechanical engineering, e.g. fastening elements, shafts, springs, gears and lightweight construction, e.g. in the aviation industry, but also for components in tools and machine tools.