Engineering steels are used for a variety of applications throughout the mechanical engineering industry. These include quenched and tempered steels, nitriding steels and high-strength, maraging steels for lightweight construction, as well as case-hardening steels for gear manufacturing and highly stressed plastic moulds.
Engineering steels are used for a wide range of applications throughout mechanical engineering. Components made from case-hardening steels with a low carbon content are carburised in the surface layer. Subsequent hardening results in a wear-resistant surface layer with a hardness of up to 62 HRC and increased fatigue strength. Alloying elements such as manganese, nickel and chromium increase the core strength. The main areas of application are gear manufacturing and tools in plastics processing.
Quenched and tempered steels offer high yield strengths with good toughness and are used for structural parts in mechanical engineering and toolmaking. Nitriding steels are quenched and tempered steels with higher proportions of chromium, molybdenum, vanadium and aluminium and are particularly suitable for low-distortion surface hardening using nitriding processes. This significantly increases wear resistance and fatigue strength. 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 and in mechanical engineering and toolmaking, e.g. for fastening elements, shafts, springs and gear parts.
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