20MnCrS5

Alloy case-hardening steel, rolled according to DIN EN 10084/DIN EN ISO 683 or in forged condition which is not defined in a standard.

Use for more highly stressed vehicle and machine components such as camshafts, gearing parts and bolts where moderately high strength combined with high toughness is required. The annealed delivery conditions ensure defined hardness spans and thus consistent machinability. Case hardening of the components, in which carbon is introduced into the edge area, makes it possible to achieve a moderately high hardness and wear-resistant surface with a tough core. If the focus is on fatigue strength and machining is only of secondary importance, the very similar 20MnCr5 variant but often with a lower sulphur content should be considered. In some cases, double certification of both variants 20MnCr(S)5 takes place.