Steel and processing method for the manufacture of high strength, fracture-splittable machinery components

The invention relates to a steel and a processing method for high-strength fracture-splittable machine components that are composed of at least two fracture-splittable parts. The steel and method are characterized in that the chemical composition of the steel (expressed in percent by weight) is as follows: 0.40% C 0.60%; 0.20% Si 1.00%; 0.50% Mn 1.50%; 0% Cr 1.00%; 0% Ni 0.50%; 0% Mo 0.20%; 0% Nb 0.050%; 0% V 0.30%; 0% Al 0.05%; 0.005% N 0.020%, the rest being composed of iron and smelting-related impurities and residual matter.