Fields of use

Bolts, shafts, gear wheels, etc. with hard surface and tough core.

Description

Carburizing steels have a carbon content of less than 0.25% and small levels of alloying elements, which aid through-tempering (Cr, Mn, Ni, Mo) on one hand and form hard carbides (Cr, Mo) with the introduced carbon on the other hand, which increases the abrasion resistance.

Properties

Outstanding combination of properties such as durability, high abrasion resistance, resistance to flexural stress and impact loading. Very good endurance limit due to compressive strength in the hard surface. Tough, low-carbon core.

Welding:
Cannot be welded (C15 can be welded very well before carburizing)
Distortion:
Distortion particularly in parts made of unalloyed steels (water-hardening) and/or with complicated form.
Necessary postprocessing:
By grinding certain functional sections, negative properties (e.g. radial deviation) are reduced and tolerances and surface roughness can be diminished.

Product offers from Stahl-Contor from the Embrach service centre

Carburization

Tough components are obtained through the use of low-carbon steels. However, these only adopt a low level of hardness during the quenching process. For this reason, carbon is applied to the peripheral area using diffusion, so that a layer of temperable steel with approx. 0.8% carbon is created. During the quenching process, the core is tempered and the peripheral layer is hardened. This hardening procedure is made up of two processes, the carburizing and the actual hardening.