Case hardening steels
Part of our range consists of hardenable steels specially intended for case hardening. It is a process where you thermochemically increase the carbon content of the surface of a low-carbon steel. The carbon content of the case hardening steel is usually around 0.2%. The carbon content is raised a bit below the surface of the steel by adding carbon to the atmosphere of the furnace, whereupon the carbon diffuses into the steel. The carburizing depth is normally between 0.5 – 2 mm and is controlled by temperature, carbon content in the atmosphere and holding time in the oven. In the charred layer, the carbon content is normally around 0.7 – 0.9% carbon.
The next step in the process is to quench and harden the steel to obtain a significantly stronger Martensite conversion in the charred surface layer. The result is a surface hardness around 58 – 65HRC. Seat curing does not need to be followed by a tempering. The hardness of the base material is controlled by the type of hardening steel chosen and the dimension of the hardened material.
Euronom | Executions | Material | Swedish standard | ASTM, ASME | AISI | W.Stoff | Operating temperature | Inquiry | |
---|---|---|---|---|---|---|---|---|---|
18CrNiMo7-6 |
Bars | Case hardening steels | 1.6587 | ||||||
18CrNi8 |
Bars | Case hardening steels | 1.5920 | ||||||
20MnCr5 |
Bars, Plates | Case hardening steels | 1.7147 | ||||||
16MnCr5 |
Bars, Plates | Case hardening steels | SS 2511 | 1.7131 |