EN41B is a chromium-aluminum-molybdenum nitriding steel. This case-hardening steel offers high wear resistant properties together with toughness and ductility. This Alloy steel has the capability to achieve case hardness up to 68 Hrc.
It is also called nitrating steel. In nitrating tratement it is hardened to a certain depth according to the application to improve the wear resistance and improve the impact load on material.