Technical data sheets for bearing steel
Definition and applications
Bearing steel is a particular category of construction steels, which are also defined as “Chromium through hardening steel” with 1% Carbon. After quenching, this steel is extremely hard and resistant to wear and to compression. It is universally used for making ball-bearings, rollers and rolling bearing rings, standardizing elements for molds, spindles and reeds for textile machines, parts for weighing scales, etc.
Heat-treated bearing steel is the most widely used category. It has a martensitic and/or bainitic microstructure at room temperature and its final hardness after adequate heat treatment can reach a range of 60-64 HRC and is practically homogeneous throughout the entire section. Internationally, the best-known steel of this category is 100Cr6, an alloy which contains approximately 1% Carbon and 1.5% Chromium and which is used in the construction of standardized elements for molds such as punches, extractors, plugs, sockets, columns etc.