Chrome Steel SAE 52100: The most commonly used material for load carrying components in ball bearings and roller bearings. The chemical composition of this steel has high carbon and about 1.5% chromium content. Through heat treatment and stringent processing the finished bearings have a good fatigue life, high strength and resistance to cracking and burring. SAE 52100 is an excellent general purpose bearing steel with a typical surface hardness ranging from 60-64 on the Rockwell Harness Scale (Rc). The corrosion resistance of chrome steel is poor because of low chromium content. The surfaces of the bearings must be protected with a coating of rust inhibitor or oil to stop oxidation.

Strengths: excellent wear resistance, high hardness, good toughness, good dimensional stability, and high fatigue strength.

Weaknesses: low corrosion resistance and poor machinability.

Applications: ball bearings, roller bearings, and other high-load, low-speed applications where durability and reliability are critical.

We are a well known worldwide supply and export Bearing steel in following countries：,Italy, Philippines, France，Ireland, Portugal, Gambia, Thailand, Ukraine, United Kingdom, Netherlands, South Africa, Spain, Turkey, Libya, Romania, Puerto Rico, Azerbaijan, United Arab Emirates, Pakistan, Ghana, Slovakia, Germany, Saudi Arabia, Afghanistan, Bolivia, Switzerland, Bangladesh, Taiwan, Oman, Egypt, Greece, Norway, Singapore, Bulgaria, Estonia, Belgium, Yemen, Hong Kong, Ecuador, Sri Lanka, Nepal, Belarus, Finland, Gabon, Iran, Canada, Argentina, Lebanon.