Steel Ball stainless, chrome, carbon Steel ball made by our factory are widely used in machinery, bearings, motorcycle, bicycle, car, truck, bus, instruments, electronic applications ect. We mainly supply follows steel balls: 1. Grade: 3-1000 2. Size: 0.5-200mm 3. Materials: Alloy steel ball, aluminium ball, carbon steel ball, ceramic ball, chrome steel ball for bearing, copper ball, stainless steel ball Online Add to Basket Feature: Universal material for ball and roller bearing industry. Chrome steel balls contain chromium and due to through hardening has an excellent surface quality and high load bearing. Hardness: Modern heat-treating facilities complete with controlled atmosphere and temperature, to maintain excellent hardness control with a through hardness of HRC 60 to 67.