Stainless Round Bar 440C offers high strength, moderate corrosion resistant, good hardness and wear resistance After heat treatment, 440C is capable of attaining the highest strength, hardness and wear resistance of all the stainless alloys It is typically used in rolling element bearing, valve seats, highquality knife blades, surgical instruments, chisels, gage blocks, cutlery, ball bearings and races, molds and dies, knives, valve components, measuring instruments