Bright steels are produced by various processes of cold working therefore, they may be said as cold - worked steels. They are made in very wide range of sizes, e . g., in rounds , squares , hexagons , flats and special sections. Bright steel bars are characterized by a clean, smooth finish of close dimensional tolerance.
The advantage of cold working in bright steels is that the machinability of steels of the lower carbon grades is improved. The ferrite constituent which is the main one in low carbon steels is work hardened by cold working and this leads to crisper machining, less tendency to drag , better finish and smoother threading.
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