Cold Finished Flat, aka CRS Flat or Cold Roll Flat Bar is a steel product with closer dimensional accuracy, tolerances, and smoother surface finish than hot rolled bar. Cold Finish Flat is a general purpose low carbon steel with good case hardening qualities and is especially suited for cold forming and bending. Overall, cold finished steel flats tend to have higher tensile and yield strength, tighter size tolerances, and improved smoothness when compared to hot finished steel.