Advantages of Cold Finished Steel Bars

Aside from being more aesthetically pleasing, cold drawn steel bars have several advantages and superior properties when compared to ordinary hot rolled steel bars. Below are estimated tolerances and properties of different hot-rolled and cold finished steel bar products. Precise figures depend upon the material diameter and grade. Please inquire if you have special tolerance or property requirements.

Tolerances and Properties
  Hot Rolled Cold Drawn Turned & Polished Turned, Ground & Polished Drawn, Ground & Polished
Diameter +/- 0.008" +/- 0.001" +/- 0.001" +/- 0.0002" +/- 0.0002"
Straightness 0.050" Max Per Foot 0.005" Max Per Foot 0.005" Max Per Foot 0.005" Max Per Foot 0.005" Max Per Foot
Yield Strength Comparison Standard Up to 80% Over Hot-Rolled Same as Hot-Rolled Same as Hot-Rolled Up to 80% Over Hot-Rolled
Tensile Strength Comparison Standard Up to 40% Over Hot-Rolled Same as Hot-Rolled Same as Hot-Rolled Up to 40% Over Hot-Rolled
Machinability Comparison Standard Up to 25% Over Hot-Rolled Same as Hot-Rolled Same as Hot-Rolled Up to 25% Over Hot-Rolled
Surface Finish Rough Iron Oxide 30 Ra 45 Ra 10 Ra 10 Ra