COLD VS HOT ROLLED

Improved size and section

  • Tighter size & section tolerances
  • Dimensional consistency within each bar & also from bar to bar

Improved steel surface finish / reduces surface machining & improves quality

  • Cold drawn steel
  • Ground and polished steel
  • Surface improvement (shaving or turning to produce defect free surface)

Improved straightness / facilitates automatic bar feeding

Increased mechanical properties / can reduce the need for hardening

  • Yield strength
  • Tensile strength
  • Hardness

Improve machinability and productivity / enables higher machining feeds & speeds and improved machined finish.

  • Increased machining rates
  • Longer tool life
  • Improved yield

Improved cost effectiveness / optimizes machinability and reduces yield losses

  • Yield & tensile strength is better than hot rolled material
  • Tighter size & section tolerances
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