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How to tell difference between Hot-rolled steel and col-rolled steel

  1. Oct 27, 2005 #1
    I am assigned a job to check some materials of steel sheet.
    Is there anyone here can help me to tell it by just looking?

    I know hot-rolled has rougher surface than cold, but anthing else?

    Thank you so mcuh!
  2. jcsd
  3. Oct 29, 2005 #2


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    That's the surest way of telling (and usually, hot-rolled steel is more likely to have rusted). Also, no sheet that's 3/16" or thicker (roughly thicker than gauge 7) can be a cold-rolled sheet.
  4. Oct 29, 2005 #3
    thank you Gokul 43201.
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