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Chromoly strength?

Discussion in 'Off Topic Hot Rods & Customs' started by JimSibley, Dec 17, 2025 at 12:18 PM.

  1. JimSibley
    Joined: Jan 21, 2004
    Posts: 4,059

    JimSibley
    Member

    I am in search of a chart for strength comparison of seamed tube, dom and chromoly. I need to know how .065 x 1.5 chromoly compares to .095 x 1.75 seamed tube. Any help would be great.
     
  2. squirrel
    Joined: Sep 23, 2004
    Posts: 59,983

    squirrel
    Member

    What do you mean by "strength"?

    It mostly depends on the application...but in bending, you can compare the stress from applying 1000 ft lbs to both sizes of tube

    pipe.jpg

    the larger tube has about half the stress as the smaller tube.
    You can look up the yield and ultimate strength for the materials you plan to compare. Consider weight and fabrication difficulty when you make your decision.
     

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