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raw material selection

  •  07-22-2008, 5:44 AM

    raw material selection

    Recently I checked the mechanical strength of raw material (En 9 , BS 970)used for a threaded stud. Requirements(specs.) are as follows: UTS(mini.)67 KG/SQ.MM,%ELONGATION IS MINIMUM 12%.

     But I got the actual values UTS 107 KG/SQ.MM AND %ELONGATION is 24%.

    That is the actual values are very much above the requirements. Is it a better results for the purpose of a clamping stud or not?

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