Yield stress from tensile test and yield stress from hardness tests

  1. Mar 21, 2012 #1
    Why can there sometimes be a difference observed between them?
     
  2. jcsd
  3. Mar 21, 2012 #2

    Mech_Engineer

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    Because a hardness test is a highly nonlinear test which is only able to approximate yield strength of the material using some loose relationships.
     
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