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Recent content by sjwarren

  1. sjwarren

    Porosity in threaded holes

    Thanks you all for the responses and I apologize for not getting back you faster. The intended part is an aluminum engine block and the hole in question if for the long bolts that hold the head onto the block. So, obviously a pretty high stress joint. As of right now, we are getting porosity...
  2. sjwarren

    Porosity in threaded holes

    Howdy - I was wondering if there is a standard or spec for the size of porosity allowable in a threaded hole. For example, if I had a cast part that then had threads machined into it, and that machining exposed a porosity hole. What would be considered too big of a hole? Thanks for any help.

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