General welding questions that dont fit in TIG, MIG, Stick, or Certification etc.
Keith_J
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  • Joined:
    Tue Dec 20, 2016 1:55 am
  • Location:
    Central Texas

Phosphoric acid will passivate since it only dissolves the iron, leaving chromium. On magnet test, 300 series stainless becomes slightly magnetic with cold work. Test mid sheet and folded corners with a powerful neo magnet. I have some stainless spoons that are only magnetic on the spoon, handles are non magnetic.
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