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  • Users: huitball
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  1. huitball

    Removing Mo without attacking W or Re

    I am now trying to remove a Molybdenum mandrel from a piece that also contains Tungsten and Rhenium. Nital worked well for the Molybdenum but also attacked tha Rhenium. HCl, Hf, H2SO4 and Phosphoric acid were all tried and did not work at all. Anybody have any ideas?? Any input would be...
  2. huitball

    attacking mild steel and leaving nitronic 40 alone

    I am looking for a way to remove mild steel from a nitronic 40 piece. The steel was used as a filler during a spraying process. From what I can gather, HCL may be a suitable solution. I have found that it should be less than 1% to not attack the notronic 40. Will that be strong enought to...

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