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Aluminum Etching for visualizing welding without HF Acid

  1. Apr 21, 2017 #1
    Does anyone know of an etching solution suitable for aluminium and its alloys that does not contain hydrofluoric acid?
  2. jcsd
  3. Apr 22, 2017 #2


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    A large amount of information on this subject is available online .

    Just search on ' etchants for aluminium ' .

    Note that some of the etchants recommended for Aluminium pure metal don't always work properly on Aluminium alloys .
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