Hello to all technetters :

    Recently I have been trying to figure out the best pretreatment method for
    alloy42 materials for further plating processes .Could someone share some
    info on this , since alloy42 materials is very sensitive  in nature . We
    have tried using 5% sulphuric acid and others proprietary chemicals also
    sulphuric acid based , the operating window is limited .

    Thanks .

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