[Jewelry making - Article 01256] - Re: [Orchid] Enamelling on Argentium

[peter johns]

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>     I've put up a couple of photos of pieces that ere made of
>     hardenable silver and cracked after being enamelled.... 

    Having spoken to Bill, I find the pieces in the photographs are not
    Argentium Silver but are a Johnson Mathey hardenable silver alloy
    that was sold about 20 years ago.  

    There appears to be some confusion about hardenable silvers - the
    alloy Bill used was an oxidation hardening alloy, Argentium on the
    other hand is a precipation hardenable alloy. With oxidation
    hardening alloys, you cannot reverse the process once the alloy is
    hard.  Precipitation hardening alloys can be hardened and softened
    as many times as required.  

    I am not an enameller.  I am trying to track down somebody in the UK
    who I believe has had success enamelling Argentium. I will post a
    message on Orchid when I have more information. 

Peter Johns
E-mail: peter.johns AT argentiumsilver.co

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