[Jewelry making - Article 00746] - [Orchid] Yellow Film on Argentium Sterling Silver

[Cynthia Eid]

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Hi,

>     The article in this months (Feb 06) Lapidary journal, the guy who
>     originally developed AS, baked his at 300, the rest of the sites on
>     this item, recommend 500 or 550, I have done mine at 450 and 500
>     and see no difference in the hardness I get. I leave them in 30
>     minutes After baking AS though you will have a light yellow to tan
>     coating, pickle to remove. If you are doing rings, size before
>     hardening, I buggered up a ring stretcher forgetting to do that.

    As has been said, pickle easily removes any discoloration that has
    been made by heat hardening 

    It may not have been clear in the article (which I have not yet
    seen---perhaps I forgot to renew my subscription?): Argentium
    Sterling can be hardened at temperatures lower than 580 degrees F.,
    but the time should be longer for lower temperatures. 365 degrees F
    is considered to be the minimum temperature. At 365 degrees F, the
    Argentium Sterling should be heated for two hours. At any
    temperature, it is ok to heat for longer. The extra time has no
    negative effect.

Cynthia Eid
http://www.cynthiaeid.com/

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