If you look up ZA-12 it is rated near cast iron for strength. Amazing what a little aluminum and copper can do to improve zinc. Its not your old pot metal!
Wonk
--- In gingery_machines@yahoogroups.com, David Frantz <websterindustro@...> wrote:
>
> I would be concerned about the safety of any zinc rich alloy. This is a personal opinion of course but I've never thought of zinc alloys being extremely malleable. Years ago I worked in a zinc die cast shop and learned that the alloy is critical to product strength. Of course ZA12 doesn't appear to be a die cast alloy so that experience doesn't count. In any event I'd be real concerned about ZA alloys where safety is a big concern.
>
> Wheelium of course should be much better as it is used for rotating objects that have to take a lot of shock.
>
> I'm by no means an expert here so take this as is.
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>
>
> David A Frantz
> websterindustro4at4mac.com
>
> Sent from my iPhone.
>
> On Dec 27, 2010, at 2:57 AM, Matthew Tinker <mattinker@...> wrote:
>
> > Has anybody any thoughts on using ZA12 or wheelium for chuck backplates? I can't se a reason not to, but i'd like your ideas on the subject!
> >
> > Matthew TINKER
> >
> > CNC conversion 1944 Colchester Lathe build-up log
> >
> > http://www.cnczone.com/forums/showthread.php?t=35519
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> > [Non-text portions of this message have been removed]
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> > ------------------------------------
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