email@example.com (Brent) wrote in message
According to my old Woldman's Enginnering Alloys book,
Kirksite is a zinc alloy containing nominally 3.5% copper, 4%
aluminum, 0.04% magnesium.
See Eastern Alloys, http://www.eazall.com/mold-base.htm
and also try Google under mold-base alloys
Also see http://www.armstrongmold.com/pages/kirksitearticle.html
On 13 Oct 2004 11:31:55 -0700, firstname.lastname@example.org (Brent) wrote:
Never heard of it by that name.
In the twenties there were a bunch of zinc-based bearing alloys. They
seemed to work well, but like the early die-casting alloys they
suffered from impurites between the grains (lead being one culprit)
and disintegrated after a few years. As a result, they fell from
email@example.com (Mark) wrote in message
Already answered back on Oct 13th. To add a bit more, there is an MSDS
giving the composition as Zn with 3.9 to 4.3%Al, and 3.0 to 3.5%Cu.
The copper content is a bit higher than the 2.5 to 3.0% for the "No.2"
die casting alloy, aka AC43A or UNS Z35541, which may also loosely be
referred to as Kirksite by some.
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