Kurtsite

Brent:

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,

Also see

Pittsburgh Pete

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 favour.

It's spelled Kirksite and is common material for making molds. Google: Results 1 - 10 of about 666 for kirksite. (0.07 seconds)

Mark

Already answered back on Oct 13th. To add a bit more, there is an MSDS sheet

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.

Pittsburgh Pete

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