Need help identifying this alloy

[conundrum374]

I've been taking apart small motors to scrap the copper.
the a/c motors have this metal cast into them, and was hoping someone here had some experience with these and knows what it is
http://i838.photobucket.com/albums/zz307/conundrum374/20151227_124116_zpskombyccm.jpg

[skeettx]

http://i838.photobucket.com/albums/zz307/conundrum374/20151227_124116_zpskombyccm.jpg (http://s838.photobucket.com/user/conundrum374/media/20151227_124116_zpskombyccm.jpg.html)

[conundrum374]

Thanks Skeettx

[skeettx]

You are welcome and it sure looks like pot metal to me

https://en.wikipedia.org/wiki/Pot_metal

Part of the article
The primary component of pot metal is zinc, but often the caster adds other metals to the mix to strengthen the cast part, improve flow of the molten metal, or to reduce cost. With a low melting point of 419 °C (786 °F), zinc is often alloyed with other metals including lead, tin, aluminium, and copper.

[wv109323]

Aluminum is a common material but it could be anything that conducts electric.

[mfraser264]

From my industrial and scrap experience that is a zinc alloy. Zinc is one of less costly metals for generating castings and when weight is not an issue.

[conundrum374]

update
I had a chance to hit this stuff with a torch. there was no color change to the flame. when it started to flow the temp measured at 590 with an infrared heat gun.
one thing I forgot to mention earlier, the cast portion of these is not conducting electricity, these are a flywheel in a fan motor.
the cast portion of these weights is very soft, it dimples similarly to the clip on wheel weights.
I think my next test is to wait for warmer weather and cast this stuff and weigh it.

[starnbar]

Looks like cadmium just a guess though.