tecnovist Posted November 19, 2007 Share Posted November 19, 2007 Its my under standing that carburetors are not made from aluminium i have allways knowen the metal aloy as Die Cast ---- dos it have another name ----it has zinc in it i would like to know what melting temp it melts at and what metals is the alloy made from Please & Thank you:) Quote Link to comment Share on other sites More sharing options...
irnsrgn Posted November 19, 2007 Share Posted November 19, 2007 about 90% zinc, its called pot metal, often refered to as pop metal as it breaks so easy. Quote Link to comment Share on other sites More sharing options...
Joe H Posted November 19, 2007 Share Posted November 19, 2007 I'm not so sure about that... I'm pretty sure they are aluminum, or a magnesium alloy. Zinc "pot metal" wouldn't hold up to the vibrations, or even the bolts being tightened down. Quote Link to comment Share on other sites More sharing options...
welder19 Posted November 19, 2007 Share Posted November 19, 2007 I don't know the percentage but it is definately pot metal which is zinc and al. But there is no standard, different manufactuer's may use different alloys. FYI die cast is not an alloy it is a process, and it is just as it sounds, molten metal (typically pot metal due to it's fluidness) is cast in a die, which is a permanent mold, it is also forced in under psi verses poured in when sand casting. Quote Link to comment Share on other sites More sharing options...
teejay Posted November 20, 2007 Share Posted November 20, 2007 Its called Zrytec (sp) its an aluminiam alloy with zinc and tin.I have it written down somewhere if I find it I'll post the mixture Quote Link to comment Share on other sites More sharing options...
DocsMachine Posted November 20, 2007 Share Posted November 20, 2007 Zinc, aluminum, tin, magnesium, traces of copper, some silicon... It's called "pot metal" basically because they threw whatever thay had into the pot at the time. (The term dates back a century or more.) Today, on new carburetors (which basically means Edelbrock's Carter clones, Holleys and the Demon line) the alloy is much more refined, of course, but it boils down to, again, being predominantly a zinc/tin/aluminum alloy. It's a fairly low melting alloy, about 1200F or less, as I recall, but I'm also told you need to be really careful with it, as overheating it starts the various components boiling and seperating. I wouldn't recommend the alloy for anything other than decorative items- nameplates and such. Do NOT use it for anything more structural than a candleholder. Doc. Quote Link to comment Share on other sites More sharing options...
Dodge Posted November 20, 2007 Share Posted November 20, 2007 I'm not so sure about that... I'm pretty sure they are aluminum, or a magnesium alloy. Zinc "pot metal" wouldn't hold up to the vibrations, or even the bolts being tightened down. The old hood ornaments such as like on the old 55s, 56s, 57 chevys were made of "pot" metal. They stood up to years of hood slamming, vibration, etc. I don't know what carbs are/were made of, (a good part of the old mopar "Thermo-quad" was plastic;)), but pot metal is pretty tough stuff Quote Link to comment Share on other sites More sharing options...
tecnovist Posted November 20, 2007 Author Share Posted November 20, 2007 DocsMachine Hi i was under the impression that they did not use TIN as it causes a corrasion with in the zinc alloy Quote Link to comment Share on other sites More sharing options...
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