Posted: 2/10/2015 4:07:32 PM EDT
| I was given quite a bit of lead / tin a couple of years ago that id like to sell to a recycling center. Is there a way to figure out what I have and are there any reputable recycling centers left in the okc area? |
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Zinc can look a lot like lead, and its also heavy, but not as heavy as lead, and zinc is harder, but some lead alloys can be pretty hard, while pure lead is what they call "dead soft", meaning so soft you can dent it with a fingernail. Zinc also has a fairly low melting point, but I personally don't know a good way to tell zinc from lead. |
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Quoted:
Zinc can look a lot like lead, and its also heavy, but not as heavy as lead, and zinc is harder, but some lead alloys can be pretty hard, while pure lead is what they call "dead soft", meaning so soft you can dent it with a fingernail. Zinc also has a fairly low melting point, but I personally don't know a good way to tell zinc from lead. You feed it to the kids and if they go all Gary Busey, it was lead 
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Quoted:
Zinc can look a lot like lead, and its also heavy, but not as heavy as lead, and zinc is harder, but some lead alloys can be pretty hard, while pure lead is what they call "dead soft", meaning so soft you can dent it with a fingernail. Zinc also has a fairly low melting point, but I personally don't know a good way to tell zinc from lead. Side cutters can tell lead from zinc and steel pretty quick. Posted Via AR15.Com Mobile |
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I did a little Googleing and came up with some answers, most ways of checking concern wheel weights and the methods there won't work with this, but some other things will. Melting points -----Lead (Pb) 327.5 °C, 621.5 °F -----Tin (Sn) 231.9 °C, 449.41998 °F -----Zinc (Zn) 419.58 º C, 787.24396 °F -----Antimony (Sb) 630.74 º C, 1167.332 °F As you can see, lead melts about 150 degrees F lower than zinc, so one method might be to take a piece of known scrap lead and a piece of unknown metal, expose to a flame and see which melts first, lead alloy bullets will melt at a higher temp than pure lead. Another answer: I use a side cutter and nip into the end of each wheel weight before I put it in the pot. The lead can be cut into with the side cutter and go into the pot but the Zinc and steel are HARD and wont cut...they go into the reject bucket. The Zinc and steel also "ring" when struck unlike the lead which just has the dull "thud". Another: The Zn is the easiest way, you can also drop them on the ground. Lead will thud and not bounce, everything else will make a "ting" sound and bounce. |
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I think you're talking about Metal Check. They are supposed to give the best $ per pound, but don't go on the weekend or you'll wait in line. Quoted:
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Metal recycle on SE 59th I think. Its right off I35, You can call and see what they offer. I think you're talking about Metal Check. They are supposed to give the best $ per pound, but don't go on the weekend or you'll wait in line. 
Ya i did. |