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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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#1
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Is this metal zinc?
Okay so, I ordered about 2 pounds of zinc off of ebay from a good seller.
At first I suspected it wasn't zinc because it was really soft. Zinc is a soft metal but is it that soft? I asked the seller and he insisted greatly that it was melted from zinc wheel weights, however, I think otherwise because of this reasons. I experimented on the metal. I suspected lead because it leaves a residue on my bare hands after handling and because it's a tiny bit harder than lead, I also did the sound test by dropping the ingot, it did not make a blunt sound but more of a "ding". So I ruled out lead. Next, I got some zinc from a melted penny. Since I heard zinc reacts with acid to produce hydrogen, I took some metal form the ingot and the zinc from the penny and placed it in vinegar. After 1 hour, the zinc from the penny was producing hydrogen and turning into a black powder while the other did nothing at all. After a few days The zinc was totally dissolved and the other metal was still perfectly fine. Next I did a hardness test, I could not easly dent or scratch the zinc from the penny but I was able to dent the other metal easily. it's harder than lead but softer than zinc. The metal is a shiny gray color. Does anyone here know what it could be? (I haven't tried to melt it because I don't want to create toxic fumes if it is something other than zinc.) -- posted from http://www.polytechforum.com/metalwo...nc-615512-.htm using PolytechForum's Web, RSS and Social Media Interface to rec.crafts.metalworking and other engineering groups |
#2
Posted to rec.crafts.metalworking
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Is this metal zinc?
On 08-Jun-15 12:18 PM, JoshAGS wrote:
Okay so, I ordered about 2 pounds of zinc off of ebay from a good seller. At first I suspected it wasn't zinc because it was really soft. Zinc is a soft metal but is it that soft? I asked the seller and he insisted greatly that it was melted from zinc wheel weights, however, I think otherwise because of this reasons. I experimented on the metal. I suspected lead because it leaves a residue on my bare hands after handling and because it's a tiny bit harder than lead, I also did the sound test by dropping the ingot, it did not make a blunt sound but more of a "ding". So I ruled out lead. Next, I got some zinc from a melted penny. Since I heard zinc reacts with acid to produce hydrogen, I took some metal form the ingot and the zinc from the penny and placed it in vinegar. After 1 hour, the zinc from the penny was producing hydrogen and turning into a black powder while the other did nothing at all. After a few days The zinc was totally dissolved and the other metal was still perfectly fine. Next I did a hardness test, I could not easly dent or scratch the zinc from the penny but I was able to dent the other metal easily. it's harder than lead but softer than zinc. The metal is a shiny gray color. Does anyone here know what it could be? (I haven't tried to melt it because I don't want to create toxic fumes if it is something other than zinc.) Do some googling to see what wheel weigh alloys are composed of. Do a rough density check - stick your ingot in a jug & work out its volume (or measure?) weigh it down the post office. That might give you an idea if is close to the density of Zn. The bullet makers here will know what its made from. |
#3
Posted to rec.crafts.metalworking
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Is this metal zinc?
On Mon, 08 Jun 2015 04:18:02 +0000, JoshAGS
wrote: Okay so, I ordered about 2 pounds of zinc off of ebay from a good seller. At first I suspected it wasn't zinc because it was really soft. Zinc is a soft metal but is it that soft? I asked the seller and he insisted greatly that it was melted from zinc wheel weights, however, I think otherwise because of this reasons. I experimented on the metal. I suspected lead because it leaves a residue on my bare hands after handling and because it's a tiny bit harder than lead, I also did the sound test by dropping the ingot, it did not make a blunt sound but more of a "ding". So I ruled out lead. Next, I got some zinc from a melted penny. Since I heard zinc reacts with acid to produce hydrogen, I took some metal form the ingot and the zinc from the penny and placed it in vinegar. After 1 hour, the zinc from the penny was producing hydrogen and turning into a black powder while the other did nothing at all. After a few days The zinc was totally dissolved and the other metal was still perfectly fine. Next I did a hardness test, I could not easly dent or scratch the zinc from the penny but I was able to dent the other metal easily. it's harder than lead but softer than zinc. The metal is a shiny gray color. Does anyone here know what it could be? (I haven't tried to melt it because I don't want to create toxic fumes if it is something other than zinc.) Zinc Wheelweights? While there are some out there...the majority of them will be lead. Nearly a #2 alloy of lead and tin. They will indeed Ding! when dropped on a piece of steel plate. Sounds like you got 2 lbs of lead wheel weights. Need zinc? http://www.amazon.com/Roto-Metals-Zi.../dp/B001QUXB04 http://www.metalshipper.com/zinc.html http://www.ebay.com/itm/Zinc-Powder-...-/201367141189 http://www.ebay.com/itm/BULLION-2-LB...-/331576127160 http://www.ebay.com/itm/Zinc-ingots-...-/291478443168 etc etc etc Testing for zinc https://www.youtube.com/watch?v=_jPEr05O0mM http://webmineral.com/help/FlameTest.shtml#.VXUs89JViko etc etc |
#4
Posted to rec.crafts.metalworking
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Is this metal zinc?
"JoshAGS" wrote in
message oups.com... Okay so, I ordered about 2 pounds of zinc off of ebay from a good seller. At first I suspected it wasn't zinc because it was really soft. Zinc is a soft metal but is it that soft? I asked the seller and he insisted greatly that it was melted from zinc wheel weights, however, I think otherwise because of this reasons. I experimented on the metal. I suspected lead because it leaves a residue on my bare hands after handling and because it's a tiny bit harder than lead, I also did the sound test by dropping the ingot, it did not make a blunt sound but more of a "ding". So I ruled out lead. Next, I got some zinc from a melted penny. Since I heard zinc reacts with acid to produce hydrogen, I took some metal form the ingot and the zinc from the penny and placed it in vinegar. After 1 hour, the zinc from the penny was producing hydrogen and turning into a black powder while the other did nothing at all. After a few days The zinc was totally dissolved and the other metal was still perfectly fine. Next I did a hardness test, I could not easly dent or scratch the zinc from the penny but I was able to dent the other metal easily. it's harder than lead but softer than zinc. The metal is a shiny gray color. Does anyone here know what it could be? (I haven't tried to melt it because I don't want to create toxic fumes if it is something other than zinc.) Weigh it suspended in and out of water. The difference in grams is its volume in milliliters. Zinc's density is around 7 grams per milliliter. http://www.themeter.net/pesi-spec_e.htm If you need standard weights for a home-brew balance, US nickels weigh very close to 5 grams. -jsw |
#5
Posted to rec.crafts.metalworking
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Is this metal zinc?
replying to just_me , JoshAGS wrote:
justme wrote: Do some googling to see what wheel weigh alloys are composed of. Do a rough density check - stick your ingot in a jug & work out its volume (or measure?) weigh it down the post office. That might give you an idea if is close to the density of Zn. The bullet makers here will know what its made from. The biggest ingot weighs 14 ounces and other zinc ingots of the EXACT same size weigh 10 ounces. -- posted from http://www.polytechforum.com/metalwo...nc-615512-.htm using PolytechForum's Web, RSS and Social Media Interface to rec.crafts.metalworking and other engineering groups |
#6
Posted to rec.crafts.metalworking
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Is this metal zinc?
does it write on paper like pencil
On 2015-06-08, JoshAGS wrote: replying to just_me , JoshAGS wrote: justme wrote: Do some googling to see what wheel weigh alloys are composed of. Do a rough density check - stick your ingot in a jug & work out its volume (or measure?) weigh it down the post office. That might give you an idea if is close to the density of Zn. The bullet makers here will know what its made from. The biggest ingot weighs 14 ounces and other zinc ingots of the EXACT same size weigh 10 ounces. |
#7
Posted to rec.crafts.metalworking
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Is this metal zinc?
JoshAGS wrote:
Okay so, I ordered about 2 pounds of zinc off of ebay from a good seller. At first I suspected it wasn't zinc because it was really soft. Zinc is a soft metal but is it that soft? I asked the seller and he insisted greatly that it was melted from zinc wheel weights, however, I think otherwise because of this reasons. I experimented on the metal. I suspected lead because it leaves a residue on my bare hands after handling and because it's a tiny bit harder than lead, I also did the sound test by dropping the ingot, it did not make a blunt sound but more of a "ding". So I ruled out lead. Next, I got some zinc from a melted penny. Since I heard zinc reacts with acid to produce hydrogen, I took some metal form the ingot and the zinc from the penny and placed it in vinegar. After 1 hour, the zinc from the penny was producing hydrogen and turning into a black powder while the other did nothing at all. After a few days The zinc was totally dissolved and the other metal was still perfectly fine. Next I did a hardness test, I could not easly dent or scratch the zinc from the penny but I was able to dent the other metal easily. it's harder than lead but softer than zinc. The metal is a shiny gray color. Does anyone here know what it could be? (I haven't tried to melt it because I don't want to create toxic fumes if it is something other than zinc.) More than likely it's a lead alloy. While there are zinc wheel weights they are not in popular use, lead and steel are the common ones, As for the (I haven't tried to melt it because I don't want to create toxic fumes if it is something other than zinc.) Melting zinc CREATES VERY TOXIC fumes. Ask anyone about welding and working with galvanized metals. -- Steve W. |
#8
Posted to rec.crafts.metalworking
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Is this metal zinc?
On Mon, 08 Jun 2015 14:42:11 -0400, "Steve W."
wrote: JoshAGS wrote: Okay so, I ordered about 2 pounds of zinc off of ebay from a good seller. At first I suspected it wasn't zinc because it was really soft. Zinc is a soft metal but is it that soft? I asked the seller and he insisted greatly that it was melted from zinc wheel weights, however, I think otherwise because of this reasons. I experimented on the metal. I suspected lead because it leaves a residue on my bare hands after handling and because it's a tiny bit harder than lead, I also did the sound test by dropping the ingot, it did not make a blunt sound but more of a "ding". So I ruled out lead. Next, I got some zinc from a melted penny. Since I heard zinc reacts with acid to produce hydrogen, I took some metal form the ingot and the zinc from the penny and placed it in vinegar. After 1 hour, the zinc from the penny was producing hydrogen and turning into a black powder while the other did nothing at all. After a few days The zinc was totally dissolved and the other metal was still perfectly fine. Next I did a hardness test, I could not easly dent or scratch the zinc from the penny but I was able to dent the other metal easily. it's harder than lead but softer than zinc. The metal is a shiny gray color. Does anyone here know what it could be? (I haven't tried to melt it because I don't want to create toxic fumes if it is something other than zinc.) More than likely it's a lead alloy. While there are zinc wheel weights they are not in popular use, lead and steel are the common ones, As for the (I haven't tried to melt it because I don't want to create toxic fumes if it is something other than zinc.) Melting zinc CREATES VERY TOXIC fumes. Ask anyone about welding and working with galvanized metals. Melting zinc doesn't cause fumes until it gets very hot. When you see white smoke coming off it is too hot. Breathing the fumes will make you sick if you breathe enough but is unlikely to kill you. Eric |
#9
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Is this metal zinc?
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#11
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Is this metal zinc?
replying to Ignoramus7853 , JoshAGS wrote:
ignoramus7853 wrote: does it write on paper like pencil I just tested that and it does write on paper. Does this mean it contains lead? -- posted from http://www.polytechforum.com/metalwo...nc-615512-.htm using PolytechForum's Web, RSS and Social Media Interface to rec.crafts.metalworking and other engineering groups |
#12
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I suspected lead
because it leaves a residue on my bare hands after handling and because it's a tiny bit harder than lead, I also did the sound test by dropping the ingot, it did not make a blunt sound but more of a "ding". cheap metal buildings |
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