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 Replies: 14 / Views: 9,005 |
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Pillar of the Community
Australia
841 Posts |
Hey team, Seen a few posts here and there talking about steel coins so I was wondering if anyone knows if there's enough steel in them for a magnet to work on them. Cheers  |
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Rest in Peace
United States
9104 Posts |
As long as it's not some grades of stainless, a magnet will work.
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Pillar of the Community
1119 Posts |
we have a magnetic coin from the phillipinos I think it is
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Moderator
 Australia
16810 Posts |
Coins that are made of cheap steel or pure iron will stick to a magnet. Most pure nickel coins stick to a magnet too, so "sticks to a magnet" does not necessarily equate to "steel/iron coin".
Many coins these days (such as the new NZ coins) are made from steel that's been plated with something more attractive, like copper or nickel. The steel core in such coins is still plenty to be attracted to a magnet.
I've encountered coins and tokens that are made of nickel-plated brass. The thin layer of magnetic nickel around a non-magnetic core does not noticeably stick to a magnet.
You can also get non-magnetic or "austenitic" steels that do not stick to a magnet. The Australian bimetallic $5 coins are an example of such an alloy used in coinage.
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis
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Pillar of the Community
Australia
877 Posts |
Magnet works well with latest New Zealand and Fiji coins. These are steel core with a very thin facing of nickel or bronze. Made in Royal Canadian Mint which has a patented process that wraps the facing around the edge so the core can't be seen. Unlike many US coins with a copper core and the copper can be seen on the edge. Just as well; otherwise, how long before they start rusting! Jeff |
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Bedrock of the Community
Australia
21786 Posts |
I went through the whole of my world coin collection with a magnet. Concentrated on white metal coins only
Looking for nickel coins, obvoiusly. Pure nickel is magnetic.
The job was to extract stainless steel coins, nickel clad ssteel, and copper nickel clad steel coins. I needed a copy of Krause to do that.
Found about 150. All sorts of countries. A lot of then had been identified and were in labeled 2 x 2's. THEY remained in their 2 x 2's. Lotsa fun!
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Pillar of the Community
 Australia
841 Posts |
Thanks people. I'll have to get one out and see how many I have..could be another interesting post  |
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Pillar of the Community
United Kingdom
1682 Posts |
UK 1 pence and 2 pence coins have been copper plated steel since 1992. In 1998, you can find either the copper plated steel version or the bronze version in circulation. The 5 pence and 10 coins are switching over to plated steel. We suspect this happened in 2011 but since no 5 pence or 10 pence coins have been released for circulation, we don't know for sure but the ones in the sets from The Royal Mint are plated steel since 2011. |
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Pillar of the Community
Australia
4411 Posts |
I decided to run a magnet over my noodled world coins and found a few. I had never thought to do this before, pretty cool. I imagine is could be a useful sorting method for some coin types.  |
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Pillar of the Community
Australia
841 Posts |
Ditto enworb and this is what I found. Sorry about the double pic but I couldn't decide what crappy one to put up. The oldest steel coin I have is canadian 5 cent 1968. It's funny how some places didn't do the higher denominations like others did. Be interesting to see what ours turn out like if and when we change and if they do the higher denominations..it's better for the  one's when you think about it    |
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Pillar of the Community
Australia
841 Posts |
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Pillar of the Community
Australia
4411 Posts |
Great idea ausjack imagine the look on peoples faces |
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Bedrock of the Community
Australia
21786 Posts |
I was after pure nickel coins only. Looking at white metal coins only, to identify the pure nickel coins from those.
A magnet will only identify magnetic coins, but you need catalogue assistance to pick the difference between a white metal / alloy clad, iron / steel coin cored coin, from a pure nickel one.
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Bedrock of the Community
Australia
21786 Posts |
A poor man's metal detector: A wheel barrow of old car batteries all connected up to a home made electromagnetic coil dragged on your son's billycart behind. Would be a 2 man operation.  |
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Pillar of the Community
Australia
841 Posts |
sel_69l Posted - Today :52 Min ago -------------------------------------------------------------------------------- A poor man's metal detector: A wheel barrow of old car batteries all connected up to a home made electromagnetic coil dragged on your son's billycart behind. Would be a 2 man operation.  what have you got on tomorrow sel and stop trying to pinch my ideas or else  |
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Replies: 14 / Views: 9,005 |
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Posted 01/08/2012 11:33 pm
I wonder if I should patent my ideas now so I don't have to 
