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 Replies: 16 / Views: 1,913 |
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Valued Member
United States
349 Posts |
This penny is magnetic and looks as its steel in color. Any value 1990 d LMC |
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Rest in Peace
10197 Posts |
Probably coated with nickel or chromium, even electroplated...sold as novelties is considered as altered and has value of $.01. At least you won't see the zinc rot!   to the family! |
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Bedrock of the Community
 United States
12477 Posts |
Even if it was nickel-plated it shouldn't be attracted by a normal or even decent strength magnet. I am very skeptical that it is some sort of error, however.
Can you post pics of both sides of the coin and get a weight (at least to the tenth of a gram)?
In Memory of Crazyb0 12-26-1951 to 7-27-2020
In Memory of Tootallious 3-31-1964 to 4-15-2020
In Memory of T-BOP 10-12-1949 to 1-19-2024
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Bedrock of the Community
United States
17884 Posts |
Strongly magnetic or weakly magnetic?
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Moderator
 United States
54283 Posts |
How about a good photo or two?
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Pillar of the Community
Canada
891 Posts |
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Bedrock of the Community
United States
12437 Posts |
Quote:
Even if it was nickel-plated it shouldn't be attracted by a normal or even decent strength magnet Nickel is indeed ferromagnetic. |
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Bedrock of the Community
United States
12477 Posts |
My understanding is that it takes a more substantial amount of nickel to react.
Is that not why a nickel is not attracted or is it because it's an alloy?
In Memory of Crazyb0 12-26-1951 to 7-27-2020
In Memory of Tootallious 3-31-1964 to 4-15-2020
In Memory of T-BOP 10-12-1949 to 1-19-2024
Edited by spru
03/06/2017 4:30 pm
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Bedrock of the Community
United States
62064 Posts |
Alloy. There is 75% copper in a nickel. So it is not attracted to a magnet. So many ways to alter coins, Check Youtube on how to turn the colors.
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Bedrock of the Community
United States
12477 Posts |
My main question is considering a nickel is 25% nickel and non-magnetic, how would nickel plating (presumably less than 25% of the total composition) make a cent magnetic?
Does it being an alloy change the nickel's properties as opposed to a pure nickel surface plating?
In Memory of Crazyb0 12-26-1951 to 7-27-2020
In Memory of Tootallious 3-31-1964 to 4-15-2020
In Memory of T-BOP 10-12-1949 to 1-19-2024
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Rest in Peace
10197 Posts |
Spruett, nickel is slightly magnetic, had same question my self, yes it is. Cant remember where I was sent but it is. When in nickels, the weight of the other metals counters the effect.  I have a 1945 penny that is shiny silver coated, but only slightly magnetic. The same magnet will grab a steelie from 2", this 1961D is not magnetic at all.  Edited by Crazyb0
03/06/2017 9:43 pm
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Bedrock of the Community
United States
12477 Posts |
That helps. I have a pure nickel world coin that is very magnetic but the only silverish-plated cents I have are '43s so they're obviously gonna stick.
So, I guess your '45 is nickel-plated and the '61 is chromium (or silver)? I know chromium is diamagnetic at normal temperatures and paramagnetic at higher temps.
In Memory of Crazyb0 12-26-1951 to 7-27-2020
In Memory of Tootallious 3-31-1964 to 4-15-2020
In Memory of T-BOP 10-12-1949 to 1-19-2024
Edited by spru
03/07/2017 12:58 am
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Bedrock of the Community
United States
12437 Posts |
Quote:
how would nickel plating (presumably less than 25% of the total composition) make a cent magnetic? The plating would be pure nickel so the composition of the coin itself would have no bearing on the magnetic properties of the nickel plating. |
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Bedrock of the Community
United States
17884 Posts |
Pure Nickel is STRONGLY magnetic so a thin layer of pure nickel on a plated coin is enough to allow it to be attracted to a magnet but the attraction will be WEAK. That is because that plating has to carry the weight of the rest of the coin along with it.
When Nickel is alloyed with other metals it loses its magnetic properties when the other metals reach about 11% of the alloy. So a 95% nickel alloy would still be magnetic and a 90% nickel alloy would be weak or non-magnetic. Out circulation coins are only 25% nickel so are clearly non-magnetic.
If you have some Canadian five, ten or twenty five cent pieces from 1969 to 1981 they are pure nickel. Check and see how strongly magnetic they are.
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Bedrock of the Community
United States
62064 Posts |
Good answer Condor101. I made an image so you don't have to re-type that again.  |
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Moderator
United States
54283 Posts |
Should have proof read it first....  OUT |
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Replies: 16 / Views: 1,913 |
Posted 03/06/2017 01:45 am
