1988 2 Deutsch Mark Kurt Schumacher

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Dieses Thema wurde im Forum Englisch veröffentlicht

This coin is shown to be “copper nickel clad nickel”, but it sticks to a magnet.

Why?
Because nickel is highly magnetic.
Thema verschoben nach "Numismatic questions" (ZacUK, 9 Sept. 2021, 18:35)
Indeed they are out of Magnimat, 7% by mass pure nickel core with a Cu-Ni layers rolled onto on each side which is enough to make it attracted to a magnet.
Verweis : "Then why don't nickles stick to magnets?"​Because nickel is highly magnetic.
Verweis : "GarySchmitz"
Verweis : "Then why don't nickles stick to magnets?"​Because nickel is highly magnetic.
​​
​Because they are made of copper-nickel (not nickel, as the nickname might suggest)
https://en.numista.com/catalogue/pieces44.html
Just call me Bram

No new swaps for the moment, still too many half-ongoing swaps to clean up!
Verweis : "BramVB"
Verweis : "GarySchmitz So you're saying alloys of nickel aren't magnetic?"

Verweis : "Then why don't nickles stick to magnets?"​Because nickel is highly magnetic.
​​​
​​Because they are made of copper-nickel (not nickel, as the nickname might suggest)
https://en.numista.com/catalogue/pieces44.html
The nickel-copper alloys used for coins is 70% Cu / 30% Ni. It is non-magnetic and as you learned in one of your prior posts has a greyish color.
If it where a homogenous Cu-Ni alloy you would need at least 56 percent nickel before the alloy shows any ferromagnetic properties at ordinary temperatures.

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