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Minting Question

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nod2003's Avatar
United States
3294 Posts
 Posted 12/15/2009  3:19 pm Show Profile   Bookmark this topic Add nod2003 to your friends list Get a Link to this Message Number of Subscribers
I remember reading somewhere (not sure now) that US cents are struck at 3000 psi. However, when we made the steel cents in 1943, they are not extremely mushy strikes, which leads me to think that they upped the pressure on those. Does anyone know what pressure was used to make the steelies?
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SeatedNut's Avatar
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2797 Posts
 Posted 12/16/2009  09:38 am  Show Profile   Bookmark this reply Add SeatedNut to your friends list Get a Link to this Reply
nod2003,

This is from Wiki describing how to I.D. copper-plated 1943 cents:
- Genuine 1943 copper cents will not be attracted to a magnet. Copper-plated steel cents will exhibit a strong magnetic attraction.
- Copper cents weigh 3.11 grams. Steel cents weigh just 2.7 grams.
- The numeral 3 in 1943 has the same long tail as the steel cents. Alterations from later-dated copper cents will be noticeable when compared side-by-side with genuine steel cents.
- The quality of the strike is exceptionally sharp, especially around the rim, because the soft copper planchets were struck with the same (higher) pressure used for the steel cents.

It doesn't say how much more PSI was required for steelies, but your assumption is correct.
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Indian1's Avatar
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3640 Posts
 Posted 12/16/2009  7:01 pm  Show Profile   Bookmark this reply Add Indian1 to your friends list Get a Link to this Reply
With that said, then they must of used the same pressure on the steelies.
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ratman4762's Avatar
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2520 Posts
 Posted 12/16/2009  7:29 pm  Show Profile   Bookmark this reply Add ratman4762 to your friends list Get a Link to this Reply

Quote:
struck with the same (higher) pressure used for the steel cents.

Implies Steelies were struck with higher pressure.
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nod2003's Avatar
United States
3294 Posts
 Posted 12/17/2009  11:54 am  Show Profile   Bookmark this reply Add nod2003 to your friends list Get a Link to this Reply
Right, steel is quite a bit harder then copper, so if they did not increase the pressure, then the steelies would be weak strikes. I was hoping someone had read in a book somewhere how much the pressure was increased, but maybe the mint did not broadcast that info.
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