Coneca Errorscope: Why Are Copper Plated Zinc Cents Resistant To Lamination

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Author	Replies: 6 / Views: 1,516
Pete2226 Pillar of the Community United States 3330 Posts	Posted 09/04/2019 09:11 am CONECA has given me permission to post this article. I see no way to post a .pdf, so I am using a .jpg format. Report this Post to the Staff

Conder101 Bedrock of the Community United States 17884 Posts	Posted 09/04/2019 2:14 pm The section where it mentions the ability to hold the melt at a specific temperature and not having to stir the melt is probably the most important part. Most laminations are probably the result of trapped gases or foreign contaminantes in the ingot. Being able to give the melt time for the gas and contaminates to separate results in much fewer laminations. This also explains why we see much fewer laminations in ALL modern coins that in older coins even of the same composition. If we were still making bronze or brass cents though, we would probably still have trouble with laminations on those. Brass and bronze can't be held at its high melt temperature for very long because it is considerably higher than the boiling point of the zinc or tin, so they would be constantly boiling off out of the melt. The longer you hold the melt at temperature the lower the zinc and tin percentage becomes. Report this Post to the Staff
Pete2226 Pillar of the Community United States 3330 Posts	Posted 09/04/2019 2:28 pm Thank you Conder 101! Report this Post to the Staff
Daves Errors Pillar of the Community United States 1566 Posts	Posted 09/04/2019 4:21 pm Sorry Pete Apple, But Ya been DEBUNKED. P.S. I have 6 more with lam. errors. Edited by Daves Errors 09/04/2019 4:40 pm Report this Post to the Staff
Pete2226 Pillar of the Community United States 3330 Posts	Posted 09/04/2019 4:58 pm Point 1: I do not claim laminations are impossible on copper plated zinc cents, only that they are resistant. Point 2: While the appearance of your coin is similar to lamination on copper cents, it does not appear to go deeper than the plating, so I think it is a plating issue such as peeling and not a lamination Report this Post to the Staff
Daves Errors Pillar of the Community United States 1566 Posts	Posted 09/04/2019 5:28 pm The definition of resistant is >> The ability not to be affected by something, My 2006 D Zinc LMC is definitely affected by a lamination error as to are the other 6 I have. So you say Tomato I say Tomahto... Edited by Daves Errors 09/04/2019 5:32 pm Report this Post to the Staff
Pete2226 Pillar of the Community United States 3330 Posts	Posted 09/04/2019 7:34 pm Dave's errors - my position is that your coin is a plating issue and not a lamination at least in the sense the word is applied to copper cents. I will certainly reconsider if Mike Diamond attributes your coin as a lamination. The Report this Post to the Staff
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