Log in or Sign up
Coin Talk
Home
Forums
>
Coin Forums
>
Error Coins
>
2012 cent... reverse lamination and die break error?
>
Reply to Thread
Message:
<p>[QUOTE="Pete Apple, post: 7918333, member: 103982"]There has never been a documented lamination on a copper plated zinc cents. (There has been some peeled plating issues mis-identified as laminations). A lamination is a separation of an alloy along horizontal planes of weakness. The copper plating itself is not an alloy and is only 8 microns thick, anyway.</p><p><br /></p><p>While the Zinc Core is an Alloy, there has never been a documented case where there is a lamination of the zinc core. I suspect this is because the other metals in the alloy are such tiny amounts.</p><p><br /></p><p><b>Zinc ALLOY 190: COMPOSITION (% by Weight) Lead = 0.005 max; Iron = 0.010 max; Cadmium = 0.005 max; Copper = 0.7 to 0.9; Zinc = Balance. </b>[/QUOTE]</p><p><br /></p>
[QUOTE="Pete Apple, post: 7918333, member: 103982"]There has never been a documented lamination on a copper plated zinc cents. (There has been some peeled plating issues mis-identified as laminations). A lamination is a separation of an alloy along horizontal planes of weakness. The copper plating itself is not an alloy and is only 8 microns thick, anyway. While the Zinc Core is an Alloy, there has never been a documented case where there is a lamination of the zinc core. I suspect this is because the other metals in the alloy are such tiny amounts. [B]Zinc ALLOY 190: COMPOSITION (% by Weight) Lead = 0.005 max; Iron = 0.010 max; Cadmium = 0.005 max; Copper = 0.7 to 0.9; Zinc = Balance. [/B][/QUOTE]
Your name or email address:
Do you already have an account?
No, create an account now.
Yes, my password is:
Forgot your password?
Stay logged in
Coin Talk
Home
Forums
>
Coin Forums
>
Error Coins
>
2012 cent... reverse lamination and die break error?
>
Home
Home
Quick Links
Search Forums
Recent Activity
Recent Posts
Forums
Forums
Quick Links
Search Forums
Recent Posts
Competitions
Competitions
Quick Links
Competition Index
Rules, Terms & Conditions
Gallery
Gallery
Quick Links
Search Media
New Media
Showcase
Showcase
Quick Links
Search Items
Most Active Members
New Items
Directory
Directory
Quick Links
Directory Home
New Listings
Members
Members
Quick Links
Notable Members
Current Visitors
Recent Activity
New Profile Posts
Sponsors
Menu
Search
Search titles only
Posted by Member:
Separate names with a comma.
Newer Than:
Search this thread only
Search this forum only
Display results as threads
Useful Searches
Recent Posts
More...