25 micron nickel plated coins.

[ZenOps]

http://www.royalmint.com/aboutus/news/g ... -reduction

Looks to be the way that coinage from the Royal mint will be produced.

"The Royal Mint’s license free aRMour® plating technology which replaces expensive solid alloy coins with a mild steel core electroplated with either nickel, brass or copper. This single layer or mono plate of typically 25 microns allows for a lifetime in circulation in excess of 20 years. In contrast, multi-layer plating has a thin outer layer of only 6 to 9 microns that can wear through in as little as five years in circulation, exposing the underlying copper layer."

So by my estimation, a 5.5% nickel plating might become standard (2% might be too thin) for the fifty countries in the commonwealth.

[henrysmedford]

I think will use EMSecure™ http://www.jardenzinc.com/Coins-EMSecure.aspx as that Jarden makes penny blanks for the US and with is type all coin-op machine will the they are getting the same coins as the older ones.

Both plated and un-plated EMSecure™ coin blanks/planchets match the electro-magnetic signature (EMS) of cupronickel with exceptional performance at a substantially lower cost than other alloys offering a matching EMS to cupronickel.

Typical cupronickel contains 75% copper and 25% nickel. Our base material contains less copper, and virtually no nickel.

This coin can be used as a direct substitute for the EMS and look of existing coins, or as a new modified signal (within the typical range for similar solid alloys). The plated finished color can be modified to suit the customer's needs. Un-plated, the alloy has a whitish gold color.

Patent Pending
Multiple source availability

Benefits of EMSecure™:

Cost effective alternative to cupronickel
Security Match or New EMS
Excellent Coinability
Corrosion Resistant
Color Match