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www.cointalk.com/threads/copper-nickel.175899

Ok so I got this strange looking copper nickel in some change today, photos are below. I looked around for an hour on the internet and couldn't find any info on a proof set or anything that this might have come in.

en.wikipedia.org/wiki/Cupronickel

Cupronickel or copper-nickel (CuNi) is an alloy of copper that contains nickel and strengthening elements, such as iron and manganese. The copper contents typically varies from 60 to 90 percent. (Monel metal is a nickel-copper alloy that contains a minimum of 52 percent nickel.) Despite its high copper content, cupronickel is silver in colour.

en.wikipedia.org/wiki/Nickel_(United_States_coin)

A nickel, in American usage, is a five-cent coin struck by the United States Mint. Composed of 75% copper and 25% nickel, the piece has been issued since 1866. Its diameter is .835 inches (21.21 mm) and its thickness is .077 inches (1.95 mm).

www.answers.com/Q/Is_there_nickel_in_copper

Alloy wires of copper and nickel come in many varieties and are sometimes called cupro-nickels. They can be found containing: Copper with 10% nickel Copper with 30% nickel Copper with 25% nickel ...

coins.thefuntimesguide.com/pennies_nickels_silver_coins

In fact, 75% of a typical U.S. 5-cent coin is actually copper! Only 25% of a nickel actually is made of nickel. This has been the case for the U.S. 5-cent coin since 1866, when the first nickel 5-cent coin was made. Believe it or not, there were a few years when the nickel did not contain any nickel at all.

www.911metallurgist.com/blog/where-to-find-copper-nickel-and-cobalt-deposits...

Metallurgical ContentCopperWhere to Find Copper in British ColumbiaWhere to Find Copper in YukonWhere to Find Copper in ManitobaWhere to Find Copper in OntarioWhere to Find Copper in QuebecWhere to Find Copper in New BrunswickWhere to Find Copper in Nova ScotiaNickel and CobaltWhere to Find Nickel and Cobalt in OntarioWhere to Find Nickel in Manitoba Copper Copper ores are found in a great ...

www.answers.com/Q/What_is_the_value_of_a_copper_nickel

If you have a US nickel, it is either coated with copper or has changed color due to exposure to some chemical and has no special value. If it is a 1942 Canadian nickel, it varies from $.40 to $1 ...

www.copper.org/applications/marine/cuni/properties/DKI_booklet.html

The density of copper (8.93 kg/dm 3 at 20 °C) varies only slightly with increasing nickel content (density of nickel at 20 °C = 8.9 kg/dm 3) and is 8.9 kg/dm3 for all Cu-Ni alloys specified in DIN 17 664. This aspect can also be seen in Table 7 with the physical properties of the Cu-Ni resistance alloys to DIN 17 471.

coinsite.com/us-error-coin-values

Zinc cents with copper plating have been minted since the middle of 1982. Sometimes the plating is partially or completely missing, resulting in cents with a silvery looking surface on part or all of the coin.

www.shshihang.com/copper-nickel-pipes

In essence, there are many copper nickel pipe manufacturers in China. Therefore, for you to get the exceptional one, you need to look deeper into other several factors other than just what you see on the surface. In this case, I want to introduce you to Shanghai Shihang Copper Nickel Pipe Fitting Co., Ltd.