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  2. Cupronickel - Wikipedia

    en.wikipedia.org/wiki/Cupronickel

    Cupronickel or copper–nickel (CuNi) is an alloy of copper with nickel, usually along with small quantities of other metals added for strength, such as iron and manganese. The copper content typically varies from 60 to 90 percent.

  3. List of copper alloys - Wikipedia

    en.wikipedia.org/wiki/List_of_copper_alloys

    Copper alloys are metal alloys that have copper as their principal component. They have high resistance against corrosion . Of the large number of different types, the best known traditional types are bronze , where tin is a significant addition, and brass , using zinc instead.

  4. Coinage metals - Wikipedia

    en.wikipedia.org/wiki/Coinage_metals

    Cupronickel, a base metal alloy with varying proportions of copper and nickel, was introduced as a cheaper alternative for silver in coinage. Cupronickel, most commonly 75% copper, 25% nickel, has a silver color, is hard wearing and has excellent striking properties, essential for the design of the coin to be pressed accurately and quickly ...

  5. Nickel silver - Wikipedia

    en.wikipedia.org/wiki/Nickel_silver

    Nickel silver, maillechort, German silver, [1] argentan, [1] new silver, [1] nickel brass, [2] albata, [3] or alpacca [4] is a cupronickel (copper with nickel) alloy with the addition of zinc. The usual formulation is 60% copper, 20% nickel and 20% zinc. [5] Nickel silver does not contain the element silver. It is named for its silvery ...

  6. List of foreign countries with coinage struck at the Royal ...

    en.wikipedia.org/wiki/List_of_foreign_countries...

    In 1970, Master of the Mint Gordon Ward Hunter relaunched the Foreign Circulation division. In January 1970, the RCM won a contract from Singapore to produce six million rimmed blanks in a cupronickel alloy. [3]: 148 This was the Mint's first export contract since a contract for the Dominican Republic 32 years earlier. The second contract came ...

  7. Group 11 element - Wikipedia

    en.wikipedia.org/wiki/Group_11_element

    Group 11 is also known as the coinage metals, due to their usage in minting coins [2] —while the rise in metal prices mean that silver and gold are no longer used for circulating currency, remaining in use for bullion, copper remains a common metal in coins to date, either in the form of copper clad coinage or as part of the cupronickel alloy.

  8. Antimicrobial properties of copper - Wikipedia

    en.wikipedia.org/wiki/Antimicrobial_properties...

    Copper alloy surfaces have intrinsic properties that destroy many microorganisms.In the interest of protecting public health, especially in healthcare environments with their susceptible patient populations, an abundance of peer-reviewed antimicrobial efficacy studies have been conducted in the past ten years regarding copper's efficacy to destroy E. coli O157:H7, methicillin-resistant ...

  9. Monel - Wikipedia

    en.wikipedia.org/wiki/Monel

    Monel is a group of alloys of nickel (from 52 to 67%) and copper, with small amounts of iron, manganese, carbon, and silicon. Monel is not a cupronickel alloy because it has less than 60% copper. Stronger than pure nickel, Monel alloys are resistant to corrosion by many aggressive agents, including rapidly flowing seawater. They can be ...

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