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  2. 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.

  3. Metallurgy during the Copper Age in Europe - Wikipedia

    en.wikipedia.org/wiki/Metallurgy_during_the...

    Reconstruction of Ötzi's copper axe (c. 3300 BCE). The Copper Age, also called the Eneolithic or the Chalcolithic Age, has been traditionally understood as a transitional period between the Neolithic and the Bronze Age, in which a gradual introduction of the metal (native copper) took place, while stone was still the main resource utilized.

  4. Mining and metallurgy in medieval Europe - Wikipedia

    en.wikipedia.org/wiki/Mining_and_metallurgy_in...

    This fact, correlated with the dramatic decrease in copper production, may indicate a possible displacement of copper and bronze artifacts by iron ones (Forbes 1957, 64; Bayley et al. 2008, 50). By the end of the 9th century, economic, and social conditions dictated a greater need for metal for agriculture, arms, stirrups, and decoration ...

  5. Ferrous metallurgy - Wikipedia

    en.wikipedia.org/wiki/Ferrous_metallurgy

    Iron and copper working spread southward through the continent, reaching the Cape around AD 200. [ 6 ] [ 7 ] The widespread use of iron revolutionized the Bantu -speaking farming communities who adopted it, driving out and absorbing the rock tool using hunter-gatherer societies they encountered as they expanded to farm wider areas of savanna .

  6. Latten - Wikipedia

    en.wikipedia.org/wiki/Latten

    Historically, the term "latten" referred loosely to the copper alloys such as brass [1] or bronze [2] that appeared in the Middle Ages and through to the late-18th and early-19th centuries. Such alloys were used for monumental brasses , in decorative effects on borders, rivets or other details of metalwork (particularly armour ), in livery and ...

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  8. Oxygen-free copper - Wikipedia

    en.wikipedia.org/wiki/Oxygen-free_copper

    Conductivity is generally specified relative to the 1913 International Annealed Copper Standard of 5.8 × 10 7 S/m. Advances in the refining process now yield OF and ETP copper that can meet or exceed 101% of this standard. (Ultra-pure copper has a conductivity of 5.865 × 10 7 S/m, 102.75% IACS.) Note that OF and ETP coppers have identical ...

  9. Six students overdose on possibly 'tainted' cocaine batch at ...

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    Multiple college students in Colorado were taken to a hospital overnight after overdosing at a fraternity house due to a "possibly tainted batch of cocaine," police said.