Copper than less-developed countries (30–40 kg per capita). The process of recycling copper is roughly the same as is used to extract copper but requires fewer steps. High-purity scrap copper is melted in a furnace and then reduced and cast into billets and ingots; lower-purity scrap is refined by electroplating in a bath of sulfuric acid. Numerous copper alloys have been formulated, many with important uses. Brass is an alloy of copper and zinc. Bronze usually refers to copper-tin alloys, but can refer to any alloy of copper such as aluminium bronze. Copper is one of the most important constituents of
Nickel Babbitt Babbitts high in tin content, consist of a relatively soft, solid matrix of tin in which are distributed hard copper-tin and tin-antimony cuboids. Babbits are often employed as a thin surface coating to obtain the advantage of their good rubbing characteristics. Nickel Babbitt Babbitt refers to a bearing alloy consisting typically of tin, lead, antimony, and copper. "XXXX Nickel" is a trade name for such an alloy that also contains a small percentage of nickel. Isaac Babbitt was issued the first patent for an alloy that was excellent for making bearings. The word Babbitt has been applied to many alloys