Copper-zinc alloy product and process for producing copper-zinc alloy product
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United States of America Patent
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May 5, 2015
Grant Date -
May 2, 2013
app pub date -
Jul 5, 2010
filing date -
Jul 5, 2010
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Abstract
A copper-zinc alloy product of the invention contains zinc in an amount of higher than 35% by weight and 43% by weight or less and has a two-phase structure of an α-phase and a β-phase. Further, the ratio of the β-phase in the copper-zinc alloy is controlled to be higher than 10% and less than 40% and the crystal grains of the α-phase and the β-phase are crushed into a flat shape and arranged in a layer shape through cold working. According to the copper-zinc alloy product, it is possible to decrease the copper content and to appropriately secure the strength and cold workability by appropriately controlling the ratio of the β-phase.
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