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Brass is an alloy composed of copper and zinc, brass composed of copper and zinc is called ordinary brass, if it is a variety of alloys composed of more than two elements is called special brass. Brass has strong wear resistance, brass is often used in the manufacture of valves, water pipes, air-conditioning inside and outside the machine connecting pipes and radiators.
Brass has good plasticity, can withstand hot and cold processing, but α single-phase brass in forging and other hot processing prone to medium-temperature brittleness, the specific temperature range varies with the amount of Zn, generally between 200 ~ 700 ℃. Therefore, the temperature should be higher than 700℃ during hot processing.
Two-phase brass, in addition to the α-phase with good plasticity in the alloy organization, also appears by the electronic compound CuZn-based β-solid solution. β-phase has high plasticity at high temperatures, while the β′-phase (ordered solid solution) at low temperatures is hard and brittle in nature. Therefore, (α+β) brass should be forged in the hot state. β brass with zinc content greater than 46%~50% can not be pressure machined because of its hard and brittle properties.
Brass is an alloy composed of copper and zinc, brass composed of copper and zinc is called ordinary brass, if it is a variety of alloys composed of more than two elements is called special brass. Brass has strong wear resistance, brass is often used in the manufacture of valves, water pipes, air-conditioning inside and outside the machine connecting pipes and radiators.
Brass has good plasticity, can withstand hot and cold processing, but α single-phase brass in forging and other hot processing prone to medium-temperature brittleness, the specific temperature range varies with the amount of Zn, generally between 200 ~ 700 ℃. Therefore, the temperature should be higher than 700℃ during hot processing.
Two-phase brass, in addition to the α-phase with good plasticity in the alloy organization, also appears by the electronic compound CuZn-based β-solid solution. β-phase has high plasticity at high temperatures, while the β′-phase (ordered solid solution) at low temperatures is hard and brittle in nature. Therefore, (α+β) brass should be forged in the hot state. β brass with zinc content greater than 46%~50% can not be pressure machined because of its hard and brittle properties.