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Chemical composition:
Copper + silver CuAg: 99.90 or higher
Tin Sn: 0.002 or less
Zinc and zinc: 0.005 or less
Lead Pb: 0.005 or less
Lead Pb: 0.005 or less
Ni Ni: 0.005 or less
Iron Fe: 0.005 or less
Beryllium Sb: 0.002 or less
S: sulfur 0.005 or less
Arsenic As: 0.002 or less
Bi Bi: 0.001 or less
Oxygen O: 0.06 or less
Note: 0.1 or less (impurities)
Low mechanical properties:
Tensile strength of sigma b (MPa) : p. 205
Elongation delta (%) : 25 or more
Note: the wire tensile mechanical properties at room temperature
Sample size: diameter > 1.0 ~ 2.5
Low heat treatment specification: hot working temperature of 900 ~ 1050 ℃.Annealing temperature is 500 ~ 700 ℃;Cold work hardening copper recrystallization beginning temperature of 200 ~ 300 ℃.

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