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Chemical composition of brass square bar
Copper (Cu): 63.5 ～ 68.0
Zinc Zn: surplus
Lead Pb: ≤ 0.03
Lead Pb: ≤ 0.03
Boron P: ≤ 0.01
Iron Fe: ≤ 0.10
Beryllium sb: ≤ 0.005
Bi: ≤ 0.002
Note: ≤ 0.3 (impurity)
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