| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of producing brass for securing the ductility required in a cold working stage such as drawing while repeating the working, and for securing the ductility for securing the final improvement of its strength or impact resistance. SOLUTION: The method of producing brass at least has a stage where brass having an apparent Zn content of 30 to 50 wt.%, and a two phase crystal structure of anαphase and aβphase is prepared, and a stage where the brass is subjected to cold working, and a stage where, after the cold working, the brass is annealed at 100 to 300 deg.C. After the annealing stage, cold working for improving its strength can be added thereto.
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