| 摘要 |
PROBLEM TO BE SOLVED: To provide a Cu-Mg alloy body having efficient strength and capable of sufficiently suppressing generation of crack on a surface of the obtained drawn wire material when wire drawing is conducted, and to provide a manufacturing method of the Cu-Mg alloy body and a drawn wire material manufactured by wire drawing of the Cu-Mg alloy body.SOLUTION: A Cu-Mg alloy body contains Cu-Mg alloy, and has the Mg content of 0.3 to 1.0 mass% in the Cu-Mg alloy body and a first segregation Mg occupancy, which is a percentage of the area of a Mg segregation product occupying the area of a surface layer part from a surface to a depth of 30 μm in a cross section of the Cu-Mg alloy body, of 3.0 area% or less. |
