| 摘要 |
PROBLEM TO BE SOLVED: To provide a saw wire which has satisfactory wear resistance, allows quality of a cut out wafer to be kept satisfactory and furthermore has little risk of wire breaking in use.SOLUTION: In a saw wire 1, brass plating 3 is applied to a surface of a saw wire body 2. The saw wire body 2 has a wire diameter of 0.04 to 0.14 mm and has a Martens hardness of 6,500 N/mmor more in a position at a depth of 8% of a radius from the surface. If a Martens hardness in a position at a depth of 8% of a radius from the surface is 6,500 N/mmor more, a wear amount of the saw wire body 2 is not increased as compared with a conventional one. Further, if a diameter of the saw wire body 2 is in a range of 0.04 to 0.14 mm, wire breaking of the saw wire body 2 is not generated upon cutting of an ingot and a thickness of a wafer cut out from the ingot using the saw wire body 2 becomes uniform. |
