| 摘要 |
PROBLEM TO BE SOLVED: To provide a copper tube for a heat exchanger having excellent workability, which can be, e.g., cold-worked into the heat transfer tube of a heat exchanger even when being thinned and increased in strength, and a method for producing the same. SOLUTION: Theβfiber orientation grains particularly in a rolled texture in the texture of a P based copper tube or an Sn-P based copper tube having a specified composition are suppressed by devising production conditions such as process annealing to increase a ratio between fracture strength and tensile strength, thus, even when its wall thickness is thinned, the balance between the fracture strength and bending workability of the steel tube is improved. COPYRIGHT: (C)2011,JPO&INPIT |
