COPPER ALLOY TUBE FOR HEAT EXCHANGER EXCELLENT IN BENDABILITY

摘要

<P>PROBLEM TO BE SOLVED: To provide a copper alloy tube for heat exchanger which can be used even when the tube is made thin in thickness with respect to the high operating pressure for using a new coolant such as carbon dioxide and HFC-based chlorofluocarbon. Ž<P>SOLUTION: The copper alloy tubei includes specific composition containing Sn and P and also, and includes a structure having fine grain diameter and substantially no huge crystal grain. Even when the tube is made thin into ≤0.5 mm, a bending diameter can be more reduced, so that a bending-working can be applied to the heat-conductive tube for heat exchanger usingo the HFC-based chlorofluorocarbon, the carbon dioxide or the like as the coolant. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž