Patent ID: 7608157

Claim:
A heat resistance copper alloy material characterized in that said copper alloy material comprises: 0.15 to 0.33 mass percent of Co; 0.041 to 0.089 mass percent of P; 0.02 to 0.25 mass percent of Sn; 0.01 to 0.40 mass percent of Zn; and the remaining mass percent of Cu and inevitable impurities, wherein each content of Co, P, Sn and Zn satisfies the relationships 2.4≦([Co]−0.02)/[P]≦5.2 and 0.20≦[Co]+0.5[P]+0.9[Sn]+0.1[Zn]≦0.54, wherein [Co], [P], [Sn] and [Zn] are said mass percents of Go, P, Sn and Zn content, respectively; and said copper alloy material is a pipe, plate, bar, wire or worked material obtained by working said pipe, plate, bar or wire material into predetermined shapes.