| 摘要 |
A brazed structure in which a brazed part is formed on a substrate comprising a discoloration-resistant copper alloy containing 17-37 mass% Zn, 0.30 mass% Pb, and at least one of 0.5 mass% Ni, 0.01-1.6 mass% Al, and 0.01-2.5 mass% Sn, the balance being Cu and unavoidable impurities, wherein the relationships 15 ≤ [Zn] - 0.5 × [Pb] - 1.2 × [Ni] + 2.4 × [Sn] + 1 × [Al] ≤ 32 and 0.7 ≤ 0.3 × [Ni] + 1 × [Sn] + 1.8 × [Al] ≤ 3.8 are satisfied, the metal structure of the brazed part is an α-phase matrix, the total of the proportion occupied by the &bgr; phase and the proportion occupied by the γ phase is 0-1.4% in terms of the area ratio, and the electrical conductivity is 7-25% IACS. |
