Cu-Zn ALLOY STRIP WITH EXCELLENT RESISTANCE TO THERMAL PEELING OF Sn PLATING, AND Sn-PLATED STRIP THEREOF

摘要

PPROBLEM TO BE SOLVED: To provide a Cu-Zn alloy strip having improved resistance to thermal peeling of Sn plating and also to provide an Sn plated strip of the Cu-Zn alloy strip. PSOLUTION: The Cu-Zn alloy strip has a composition consisting of 15 to 40 mass% Zn and the balance Cu with inevitable impurities. The Cu-Zn alloy strip is characterized in that: the sum total of concentrations of P, As, Sb and Bi is controlled to 100 ppm by mass; the sum total of concentrations of Ca and Mg is controlled to 100 ppm by mass; and concentrations of O and S are controlled to 30 ppm by mass, respectively. PCOPYRIGHT: (C)2008,JPO&INPIT