| 摘要 |
PURPOSE:To obtain a material for lead having excellent oxidation resistant property by covering a core material of Cu or an alloy including Cu with a Cu alloy including the specified amount of Mn, Zn, Ni, Al or moreover selectively including specified amount of Fe, Co or Sn. CONSTITUTION:A core material is made of a copper alloy including pure copper, phosphor bronze, Ag, Cr, Al etc. A clad material should be Cu alloy including Mn in 7-15wt% which suppresses oxide film and prevent deterioration in solubility of alloy and cold processing characteristic; Zn in 10-30wt% which also suppresses formation oxide film in combination with Mn, increases strength and prevent deterioration of ductility; Ni in 0.2-10wt% which prevents deterioration of ductility and improve strength of clad and heat resistivity; Al in 0.1-3wt% which also provide the same effect as Ni; and a kind or two kinds of Fe, Co, Sn in 0.2-0.3wt% which is added as required in order to further strengthen the strength of clad. The Cu alloy clad material for lead material having such structure excels in conductivity, heat radiation characteristic and oxidation resistivity. |
