| 摘要 |
PURPOSE:To obtain a material for electrically conductive parts of electronic and electrical appliances consisting of prescribed percentages of Mn and Mg and the balance Al with inevitable impurities and having satisfactory softening resistance, electrical conductivity, heat conductivity, solderability, platability and high mechanical strength. CONSTITUTION:A material of this invention for electrically conductive parts consists of 0.3-4.0wt% Mn, 0.10-5.0wt% Mg and the balance Al with inevitable impurities. Mn is required to obtain strength and resistance to repeated bending and softening necessary for parts such as a lead frame. Mg is an element effective in improving the strength and is added together with Mn so as to provide sufficient strength and resistance to repeated bending to parts such as a lead frame. Since the material is an Al alloy, it is much less expensive than conventional 42 alloy, 'KOVAR(R)' or Cu-base materials. |
