The invention discloses a
copper-
nickel-
cobalt-
silicon alloy for a
CPU Socket and a preparation method of the
copper-
nickel-
cobalt-
silicon alloy, and belongs to the technical field of
copper alloy materials. The alloy comprises the following components in percentage by
mass: 2.3-4.6% of Ni, 0.1-0.8% of Co, 0.6-1.3% of Si, one or more elements (with the content of 0.1-0.8%) selected from Zn, Sn, Mg, Mn, Fe, Ti and Cr, and the balance of Cu and inevitable impurities, the ratio of (Ni + Co) to Si is 3-5, and by optimizing the distribution of a precipitated phase (Ni, Co) 2Si and combining a multi-stage rolling and annealing process (including fusion
casting, hot rolling, cold rolling, recrystallization annealing, aging annealing and the like), the alloy can be prepared into the high-strength and high-
toughness alloy. The thickness of the alloy strip ranges from 0.03 mm to 0.4 mm, and the width of the alloy strip is larger than or equal to 580 mm. According to the invention, the material cost is obviously reduced by reducing the use amount of Co, and Co is an expensive strategic resource, so that the
cost performance of the material is improved, the production cost is also reduced, and the
energy consumption and the material cost are obviously reduced.