Sn96.5Ag3Cu0.5 and Sn95.5Ag4Cu0.5 and their replenishment alloys Sn97Ag3Cu0, Sn96.5Ag3.5Cu0 and Sn96Ag4Cu0 are leadfree alloys suitable for use as a replacement for Sn63 alloy. The replenishment alloys are sometimes used to stabilize / reduce the copper content in the wave solder bath, this requirement will depend on process conditions. As with all Alpha Metals bar solder, Alpha€™s proprietary Vaculoy® alloying process is used to remove certain impurities, particularly oxides. The proprietary Vaculoy process is a highly effective method for removing included oxides from solder. This is extremely important because included oxides generate excessive drossing and increase the viscosity of the solder. Solder with higher viscosity can result in increased soldering defects (i.e solder bridging)
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