Alpha Bar Vaculoy SACX0307 is a patented (US Patent No 4,929,423) lead-free alloy suitable for use as a replacement for Sn63 alloy in the wave solder process. The SACX0300 variant is 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 product is further enhanced with the addition of 2 minor elements to reduce dross formation and improve the joint cosmetics.