Alpha Bar SACX Plus 0307 HASL is a lead-free alloy suitable for use as a replacement for Sn63 alloy in the hot air solder level process. The SACX0300 HASL variant is used to stabilize / reduce the copper content in the hot air solder level machine 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 copper dissolution rates and improve the pad cosmetics.