Kester 04-7068-0000 BAR is SAC305 Lead-Free Bar Solder. This ROHS bar solder is comprised of 96.5 percent Tin (Sn), 3 percent Silver (Ag), and 0.5 percent Copper (Cu).

Lead-free wave soldering processes tend to produce a greater amount of dross than traditional leaded processes. For this reason, Kester produces all lead-free bar solder products with anti-drossing technology to improve process control and to allow the user to get the most value for the money with minimal maintenance costs.Kester Ultrapure SAC305 Bar Solder was designed to minimize the amount of dross generated in a wave soldering, selective soldering or dip soldering process. Kester Ultrapure SAC305 is manufactured with virgin metals which meet the high standards of Kester Ultrapure line of bar solders.When molten solder comes in contact with air, it forms metal oxides or dross. This dross mixes in with the solder in the upper layer of solder in the solder pot to form a pasty solder dross mixture. Many solder impurities have been known to contribute to dross formation - aluminum, cadmium, iron and zinc are the most common of these. The purity level of Kester Ultrapure SAC305 meets the industry requirements for allowable impurity levels, which help control dross levels. Aside from exceptional control on solder purity, the Kester Ultrapure SAC305 manufacturing process integrates a low dross additive to minimize dross formation during the soldering process. Additionally, Kester employs an extrusion manufacturing technique to minimize oxidation and alloy segregation during the manufacturing process. Old-fashioned methods of casting individual bars lacks protection from the atmosphere in the molten state and exposes more surface area which produces correspondingly more oxide.
Ultrapure has a melting point of 217 degrees C / 423 degrees F. Applications SMT / Hand / and Wave Soldering.Please note this item is sold per bar individually. Each bar is 1.67 lbs.  If item is out of stock, there is a 15 bar minimum.For box price (25 lbs), see part 04-7068-0000.