Kester 24-6337-0657 SN63PB37 66 Core OR-421 Flux Solder Wire .031 Dia

Kester 24-6337-0657 is a 1 lb spool of leaded, organic cored wire solder that is .031 inches in diameter. It is comprised of SN63PB37, 63 percent tin and 37 percent lead. Additionally, it has a 66 core size and an OR-421 organic flux type.OR421 Organic Cored Wire Solder is for lead-bearing and lead-free alloys.Kester )R421 is a high activity, water soluble, cored wire flux. The OR421 is more heat stable, exhibits better wetting capabilities and has less odor than competitive products. The residues left by OR421 are near neutral pH and therefore also less corrosive. The OR421 is classified as ORH1 per J-STD-004.Kester )R421 cored wire solder can be utilized with an open torch or a soldering iron. OR421 will solder copper as well as more difficult to solder materials such as brass and nickel. OR421 can be used on pipes or tubing for applications such as refrigeration coils and heat exchangers. The heat stability of Kester OR421 makes it ideal for high temperature alloys such as 95Sn/5Sb, 10Sn88Pb2Ag and 10 Sn90Pb.Performance Characteristics:Highest activity availableCompatible with hgih temperature alloysEasy to cleanClassified as ORH1 per J-STD-004