Kester 04-6337-0050 is Solid Ultrapure Bar Solder. This solder is comprised of SN63PB37 or, 63 percent tin and 37 percent lead. This item is sold per 25 lb box (containing 15 bars).
It is manufactured by a special process that controls the inclusions of oxides and metallic and non-metallic impurities, Kester Ultrapure is the industry standard bar solder for use high tech electronic applications where lower surface tension and hole filing ability are essential. The purity of Kester Ultrapure for exceeds the requirements of ASTM B32, and IPC - J-STD-006A. Kester SN63PB37 is manufactured by virgin metals, not recycled.
Product Description: For soldering applications which require maximum reliability of solder joints, especially for surface mounted components, only solder of the highest purity is acceptable. Kester does not make any vague claims of outstanding solder purity. Complete analysis of Kester Ultrapure Bar Solders prove that every batch conforms to the strictest quality control standards in the solder industry.
For individual bar price less than standard package of 25 lbs., please see Kester SN63PB37 BAR (04-6337-0050 BAR).