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For sale are 13 bars of ultra pure solder bar by Kester. Each contains 63% of tin and 37% of lead. They are very pure and even suitable for solder baths.
Kester Bar Solder, E-Bar, Sn63/Pb37 Alloy, Kester P/N 04-6337-0000, Note: Priced per Pound; Must be ordered in multiples of 25 lbs. (std. pkg. qty.) Designed for electrical, electronic, and mechanical applications requiring bar solder that meets or exceeds the requirements of QQ-S-571-F, ASTM B32, and ANSI/J-STD-006. Kester E-Bar provides for thorough metallic continuity, increased fluidity, and reduced surface tension. All Kester bar solders are made from Grade A virgin metals and manufactured under a controlled process to produce a high purity, uniformly alloyed bar solder. Quality requirements are much stricter than military and ASTM specifications to meet the needs of today's automated electronics soldering operations. Impurities such as copper, cadmium, zinc, aluminum and iron are at a minimum. The manufacturing process also minimizes metallic oxides and virtually eliminates sulfur, non-metallic inclusions, and other possible contaminants.
