• Oyaide Koyanagide Electric High Purity 4N (99.993% or more) Tin AdoptedWe pursued a high-purity tin with a long-awaited sound-only alloy solder of 99.993% (4N) or more. Contains silver and copper for the purpose of improving conductivity and preventing solder from being eaten. Moreover, in the case of normal alloy solder, the ratio of silver is 3 to 3.5%, but the amount of material of 4.7% is generously introduced. In addition, 1.7% of the metal contains copper with high conductivity following silver. The conductivity is dramatically improved by this blending ratio, and it succeeded in setting the eutectic point 217 degrees. The spread rate of 83% is a numerical value that shows overwhelming workability. If there is a solder of 40W, the solder penetrates in a few seconds and the work is finished. In addition, it cools quickly at the eutectic point 217 degrees, and the work is finished without damaging the surrounding material by heat.　You will be surprised at its overwhelming workability and beauty of the finish. / Sage-like mulch material: high purity 4N (99.993% or more) tin: 90.3% / pure silver: 4.7% / pure copper: 1.7% / flux: 3.3% flux: chlorine content 0.12% or less, scattering small, no-cleaning type wire diameter: 1.0mm dissolution temperature: 217 degrees (co-crystal) Other: Pb-free, RoHS compatible /

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