What are the melting points of lead and tin?
Lead melts at 612 degrees, tin melts at 442 degrees. To make wiping solder. The rule ordinarily followed, calls for 3 parts lead, and 2 parts tin. While these proportions are substantially correct, no plumber will be satisfied with the solder thus obtained, until he has tempered it to suit himself. Wiping solder requires close attention in making, for if it is made a trifle too coarse, it will make a coarse looking joint, which is liable to be porous and leak, while if it is too fine it will stick to the wiping cloth, and make a perfect joint very difficult to obtain. Some workmen are able, however, to use a much finer solder than others.. To test the quality of the solder, a good plan is to stir the solder thoroughly, and pour a small quantity of it onto a cold surface. If on cooling, it leaves a mottled appearance, it is generally about right for the avearge workman, but if it shows a granulated appearance, it has too much lead, and is therefore too coarse. If it appears very bright,
Related Questions
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- What are the melting points of lead and tin?
