27f58cad___Academy_of_Aerospace_Quality__Section
[Term] Lead [Definition] A heavy, bluish-gray, soft, ductile metal, the chemical element of atomic number 82. It has been used in roofing, plumbing, ammunition, storage batteries, radiation shields, etc., and its compounds have been used in crystal glass, as an antiknock agent in gasoline, and (formerly) in paints [Source] google dictionary [Section] 
Soldering
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