Highly recommended for potable water pipe joints, plumbing, refrigeration systems and non-electrical applications. Doesnot char. Flows evenly within the joint and has a low melting point. Hardens into a shiny fillet. Leaves no corrosive residue. Grade: 95/4.5/.5 Tin/Copper/Silver. Tensile Strength: 6400 PSI; Melting Temp: 430  (222  C).