Oatey® Safe-Flo® Lead Free Plumbing Wire Solder is a silver bearing wire solder designed for plumbing and potable water line applications. Oatey Safe Flo Silver Lead Free Plumbing Solder is recommended for use on potable water systems for sweating joints in a copper water distribution system. Safe Flo Silver Lead Free Solder is also effective on stainless steel, brass alloys, chrome alloys, galvanized steel and cast iron piping. Safe-Flo Solder complies with CA & VT lead content regulations. Copper, bismuth, tin and silver alloy.420°F - 460°F melting range.Meets ASTM Standard B-32 and the requirements of the Safe Drinking Water Act.