Alloy of tin, silver, copper and bismuth Works with any high grade paste or liquid flux and a standard propane torch Oatey No.95 tinning flux recommended Provides excellent flow and fill characteristics with a melting range of 420 to 460 degrees F; 0.117 in. diameter Used for tin plate work, sheet metal seaming, and hot water heating lines Meets requirements of Safe Drinking Water Act for use on copper potable water lines