Solder Wire, Form Flux-Cored Wire, Material Composition 60 PercentTin, 40 Percent Lead, Wire Diameter 0.03125 in, Weight 16 oz, Melting Temperature (Minimum) 445 Degrees F, Melting Temperature (Maximum) 500 Degrees F, Flux Type Rosin, Solder Series 60/40, For Joining Copper Alloy, Lead, Nickel Alloy, Steel, Application Electrical, Small Connection, Container Type Spool, Flux Requirement Contains Flux Core, Standards ASTM B-32, J-STD-006