Solderweld Part number SW-SS1524K Sil Sol 15% Sil-Sol Round Rod 1 Pound Sticks
Round rods with better flow for more effective joints
The self fluxing property of this filler metal is effective on copper only.
For copper-base alloys, such as brass or bronze, the joints should be fluxed.
Should not be used on nickel-base and iron-base alloys, as the phosphorus reacts with the nickel or iron to form brittle compounds at the interface of the joints.