Silvaloy 355 is recommended for joining steel, stainless steel, copper, copper alloys, nickel, nickel alloys and precious metals to themselves or any combination of these. Has the lowest flow temperature, best wetting and best flow characteristics of any cadmium-free, high silver-content, commercial silver solder. Highly recommended for all silver solder jobs where sheet or flow method is desired. A "must" for installing sights and ramps on stainless steel guns since the almost-white color matches stainless steel beautifully. Use with Ultra Flux®.