Solder psr 15, Dnipropetrovsk region.

Solder silver mark PSr 15 is an alloy of silver, copper and phosphorus with very good fluidity characteristics. Ego can be used to join copper to copper-based materials (for example, bronze and brass). Application of solder PSr 15: for tinning and soldering works of jewelry production, products made of copper (copper pipes used in hydraulic and pneumatic systems), products made of copper and nickel silver, as well as nickel-copper alloys. Seams obtained when using PSr 15 are characterized by corrosion resistance, strength and tightness.

Chemical composition of solder PSr 15:
silver Ag - about 14.5-15.5%;(//tractor-service.com)
copper Cu - about 79.09-80.85%;
phosphorus P - 4.5-5.1%;
iron ≤ 0.5%;
bismuth, lead ≤ 0.1%.
"