Silver solder PSr 72

Silver solder PSr 72 from Ecotec: 72% Ag, 28% Cu, melting point 779°C. Eutectic, GOST 19738-2015. Buy PSr 72 wire or strip.

Description: PSr 72 solder is a two-component alloy consisting of 72% silver and 28% copper. PSr 72 solder is a eutectic alloy with a melting point of 779°C. Regulatory documentation: PSr 72 solders are manufactured in accordance with GOST 19738-2015, PSr 72 wire — GOST 19746-2015, PSr 72 strip — GOST 19739-2015.

Chemical composition of silver solders:

Solder grade

Chemical composition, %

Impurities, not more than

Sum of determined impurities

PSr 72

72±0.5

Balance

—

0.005

0.10

0.005

0.10

Solder dimensions:

Solder grade	Thickness, mm	Width, mm	Length, mm
Min	Max	Min	Max	Min	Max
PSr 72	0.1	5	50	200	100	400

Wire diameter:

Wire grade	Diameter, mm
Min	Max
PSr 72	0.15	6

Melting point, density, and electrical resistivity:

Solder grade	Density, kg/m3	Melting point, K (°C)	Electrical resistivity, 10-3 Ohm·m
Upper critical point	Lower critical point
PSr 72	10000	1052 (779)	1052 (779)	2.1

Applications:

PSr 72 solder is used for brazing copper, copper and copper-nickel alloys, nickel, Kovar, nickel silver, brasses and bronzes, brazing iron-nickel alloy with silver-plated parts, brazing steel with copper, nickel, copper and copper-nickel alloys, brazing copper with nickel-plated tungsten, brazing and tinning jewelry.

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Silver solder PSr 72

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