Silver solder PSr 71
PSr 71 solder from Ecotec — an alloy of 71% silver, 28% copper, 1% phosphorus. Suitable for soldering electrical products. GOST 19738-2015.
Description: PSr 71 solder is an alloy of 71% silver, 28% copper, 1% phosphorus. Solidus temperature 654°C, liquidus temperature 795°C.
Regulatory documentation: PSr 71 solders are manufactured in accordance with GOST 19738-2015, PSr 71 wire — GOST 19746-2015, PSr 71 strip — GOST 19739-2015.
Chemical composition of silver solders:
|
Solder grade |
Chemical composition, % |
|||||||||||||
|
Ag |
Cu |
Zn |
Sn |
Mn |
Sb |
P |
Cd |
Ni |
Pb |
Impurities not more than |
||||
|
Pb |
Fe |
Bi |
Sum of determined impurities |
|||||||||||
|
PSr 71 |
71±0.5 |
Balance |
— |
— |
— |
— |
1.0±0.2 |
— |
— |
— |
0.005 |
0.15 |
0.005 |
0.15 |
Solder dimensions:
|
Solder grade |
Thickness, mm |
Width, mm |
Length, mm |
|||
|
Min |
Max |
Min |
Max |
Min |
Max |
|
|
PSr 71 |
0.1 |
5 |
50 |
200 |
100 |
400 |
Wire diameter:
|
Wire grade |
Diameter, mm |
|
|
Min |
Max |
|
|
PSr 71 |
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 71 |
9800 |
1068 (795) |
918 (654) |
4.3 |
Applications:
PSr 71 solder is used for soldering copper and copper-nickel alloys, nickel, Kovar, nickel silver, brasses and bronzes. PSr 71 solder is a self-fluxing solder for soldering copper with bronze, copper with copper, bronze with bronze.
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