Silver solder PSr 25F
Silver solder PSr 25F from Ecotec: 25% Ag, 5% Cu, 69% Zn. Eutectic alloy with m.p. 419°C, ideal for high-temperature joints. Buy from Ecotec.
Description: PSr 25F solder is a two-component silver-copper alloy. It is a eutectic alloy.
Regulatory documentation: PSr 25F solders are manufactured in accordance with GOST 19738-2015, PSr 25F wire — GOST 19746-2015, PSr 25F strip — GOST 19739-2015.
Chemical composition of silver solders:
|
Solder grade |
Chemical composition, % |
|||||||||||||
|
Ag |
Cu |
Zn |
Sn |
Mn |
Sb |
P |
Cd |
Ni |
Pb |
Impurities, max |
||||
|
Pb |
Fe |
Bi |
Sum of determined impurities |
|||||||||||
|
PSr 25F |
25.0±0.3 |
Balance |
— |
— |
— |
— |
5.0±0.5 |
— |
— |
— |
0.010 |
0.15 |
0.010 |
0.15 |
Solder dimensions:
|
Solder grade |
Thickness, mm |
Width, mm |
Length, mm |
|||
|
Min |
Max |
Min |
Max |
Min |
Max |
|
|
PSr 25F |
0.1 |
5 |
50 |
200 |
100 |
400 |
Wire diameter:
|
Wire grade |
Diameter, mm |
|
|
Min |
Max |
|
|
PSr 25F |
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 25F |
8300 |
998 (725) |
918 (645) |
18.6 |
Applications:
PSr 25F solder is a self-fluxing solder and is used for soldering copper with bronze, copper with copper, and bronze with bronze.
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