Description: Solder____ is the two-component alloy consisting of ___% of silver and ___% of copper. Solder ____ is eutectic alloy with a melting temperature___ оС.
Normative documents: Solder is produced according to GHOST 19746-74.
Chemical content of silver solders:
|
Index of solder |
||||||||||||||
|
Ag |
Cu |
Zn |
Sn |
Mn |
Sb |
P |
Cd |
Ni |
Pb |
Impurity no more |
||||
|
Pb |
Fe |
Bi |
The sum of the defined impurity |
|||||||||||
|
PSr 37,5 |
37,5±0,3 |
Remains |
5,5±0,5 |
- |
8,2±0,3 |
- |
- |
- |
- |
- |
0,050 |
0,10 |
0,005 |
0,15 |
Dimensions of solder:
|
Index of solder |
Thickness, mm |
Width, mm |
Length, mm |
|||
|
Min |
Max |
Min |
Max |
Min |
Max |
|
|
PSr 37,5 |
0,1 |
5 |
50 |
200 |
100 |
400 |
Diameter of wire:
|
Index of wire |
Diameter, mm |
|
|
Min |
Max |
|
|
PSr 37,5 |
0,15 |
6 |
Fusing temperature, density and specific electrical resistance:
|
Index of solder |
Density, kg/m3 |
Fusing temperature, К (°С) |
Specific electrical resistance, 10-3 Ohm·m |
|
|
Top critical thermal point |
Bottom critical thermal point |
|||
|
PSr 37,5 |
8900 |
1083 (810) |
998 (725) |
37,2 |
Areas of use:
Solder is used when soldering copper, copper and copper-nickel alloys, nickel, covar, a German silver, latuny and бронз, soldering of iron-nickel alloy with the silvered details, soldering was become with copper, nickel, copper and copper-nickel alloys, soldering of copper with the nickelized tungsten, soldering and tinning of jewelry.
