Silver solder PSr 25F

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

Chemical content, %

Ag

Cu

Zn

Sn

Mn

Sb

P

Cd

Ni

Pb

Impurity no more

Pb

Fe

Bi

The sum of the defined impurity

PSr 25F

25±0,3

Remains

-

-

-

-

5,0±0,5

-

-

-

0,010

0,15

0,010

0,15

Dimensions of solder:

Index of solder

Thickness, mm

Width, mm

Length, mm

Min

Max

Min

Max

Min

Max

PSr 25F

0,1

5

50

200

100

400

Diameter of wire:

Index of wire

Diameter, mm

Min

Max

PSr 25F

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 25F

8300

998 (725)

918 (645)

18,6

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.