Solder Possu25-2

Designation

Name The value
Designation GOST Cyrillic ПОССу25-2
Designation GOST Latin POCCu25-2
Transliteration POSSu25-2
By chemical elements ПSnPbSb25-2

Description

Solder Possu25−2 applies: for the production of ingots, round wire, round rods filled with flux tubes, powder used for tinning and soldering of refrigerating apparatus building, electric manufacturing, motor industry, for abrasive soldering.

Note

Solder tin-lead-antimony.

Standards

Name Code Standards
Non-ferrous metals, including rare, and their alloys В51 GOST 21930-76, GOST 21931-76, GOST 28873-90

Chemical composition

Standard S Ni Fe Cu As Al Zn Sn Sb Pb Bi
GOST 21930-76 ≤0.02 ≤0.08 ≤0.02 ≤0.08 ≤0.02 ≤0.002 ≤0.002 24-26 1.5-2 Rest ≤0.2
Pb is the basis.

Mechanical properties

σU, MPa d KCU, kJ/m2
Pig in the state of delivery
≥37.28 ≥35 ≥235.2

Description mechanical marks

Name Description
σU Limit short-term strength
d Elongation after rupture
KCU Toughness

Physical characteristics

Temperature r, kg/m3 l, W/(m · °C) R, Mr. · m
20 9800 3768 185

A description of the physical symbols

Name Description
l Coefficient of thermal conductivity
С Specific heat