Solder tin-lead 30C

It is used for soldering and tinning of current-carrying contact surfaces made of copper, brass, bronze. Soldering wires, steel parts.

Classification

Country Section Category
CIS, Russia, Ukraine Tin, lead, babity Tin-lead solder

Chemical composition

Standard Fe, % Sn, % Bi, % Cu, % Al, % Pb, % ET, %
GOST 21930-76 < 0.02 29.5–31.5 < 0.25 < 0.08 < 0.005 68.115–70.5 < 0.03

Information on suppliers

Physical characteristics

Temperature, °C $$\varkappa$$, $$\frac{W}{m\cdot K}$$ $$\rho$$, $$\frac{kg}{m^3}$$ $$R\cdot 10^{-6}$$, $$\Omega\cdot m$$
20 0.096 9550 0.65

Mechanical properties at 2 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\sigma_{Y}$$, $$MPa$$ d5, % Treatment
Wire GOST 21930-76 8 Transverse 3.5 2.8 50

Brinell hardness number

Rolling Standard Classifiers Value, HBW
Wire GOST 21930-76 2–3

Casting and technological parameters

melting point, solidus, °C melting point, liquidus, °C
235 255

Analogues

Germany USA
Сплав 2.3432 Сплав B 32 (Sn30B)

Standards

Standard Description
GOST 21930-76

Description of chemical elements

Element Units of measurement Description
ET % Total other items
Fe % Iron
Sn % Tin
Bi % Bismuth
Cu % Copper
Al % Aluminium
Pb % Lead

Description of physical characteristics

Parameter Units of measurement Description
$$\varkappa$$ $$\frac{W}{m\cdot K}$$ Coefficient of thermal conductivity (the heat capacity of the material)
$$\rho$$ $$\frac{kg}{m^3}$$ The density of the material
$$R\cdot 10^{-6}$$ $$\Omega\cdot m$$ Electrical resistivity

Description of mechanical properties

Parameter Units of measurement Description
d5 % Elongation at break
$$\sigma_{Y}$$ $$MPa$$ Yield strength
$$\sigma _{U}$$ $$MPa$$ Ultimate tensile strength

Description of the casting and technological parameters

Parameter Units of measurement Description
melting point, solidus °C The temperature at which melts the low melting component
melting point, liquidus °C The temperature at which equilibrium falls first crystal