Aluminum alloy 1925C

No foreign analogues

Designed for the production of extruded pipes and fittings


Country Section Category
CIS, Russia, Ukraine Aluminum, aluminum alloys Wrought Aluminum Alloys

Chemical composition

Standard Fe, % Si, % Mg, % Mn, % Cr, % Ti, % Cu, % Zn, % Zr, % Al, % Примеси, %
GOST 4784-97 < 0.4 < 0.4 0.8–1.4 < 0.5 0.1–0.3 0.01–0.1 < 0.1 4.3–5.5 < 0.2 90.95–94.79 < 0.15

Information on suppliers

Physical characteristics

Temperature, °C $$\alpha\cdot 10^{6}$$, $$K^{-1}$$ $$\varkappa$$, $$\frac{W}{m\cdot K}$$ $$\rho$$, $$\frac{kg}{m^3}$$ $$R\cdot 10^{-6}$$, $$\Omega\cdot m$$
20 22.3 115–130 2800 4.5–6

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\sigma_{Y}$$, $$MPa$$ d5, % Treatment
Pipes are pressed. GOST 18482-79 400 Transverse raw, compacting, thin, Transverse 440 360 10

Brinell hardness number

Rolling Standard Classifiers Value, HBW
Pipes are pressed. GOST 18482-2018 raw, compacting, thin, Transverse 280–320

Technological Properties

Difficult to weld


Сплав Д26


Standard Description
GOST 4784-97
GOST 18482-2018

Description of chemical elements

Element Units of measurement Description
Fe % Iron
Примеси % Impurities
Si % Silicon
Mg % Magnesium
Mn % Manganese
Cr % Chrome
Ti % Titan
Cu % Copper
Zn % Zinc
Zr % Zirconium
Al % Aluminium

Description of physical characteristics

Parameter Units of measurement Description
$$\alpha\cdot 10^{6}$$ $$K^{-1}$$ Coefficient of thermal (linear) expansion (range 20°C–T)
$$\varkappa$$ $$\frac{W}{m\cdot K}$$ 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

Designation of types of weldability

Parameter Units of measurement Description
no limits Welding is performed without heating and without subsequent heat treatment
Boundedly welded Welding is possible with heating up to 100–120 °C and subsequent heat treatment
Difficult to weld For obtaining quality welded joints, additional operations are required: heating up to 200–300 °C for welding, heat treatment after welding — annealing
Not applicable for welded structures