1985ch alloyed alloy

For the manufacture of pipes and extruded profiles; shipbuilding and aircraft building parts.


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

Chemical composition

Standard Fe, % Si, % Be, % Mg, % Mn, % Cr, % Ti, % Cu, % Zn, % Zr, % Al, %
OST 5.9466 - 88 < 0.3 < 0.2 0.0002–0.005 5–5.9 0.25–0.5 0.1–0.2 < 0.07 < 0.1 2.2–2.8 0.08–0.2 89.725–92.3698

Information on suppliers

Physical characteristics

Temperature, °C $$\rho$$, $$\frac{kg}{m^3}$$
20 2790

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\sigma_{Y}$$, $$MPa$$ d5, % Treatment
Forgings OST 1 90026-80 100–400 Transverse raw, deformation, fat, Transverse 650–680 360–380 6

Твёрдость по Роквеллу

Rolling Standard Classifiers Value, HRC
Forgings OST 1 90026-80 raw, deformation, fat, Transverse 27–30

Technological Properties

Weldability Flake Susceptibility Propensity to temper brittleness
Boundedly welded not sensitive loathsome


Standard Description
OST 5.9466 - 88

Description of chemical elements

Element Units of measurement Description
Fe % Iron
Si % Silicon
Be % Beryllium
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
$$\rho$$ $$\frac{kg}{m^3}$$ The density of the material

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