Aluminum Alloy 1985PCh

No foreign analogues

Designed for the production of forgings and parts of aerospace engineering

Classification

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, %	Примеси, %
OST 5Р.9466-88	< 0.15	< 0.1	0.0005–0.002	5–5.9	0.25–0.5	0.1–0.2	< 0.07	< 0.05	2.2–2.8	0.08–0.2	89.878–92.3695	< 0.15

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Physical characteristics

Temperature, °C	$$\alpha\cdot 10^{6}$$, $$K^{-1}$$	$$\varkappa$$, $$\frac{W}{m\cdot K}$$	$$\rho$$, $$\frac{kg}{m^3}$$	Cp, Дж/кг·К
20	21.9	119	2900	0.7961

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, compacting, fat, Transverse	660	360	6–8

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Rolling	Standard	Classifiers	Value, HRC
Forgings	OST 1 90026-80	raw, compacting, fat, Transverse	28–32

Technological Properties

Weldability	Flake Susceptibility	Propensity to temper brittleness
Difficult to weld	insensitive	not inclined

Analogues

Russia
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Standards

Standard	Description
OST 5Р.9466-88

Description of chemical elements

Element	Units of measurement	Description
Fe	%	Iron
Примеси	%	Impurities
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
Cp	Дж/кг·К	Specific heat of material
$$\alpha\cdot 10^{6}$$	$$K^{-1}$$	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

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