Alloy D19ch used: for the production of power subassemblies of aircraft, car bodies, pipes, operating at temperatures up to +200−250 °C; profiles with cross-sectional area of 200 cm² and a diameter of circumcircle up to 350mm suitable for use in the aviation industry and special machine building industries; moulded panels of constant cross section with longitudinal fins in the aircraft industry, is made by a sweep of extruded finned tubes in the plane of the width of the fabric up to 2100 mm.

Standards

Name	Code	Standards
Bars and shapes	В52	GOST 13616-97, GOST 13617-97, GOST 13618-97, GOST 13619-97, GOST 13620-90, GOST 13621-90, GOST 13622-91, GOST 13623-90, GOST 13624-90, GOST 13737-90, GOST 13738-91, GOST 17575-90, GOST 17576-97, GOST 29296-92, GOST 29303-92, GOST Р 50066-92, GOST Р 50067-92, GOST Р 50077-92, OST 1 92041-90, OST 1 90113-86, OST 1 90177-75
Non-ferrous metals, including rare, and their alloys	В51	GOST 4784-97, OST 1 90048-90
Sheets and strips	В53	OST 1 90246-77, OST 1 90166-75, OST 1 90070-92, TU 1-2-298-80, TU 1-92-161-90
Bars	В55	OST 1 90395-91

Chemical composition

Standard	Mn	Si	Fe	Cu	Al	Ti	Zn	Mg	Be
OST 1 90048-90	0.4-0.9	≤0.2	≤0.3	3.8-4.3	Rest	≤0.1	≤0.1	1.7-2.3	0.0002-0.005
GOST 4784-97	0.4-0.9	≤0.2	≤0.3	3.8-4.3	Rest	≤0.1	≤0.1	1.7-2.3	0.0002-0.005

Al is the base.
According to GOST 4784-97 and OST 1 90048-90, the mass fraction of each other impurity (not regulated) ≤ 0.05%, the total mass fraction of other impurities ≤ 0.10%. Beryllium is not determined by chemical analysis, but is introduced by calculation.

Mechanical properties

Section, mm	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %
Panel OST 1 90177-75. In the column of the delivery condition includes a direction of cutting out of samples
-	≥313	≥421	≥10
-	≥294	≥392	≥7
Panels are extruded with fins on OST 1 92041-90 on delivery
	≥255	≥390	≥10
	≥295	≥410	≥10
Extruded at OST 1 90113-86 normal strength with the cross-sectional area 200 cm2 and a diameter of circumcircle up to 350mm (sample a longitudinal, in cross-section shows the thickness of the shelf). Quenching + natural aging
≤5	≥295	≥390	≥10
10-20	≥305	≥420	≥10
20-40	≥305	≥440	≥10
5-10	≥295	≥410	≥10

Description mechanical marks

Name	Description
s_T\|s_0,2	Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σ_U	Limit short-term strength
d₅	Elongation after rupture

Physical characteristics

Temperature	Е, HPa	r, kg/m³	R, Mr. · m
20	70	2760	61

A description of the physical symbols

Name	Description
Е	The normal elasticity modulus
r	Density
l	Coefficient of thermal conductivity
R	UD. the resistivity

Alloy D19ch

Designation

Description