Alloy AK4-1 (1141)
Designation
| Name |
The value |
| Designation GOST Cyrillic |
АК4-1 |
| Designation GOST Latin |
AK4-1 |
| Transliteration |
AK4-1 |
| The chemical elements |
- |
| Name |
The value |
| Designation GOST Cyrillic |
1141 |
| Designation GOST Latin |
1141 |
| Transliteration |
1141 |
| The chemical elements |
1141 |
Description
Alloy AK4−1 is used: for the manufacture of plates, sheets, forged blanks; parts for heating aircraft structures, including parts of engines, parts, jet engines; 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; large extruded pipes.
Note
Basic heat-resistant alloy medium strength (σin=420 MPa, σ1000150°= 270 MPa).
ISO 209−1 brand of alloy AK4−1ch is designated 2618.
Standards
| Name |
Code |
Standards |
| Sectional and shaped rolling |
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 92093-83, OST 1 92041-90, OST 1 92066-91, OST 1 92067-92, OST 1 90113-86, OST 1 90177-75, OST 1 92007-87, TU 1-2-424-82 |
| Sheets and stripes |
В53 |
GOST 17232-99, OST 1 90117-83, TU 1-2-212-79, TU 1-2-464-84, TU 1-2-9-77, TU 1-92-47-77, TU 1-92-48-77, TU 1-804-473-2009 |
| Bars |
В55 |
GOST 21488-97, GOST Р 51834-2001, OST 1 90395-91, TU 1-2-135-75, TU 1-2-315-78 |
| Non-ferrous metals, including rare metals, and their alloys |
В51 |
GOST 4784-97, OST 1 92014-90, OST 1 90048-90 |
| Metal forming. Forgings |
В03 |
OST 1 90073-85 |
| Pipes from non-ferrous metals and alloys |
В64 |
OST 1 92048-90, OST 1 92048-76, TU 1-2-361-79, TU 1-2-365-81, TU 1-2-451-83, TU 1-9-148-76, TU 1-9-507-73 |
Chemical composition
| Standard |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
Al |
Ti |
Zn |
Mg |
| OST 1 92014-90 |
≤0.2 |
- |
≤0.35 |
0.8-1.4 |
0.8-1.4 |
1.9-2.7 |
The rest |
≤0.1 |
≤0.3 |
1.2-1.8 |
| GOST 4784-97 |
≤0.2 |
≤0.1 |
≤0.35 |
0.8-1.4 |
0.8-1.4 |
1.9-2.7 |
The rest |
0.02-0.1 |
≤0.3 |
1.2-1.8 |
| OST 1 90048-90 |
≤0.1 |
≤0.1 |
0.1-0.25 |
0.9-1.4 |
0.9-1.4 |
2-2.6 |
The rest |
0.05-0.1 |
≤0.1 |
1.2-1.8 |
Al is the base.
According to GOST 4784-97 the chemical composition is given for the alloy AK4-1. Mass fraction of each other impurity (not regulated) ≤ 0.05%, total mass fraction of other impurities ≤ 0.10%. The chemical composition of the alloy AK4-1h differs by the admittance of the mass fractions of the elements: silicon = 0.10-0.25%, iron = 0.90-1.30%, magnesium = 1.30-1.80%, zinc ≤ 0.10 %, titanium = 0.04-0.10%, nickel = 0.90-1.20%.
According to OST 1 90048-90 the chemical composition is given for the alloy AK4-1h. Mass fraction of each other impurity (not regulated) ≤ 0.05%, total mass fraction of other impurities ≤ 0.10%.
According to OST 1 92014-90 the chemical composition is given for the alloy AK4-1. Mass fraction of each other impurity (not regulated) ≤ 0.05%, total mass fraction of other impurities ≤ 0.10%.
Mechanical characteristics
| Section, mm |
sT|s0,2, MPa |
σB, MPa |
d5, % |
d |
kJ/m2, кДж/м2 |
Brinell hardness number, MPa |
| Sheet metal in delivery condition |
|
≥310 |
≥380 |
≥6 |
- |
≥200 |
109-117 |
| Panel OST 1 90177-75. In the column of the delivery condition includes a direction of cutting out of samples |
| - |
≥323 |
≥392 |
≥6 |
- |
- |
- |
| - |
≥313 |
≥372 |
≥4 |
- |
- |
- |
| Panels are extruded with fins on OST 1 92041-90 in the delivery condition of alloy AK4-1 and AK4-1ch. T1 (quenching + artificial aging) |
|
≥325 |
≥380 |
≥6 |
- |
- |
- |
| Plate in the delivery condition on the other 1-804-473-2009 |
| 11-25 |
≥325 |
≥390 |
- |
≥6 |
- |
- |
| 25-80 |
≥295 |
≥385 |
- |
≥6 |
- |
- |
| Rolled plates of grade alloy AK4-1ch on the other 1-2-9-77 in the delivery condition. T (quenching + natural ageing) |
| 12-40 |
≥324 |
≥392 |
- |
≥6 |
- |
- |
| Plates according to GOST 17232-99 in the delivery condition. T1: Quenching + artificial aging (samples perpendicular to the plane of the plate) |
| 40-80 |
- |
≥370 |
- |
≥4 |
- |
- |
| Plates according to GOST 17232-99 in the delivery condition. T1: Quenching + artificial aging (samples transverse) |
| 11-25 |
≥325 |
≥390 |
- |
≥6 |
- |
- |
| 25-80 |
≥295 |
≥385 |
- |
≥6 |
- |
- |
| Forgings section up to 350 mm according to OST 1 90073-85. Mode T1: Quenching + artificial aging (in the cross section indicates the direction of the samples) |
|
≥255 |
≥375 |
≥4 |
- |
- |
≥109 |
|
≥265 |
≥375 |
≥5 |
- |
- |
≥109 |
|
≥265 |
≥375 |
≥5 |
- |
- |
≥109 |
|
≥275 |
≥390 |
≥6 |
- |
- |
≥109 |
|
≥265 |
≥375 |
≥4 |
- |
- |
≥109 |
| Extruded normal strength with the cross-sectional area 200 cm2 and a diameter of the circumscribed circle of up to 350 mm. (sample transverse cross-sections show the direction of the sample). Quenching + artificial aging |
|
- |
≥375 |
≥4 |
- |
- |
- |
|
≥315 |
≥380 |
≥5 |
- |
- |
- |
| Extruded normal strength with the cross-sectional area 200 cm2 and a diameter of the circumscribed circle of up to 350 mm. (sample longitudinal cross-section shows the thickness of the shelf). Quenching + artificial aging |
| ≤10 |
≥305 |
≥390 |
≥6 |
- |
- |
- |
| 10-150 |
≥325 |
≥390 |
≥8 |
- |
- |
- |
| The pressed bars normal strength in the delivery condition according to GOST 21488-97 (longitudinal samples). T1 (quenching + artificial aging) |
| 100-300 |
≥275 |
≥365 |
≥6 |
- |
- |
- |
| 8-100 |
≥315 |
≥390 |
≥6 |
- |
- |
- |
| Large-size extruded tubes according to OST 1 92048-76 in the delivery condition. T1 (quenching + artificial aging) |
|
≥255 |
≥373 |
≥5 |
- |
- |
- |
Description mechanical marks
| Name |
Description |
| Section |
Section |
| sT|s0,2 |
Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2% |
| σB |
Limit short-term strength |
| d5 |
Elongation after rupture |
| d |
Elongation after rupture |
| kJ/m2 |
Toughness |
Physical characteristics
| Temperature |
Е, ГПа |
r, кг/м3 |
R, НОм · м |
| 20 |
72 |
2800 |
55 |
A description of the physical symbols
| Name |
Description |
| Е |
The normal elasticity modulus |
| r |
Density |
| l |
Coefficient of thermal conductivity |
| R |
UD. the resistivity |
| С |
Specific heat |
