Alloy Д24 (ВАД1; 1191)
Designation
| Name |
The value |
| Designation GOST Cyrillic |
Д24 |
| Designation GOST Latin |
D24 |
| Transliteration |
D24 |
| The chemical elements |
Д24 |
| Name |
The value |
| Designation GOST Cyrillic |
ВАД1 |
| Designation GOST Latin |
BAD1 |
| Transliteration |
VAD1 |
| The chemical elements |
ВAlД1 |
| Name |
The value |
| Designation GOST Cyrillic |
1191 |
| Designation GOST Latin |
1191 |
| Transliteration |
1191 |
| The chemical elements |
1191 |
Description
Alloy Д24 used: for the manufacture of welded structures operating at cryogenic and elevated temperatures; for the production of 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.
Note
Д24 — alloy system Al-Cu-Mg aluminum of high heat resistance, hardened by heat treatment (quenching + natural ageing). The alloy is characterized by the combination of high static strength (up to 450−500 MPa) at room and elevated (up to 150−175 °C) temperatures, high fatigue strength and fracture toughness. The disadvantage is the low corrosion resistance, the products require careful corrosion protection.
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 90113-86, TU 1-1-105-79 |
| Sheets and stripes |
В53 |
GOST 17232-99, TU 1-92-18-73 |
| Non-ferrous metals, including rare metals, and their alloys |
В51 |
OST 1 90048-90 |
| Metal forming. Forgings |
В03 |
OST 1 90073-85 |
Chemical composition
| Standard |
Mn |
Si |
Fe |
Cu |
Al |
Ti |
Zn |
Zr |
Mg |
Be |
| OST 1 90048-90 |
0.35-0.8 |
≤0.2 |
≤0.3 |
3.8-4.5 |
The rest |
0.03-0.1 |
≤0.1 |
0.07-0.2 |
2.3-2.7 |
0.0002-0.005 |
Al is the base.
According to OST 1 90048-90 the total content of other impurities is ≤ 0.10%, individually ≤ 0.050%. Other admixtures include impurities, the limits of which are not specified. Beryllium is not determined by chemical analysis, but is introduced by calculation.
Mechanical characteristics
| Section, mm |
sT|s0,2, MPa |
σB, MPa |
d5, % |
Brinell hardness number, MPa |
| Plates according to GOST 17232-99 in the delivery condition. T: Quenching + natural aging (samples transverse) |
| 11-25 |
≥265 |
≥410 |
≥7 |
- |
| 25-40 |
≥245 |
≥380 |
≥5 |
- |
| 40-70 |
≥235 |
≥365 |
≥4 |
- |
| 70-80 |
≥235 |
≥335 |
≥3 |
- |
| 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 + natural aging |
| ≤5 |
≥295 |
≥390 |
≥10 |
- |
| 10-20 |
≥305 |
≥420 |
≥10 |
- |
| 20-40 |
≥315 |
≥440 |
≥10 |
- |
| 5-10 |
≥295 |
≥410 |
≥10 |
- |
| Stamping up to 100 mm for OST 1 90073-85. Mode T1: Quenching + artificial aging (indicated by the direction of samples) |
|
≥275 |
≥390 |
≥6 |
≥110 |
|
≥285 |
≥400 |
≥7 |
≥110 |
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 |
Technological properties
| Name |
The value |
| Weldability |
good |
