Designation
| Name |
The value |
| Designation GOST Cyrillic |
АК9пч |
| Designation GOST Latin |
AK9pch |
| Transliteration |
AK9pch |
| By chemical elements |
- |
| Name |
The value |
| Designation GOST Cyrillic |
АЛ4-1 |
| Designation GOST Latin |
AL4-1 |
| Transliteration |
AL4-1 |
| By chemical elements |
- |
Description
Alloy Ak9pch used: for the manufacture of ingots and shaped castings by various casting methods (sand casting, investment casting, gravity die casting, pressure casting).
Note
Aluminum foundry alloy of the system Al-Si-Mg.
Standards
| Name |
Code |
Standards |
| Non-ferrous metals, including rare, and their alloys |
В51 |
GOST 1583-93 |
| Castings, non-ferrous metals and alloys |
В84 |
OST 1 80029-83 |
Chemical composition
| Standard |
Mn |
Si |
Fe |
Cu |
Al |
B |
Ti |
Zn |
Sn |
Pb |
Zr |
Mg |
Be |
| GOST 1583-93 |
0.2-0.35 |
9-10.5 |
≤0.3 |
≤0.1 |
Rest |
≤0.1 |
0.15 |
≤0.3 |
≤0.005 |
≤0.03 |
≤0.15 |
0.23-0.3 |
≤0.1 |
Al is the base.
According to GOST 1583-93, the iron content is specified for all types of casting (in sand molds and in the process of smelting, casting in chill molding, injection molding). The amount of allowable impurities should be for all types of casting ≤ 0.60%.
Mechanical properties
| σU, MPa |
d |
HB, MPa |
| Casting (gravity die casting, pressure, liquid die forging). Mode T1: Artificial aging at 170-180 °C (excerpt 5-17 hours) |
| ≥196 |
≥2 |
≥70 |
| Casting (sand casting, investment casting, gravity die casting, pressure). Without heat treatment |
| ≥157 |
≥3 |
≥50 |
| Casting, including alloy, modified (m). T6 mode: Quenching in water from 530-540 °C (extract 2-6 h) + Artificial aging at 170-180 °C (extract 10-15 hours) |
| ≥245 |
≥3.5 |
≥70 |
| ≥265 |
≥4 |
≥70 |
Description mechanical marks
| Name |
Description |
| σU |
Limit short-term strength |
| d |
Elongation after rupture |
| HB |
Brinell hardness number |
