Alloy AK7C9 (АЛ11)
Designation
| Name |
The value |
| Designation GOST Cyrillic |
АК7Ц9 |
| Designation GOST Latin |
AK7Ts9 |
| Transliteration |
AK7Ts9 |
| The chemical elements |
- |
| Name |
The value |
| Designation GOST Cyrillic |
АЛ11 |
| Designation GOST Latin |
AL11 |
| Transliteration |
AL11 |
| The chemical elements |
- |
Description
Alloy AK7C9 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-Zn.
Standards
| Name |
Code |
Standards |
| Non-ferrous metals, including rare metals, and their alloys |
В51 |
GOST 1583-93, OST 4.021.009-92, OST 4.021.010-92 |
| Castings from non-ferrous metals and alloys |
В84 |
OST 1 80029-83 |
Chemical composition
| Standard |
Mn |
Si |
Fe |
Cu |
Al |
Zn |
Mg |
| GOST 1583-93 |
≤0.5 |
6-8 |
≤0.7 |
≤0.6 |
The rest |
7-12 |
0.1-0.3 |
Al is the base.
According to GOST 1583-93, the iron content is specified for casting in sand molds and for investment models. The iron content for molding in the mold is ≤ 1.20%, with die casting ≤ 1.50%. The amount of impurities accounted for should be for casting in sand molds and for investment models ≤ 1.70%, casting in chill molds ≤ 1.90%, injection molding ≤ 2.50%.
According to OST 4.021.009-92 with a child under pressure, the absence of magnesium is allowed.
Mechanical characteristics
| σB, MPa |
d |
Brinell hardness number, MPa |
| Casting. Without heat treatment |
| ≥196 |
≥2 |
≥80 |
| ≥206 |
≥1 |
≥80 |
| ≥176 |
≥1 |
≥60 |
| Casting. Mode T2: Annealing at 290-310 °C (2-4 h exposure) |
| ≥216 |
≥2 |
≥80 |
Description mechanical marks
| Name |
Description |
| σB |
Limit short-term strength |
| d |
Elongation after rupture |
Physical characteristics
| Temperature |
r, кг/м3 |
| 20 |
2940 |
A description of the physical symbols
| Name |
Description |
| l |
Coefficient of thermal conductivity |
| С |
Specific heat |
