Alloy Ak8l (АЛ34)
Designation
| Name |
The value |
| Designation GOST Cyrillic |
АК8л |
| Designation GOST Latin |
AK8l |
| Transliteration |
AK8l |
| The chemical elements |
- |
| Name |
The value |
| Designation GOST Cyrillic |
АЛ34 |
| Designation GOST Latin |
AL34 |
| Transliteration |
AL34 |
| The chemical elements |
- |
Description
Alloy Ak8l used: for the manufacture of various ingots and shaped castings by various casting methods (sand casting, investment casting, gravity die casting).
Note
Aluminum foundry alloy of the system Al-Si-Mg. The alloy has high integrity.
Standards
| Name |
Code |
Standards |
| Non-ferrous metals, including rare metals, and their alloys |
В51 |
GOST 1583-93 |
| Castings from non-ferrous metals and alloys |
В84 |
OST 1 80029-83 |
Chemical composition
| Standard |
Mn |
Si |
Fe |
Cu |
Al |
B |
Ti |
Zn |
Zr |
Mg |
Be |
| GOST 1583-93 |
≤0.1 |
6.5-8.5 |
≤0.6 |
≤0.3 |
The rest |
≤0.1 |
0.3 |
≤0.3 |
≤0.2 |
0.35-0.55 |
0.15-0.4 |
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 during casting in the mold is ≤ 0.60%. The amount of allowable impurities should be for casting in sand molds and for investment models ≤ 1.00%, casting in chill molds ≤ 1.00%
Mechanical characteristics
| σB, MPa |
d |
Brinell hardness number, MPa |
| Castings are supplied without heat treatment |
| ≥206 |
≥2 |
≥70 |
| Casting. Mode T1: Artificial aging at 185-195 °C (extract 3-4 hours) |
| ≥225 |
≥1 |
≥80 |
| Casting. Mode T2: Annealing at 290-310 °C (2-4 h exposure) |
| ≥176 |
≥2.5 |
≥60 |
| Casting. Mode T4: Quenching in water from 530-540 °C (10-16 h aging) |
| ≥255 |
≥4 |
≥70 |
| ≥274 |
≥6 |
≥80 |
| Casting. Mode T5: Quenching in water from 530-540 °C (aging 10-16 h) + artificial aging at 170-180 °C (6 h exposure) |
| ≥294 |
≥2 |
≥85 |
| ≥333 |
≥4 |
≥90 |
Description mechanical marks
| Name |
Description |
| σB |
Limit short-term strength |
| d |
Elongation after rupture |
Physical characteristics
| Temperature |
r, кг/м3 |
R, НОм · м |
| 20 |
2630 |
462 |
A description of the physical symbols
| Name |
Description |
| l |
Coefficient of thermal conductivity |
| С |
Specific heat |
