Alloy Ak7pch (АЛ9-1)
Designation
| Name |
The value |
| Designation GOST Cyrillic |
АК7пч |
| Designation GOST Latin |
AK7pch |
| Transliteration |
AK7pch |
| The chemical elements |
- |
| Name |
The value |
| Designation GOST Cyrillic |
АЛ9-1 |
| Designation GOST Latin |
AL9-1 |
| Transliteration |
AL9-1 |
| The chemical elements |
- |
Description
Alloy Ak7pch used: for the manufacture of various ingots and shaped castings by various casting methods (sand casting, investment casting, gravity die casting, pressure).
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, OST 1 90180-75 |
Chemical composition
| Standard |
Mn |
Si |
Fe |
Cu |
Al |
B |
Ti |
Zn |
Sn |
Pb |
Zr |
Mg |
Be |
| GOST 1583-93 |
≤0.1 |
7-8 |
≤0.3 |
≤0.1 |
The rest |
≤0.1 |
0.15 |
≤0.2 |
≤0.005 |
≤0.03 |
≤0.15 |
0.25-0.4 |
≤0.1 |
| OST 1 90180-75 |
≤0.1 |
7-8 |
≤0.3 |
≤0.1 |
The rest |
≤0.1 |
0.08-0.15 |
≤0.3 |
≤0.005 |
≤0.03 |
≤0.2 |
0.25-0.4 |
≤0.1 |
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 casting in the mold is ≤ 0.40%, with die casting ≤ 0.50%. The amount of allowable impurities should be for casting in sand molds and for investment models ≤ 0.60%, casting in chill molds ≤ 0.70%, injection molding ≤ 0.80%.
According to OST 1 90180-75, the amount of impurities to be accounted for should be for casting in sand molds, for melted models, casting into chill molds, casting into shell molds should be ≤ 0.60%.
Mechanical characteristics
| σB, MPa |
d |
Brinell hardness number, MPa |
| Castings of high strength. Mode T5: Quenching in water from 530-540 °C (excerpt 2-16 h) + incomplete artificial aging at 150 °C (extract 3-10 h) Time between quenching and aging shall not exceed 3 hours |
| ≥235 |
≥2.5 |
- |
| ≥265 |
≥3 |
- |
| ≥266 |
≥2 |
- |
| ≥235 |
≥2.5 |
- |
| ≥177 |
≥2 |
- |
| ≥206 |
≥2.5 |
- |
| Castings of high strength. T6 mode: Quenching in water from 530-540 °C (excerpt 2-16 h) + Complete artificial aging at 175 °C (extract 3-10 h) |
| ≥255 |
≥2 |
- |
| ≥294 |
≥3 |
- |
| ≥235 |
≥1.5 |
- |
| ≥255 |
≥2 |
- |
| ≥206 |
≥1 |
- |
| ≥221 |
≥1.5 |
- |
| Casting, including alloy, modified (m). Mode T4: Quenching in water from 530-540 °C (delay of 2-12 hrs) |
| ≥196 |
≥5 |
≥50 |
| ≥225 |
≥5 |
≥50 |
| Casting, including alloy, modified (m). Mode T5: Quenching in water from 530-540 °C (exposure 2-12 h) + incomplete artificial aging at 145-155 °C (extract 3-10 h) |
| ≥235 |
≥4 |
≥60 |
| Casting, including alloy, modified (m). T6 mode: Quenching in water from 530-540 °C (exposure 2-12 h) + Complete artificial aging at 170-180 °C (extract 3-10 h) |
| ≥274 |
≥2 |
≥70 |
| ≥294 |
≥3 |
≥70 |
| Casting, including alloy, modified (m). Mode T7: Quenching in water from 530-540 °C (delay of 2-12 hrs) + vacation stabilizing at 215-235 °C (aging for 3-5 hours) |
| ≥206 |
≥2.5 |
≥60 |
| Casting, including alloy, modified (m). Mode T8: Quenching in water from 530-540 °C (exposure 2-12 h) + soothing vacation at 240-260 °C (aging for 3-5 hours) |
| ≥167 |
≥3.5 |
≥55 |
| Casting. Without heat treatment |
| ≥196 |
≥1 |
≥50 |
| Casting. Mode T2: Annealing at 240-260 °C (2-4 h exposure) |
| ≥167 |
≥2 |
≥45 |
Description mechanical marks
| Name |
Description |
| σB |
Limit short-term strength |
| d |
Elongation after rupture |
Physical characteristics
| Temperature |
Е, ГПа |
r, кг/м3 |
R, НОм · м |
| 20 |
70 |
2660 |
457 |
A description of the physical symbols
| Name |
Description |
| l |
Coefficient of thermal conductivity |
| С |
Specific heat |
