The AK7 alloy
Alloy AMg6L (AL23)
Alloy AMg6lch (AL23-1)
Alloy AMg5Mz (AL28)
Alloy AMg5K (AL13)
Alloy AMg4K1.5M (AMg4K1.5M1)
Alloy AMg11 (AL22)
Alloy AMg10h (AL27-1)
Alloy AMg10 (AL27)
Alloy AM5 (AL19)
Alloy AM4.5Kd (VAL10)
Alloy AL8
Alloy AL7
Alloy AL6
Alloy AL4MS
Alloy AL4MK
Alloy AL4M
Alloy AL18 (AL18B)
Alloy AMg7 (AL29)
Alloy AMO7-3
Alloy AC4Mg (AL24)
Alloy ACRIV
Alloy B124
Alloy B2616
Alloy BAL10
Alloy VAL11
Alloy VAL12
Alloy VAL14
Alloy VAL16
Alloy VAL18
Alloy ŽLS
Alloy KS740
Alloy KS741
Alloy AK7
Alloy AK10M2H
Alloy AK10Su
Alloy AK12 (AL2)
Alloy AK12M2 (AK11M2)
Alloy AK12M2MgN (AL25)
Alloy AK12MMgN (AL30)
Alloy AK13
Alloy AK18
Alloy AK21M2.5H2.5 (VKZHLS-2)
Alloy AK5M (AL5)
Alloy AK5M2
Alloy AK5M4
Alloy AK5M7
Alloy AK5Mh (AL5-1)
Alloy AK6M2
Alloy AL21
Alloy AK7M2
Alloy AK7pch (AL9-1)
Alloy AK7C9 (AL11)
Alloy AK7h (AL9)
Alloy AK8L (AL34)
Alloy AK8M (AL32)
Alloy AK8M3
Alloy AK8M3h (VAL8)
Alloy AK9 (AL4V)
Alloy AK9M2
Alloy AK9pch (AL4-1)
Alloy AK9s
Alloy AK9C6 (AK9C6r)
Alloy AK9h (AL4)
Alloy AL1
Designation
| Name | The value |
|---|---|
| Designation GOST Cyrillic | АК7 |
| Designation GOST Latin | AK7 |
| Transliteration | AK7 |
| The chemical elements | - |
Description
The AK7 alloy used: for the manufacture of various ingots and shaped castings by various casting methods (sand casting, investment casting, gravity die casting, pressure); casting of parts of metallurgical equipment.
Note
Aluminum foundry alloy of the system Al-Si-Mg.
Heat-treatable alloy with good strength properties, but with reduced toughness and corrosion resistance.
Technological characteristics of the alloy close to alloy grade Ak7ch.
Standards
| Name | Code | Standards |
|---|---|---|
| Castings with special properties (cast iron and steel) | В83 | KSt 81-033:2009 |
| 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 5.9397-90 |
Chemical composition
| Standard | Mn | Si | Ni | Fe | Cu | Al | Ti | Zn | Zr | Mg |
|---|---|---|---|---|---|---|---|---|---|---|
| GOST 1583-93 | 0.2-0.6 | 6-8 | ≤0.3 | ≤1.1 | ≤1.5 | The rest | - | ≤0.5 | - | 0.2-0.5 |
| KSt 81-033:2009 | ≤0.5 | 6-8 | - | - | ≤0.2 | The rest | ≤0.05 | - | ≤0.01 | 0.2-0.4 |
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 for molding in the mold is ≤ 1.20%, when casting under pressure ≤ 1.30%. The amount of impurities accounted for should be for casting in sand molds and for investment models ≤ 3.10%, casting in chill molds ≤ 3.20%, injection molding ≤ 3.30%.
According to KSt 81-033: 2009, the total content of Zr + Ni ≤ 0.15%.
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%, when casting under pressure ≤ 1.30%. The amount of impurities accounted for should be for casting in sand molds and for investment models ≤ 3.10%, casting in chill molds ≤ 3.20%, injection molding ≤ 3.30%.
According to KSt 81-033: 2009, the total content of Zr + Ni ≤ 0.15%.
Mechanical characteristics
| σB, MPa | d | Brinell hardness number, MPa |
|---|---|---|
| Casting as supplied. Without heat treatment | ||
| ≥127 | ≥0.5 | ≥60 |
| ≥157 | ≥1 | ≥60 |
| ≥147 | ≥0.5 | ≥65 |
| ≥167 | ≥1 | ≥50 |
| Casting. Mode T5: Quenching in water from 530-540 °C (extract 2-7 h) + artificial aging at 145-155 °C (extract 1-3 hours) | ||
| ≥176 | ≥0.5 | ≥75 |
| ≥196 | ≥0.5 | ≥75 |
Description mechanical marks
| Name | Description |
|---|---|
| σB | Limit short-term strength |
| d | Elongation after rupture |
