AK7 Aluminum-Silicon Casting Alloy
Request a Quote for AK7 Alloy
Auremo LLC, 505 Ellicott St, Buffalo, NY 14203, handles AK7 aluminum-alloy inquiries for U.S. projects. Call +1 716 910 04 21 or send the applicable standard, casting requirements, drawing and quantity.
Available product forms
- ingot or remelt stock subject to specification
- sand and investment castings by drawing review
- gravity-die and pressure castings by request
- machined cast parts subject to feasibility review
Information to include in your request
Please provide the governing standard or grade, product form, dimensions and tolerances, quantity, delivery ZIP code and required documentation. Pricing and availability are confirmed individually for each inquiry.
Frequently asked questions
How is the price for AK7 aluminum casting alloy confirmed?
Prices are provided on request and depend on the exact grade or standard, dimensions, tolerances, quantity, documentation and freight requirements.
Can non-standard dimensions be requested?
Yes. Include a drawing or dimensional requirements. Availability and manufacturing or sourcing feasibility are confirmed with the quotation.
What is the typical delivery time in the United States?
Typical U.S. delivery is 2–3 weeks after order confirmation. The final lead time and delivery terms are stated in the quotation for the selected material, quantity and destination.
Related materials and references
AL7 aluminum casting alloy · 1440 aluminum-lithium alloy · Duralumin products
Designation
| Name | The value |
|---|---|
| Designation GOST Cyrillic | АК7 |
| Designation GOST Latin | AK7 |
| Transliteration | AK7 |
| The chemical elements | - |
Description
AK7 alloy identification and casting requirements
AK7, AK 7 and AK-7 searches can be ambiguous. This page covers the aluminum foundry-alloy designation in the existing technical record. Include the governing standard, casting process, heat-treatment condition, part drawing, dimensions and tolerances, inspection or certificate requirements, quantity and destination ZIP code.
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 |
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 |
