AL7 Aluminum Casting Alloy
Request a Quote for AL7 Alloy
Auremo LLC, 505 Ellicott St, Buffalo, NY 14203, accepts AL7 aluminum-alloy inquiries for delivery across the United States. Call +1 716 910 04 21 or send the standard, drawing and quantity.
Available product forms
- shaped castings subject to drawing review
- small and medium cast components
- machined cast blanks by request
- custom supply forms subject to availability
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 AL7 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
Designation
| Name | The value |
|---|---|
| Designation GOST Cyrillic | АЛ7 |
| Designation GOST Latin | AL7 |
| Transliteration | AL7 |
| The chemical elements | - |
Description
AL7 alloy identification and casting requirements
Searches may use AL7, AL 7 or AL-7 for this casting-alloy designation. The existing technical record notes good machinability, elevated shrinkage and limitations for complex or large castings and service above 200 °C. A quotation should identify the applicable standard, casting method, condition, drawing, tolerances, quantity and inspection requirements.
Alloy AL7 used: for the manufacture of shaped castings sredneshirotnykh parts, small in size; of casting parts, metallurgical engineering (parts of small size, bearing high static and shock loads).
Note
Aluminum foundry alloy system Al-Cu. Alloy AL7 in the hardened mortar type, and also at the expense of dispersed precipitates phase CuAl2. AL7 alloy has a high shrinkage (1.4 percent), prone to hot cracks and is therefore not recommended for casting in a metal mold.
Advantages: Satisfactory casting properties and good machinability.
Disadvantages: Low casting properties inhibit its use for complex and large workpieces. You should not use the alloy at temperatures above 200 °C.
Standards
| Name | Code | Standards |
|---|---|---|
| Thermal and thermochemical treatment of metals | В04 | OST 1 90088-80 |
| Castings from non-ferrous metals and alloys | В84 | OST 24.916.01-71 |
Chemical composition
| Standard | Mn | Fe | Cu | Al | Ti | Zn | Sn | Mg |
|---|---|---|---|---|---|---|---|---|
| OST 24.916.01-71 | ≤0.1 | ≤1 | 4-5 | The rest | ≤0.2 | ≤0.2 | ≤0.01 | ≤0.03 |
According to OST 24.916.01-71, the iron content is indicated for sand casting, for melted models, die casting and die casting. The amount of impurities to be accounted for should be for sand casting, for melted models, die casting, die casting ≤ 2.20%.
Mechanical characteristics
| σB, MPa | d | Brinell hardness number, MPa |
|---|---|---|
| Casting. Mode T4: Quenching in water from 530-540 °C (2-6 h exposure) | ||
| ≥196 | ≥6 | ≥60 |
| ≥206 | ≥6 | ≥60 |
Description mechanical marks
| Name | Description |
|---|---|
| σB | Limit short-term strength |
| d | Elongation after rupture |
Physical characteristics
| Temperature | r, кг/м3 | l, Вт/(м · °С) |
|---|---|---|
| 20 | 2800 | 1386 |
A description of the physical symbols
| Name | Description |
|---|---|
| l | Coefficient of thermal conductivity |
| С | Specific heat |
