A brief introduction to 8079 Aluminum Foil
The 8079 aluminum foil is primarily tailored for the broad packaging needs of pharmaceuticals and cosmetics, boasting superior performance compared to pure aluminum foil. What’s more, our manufacturing capabilities allow for bespoke product creation to meet the unique specifications of our clientele.
The synergy between the 8079 alloy and the H18 temper yields unparalleled performance in pharmaceutical foil applications. Besides its pharmaceutical prowess, Alloy 8079 foil finds extensive utility in the food packaging sector, beer labels, household foil, bottle caps, and more. Optimal outcomes are realized with thickness ranging between 10 to 200 microns and temper designations such as H14, H18, among others.
Introduction to 8079 Aluminum Foil
The chemical composition of 8079 aluminum foil primarily consists of aluminum along with specific alloying elements that enhance its properties. Here’s a detailed breakdown of its typical composition:
Properties and characteristics of 8079 aluminum foil
8079 aluminum foil is a type of aluminum alloy that offers a range of properties and characteristics making it suitable for various applications, particularly in packaging and insulation.
Chemical Composition of 8079 Aluminum Foil
| Element | Symbol | Typical Range (%) |
|---|---|---|
| Aluminum | Al | 90.0% minimum |
| Iron | Fe | 0.5% to 1.0% |
| Silicon | Si | 0.1% to 0.5% |
| Copper | Cu | 0.1% to 0.3% |
| Manganese | Mn | 0.1% to 0.3% |
| Magnesium | Mg | 0.1% to 0.5% |
| Zinc | Zn | 0.1% to 0.3% |
| Lithium | Li | 0.1% to 0.5% |
The specific composition of 8079 aluminum foil can vary slightly based on the manufacturer and the intended application. However, the above ranges represent the typical chemical makeup that contributes to its desirable properties in packaging and other uses.
Property of 8079 aluminum foil
| Property Category | Property | Description |
|---|---|---|
| Mechanical Properties | Tensile Strength | 100 to 200 MPa |
| Yield Strength | 70 to 150 MPa | |
| Elongation | Up to 10% or more | |
| Hardness | Varies based on processing | |
| Physical Properties | Density | Approximately 2.7 g/cm³ |
| Thermal Conductivity | Good thermal conductivity | |
| Electrical Conductivity | High but slightly lower than pure aluminum | |
| Corrosion Resistance | Oxide Layer | Forms a protective layer enhancing corrosion resistance |
| Chemical Resistance | Resistant to many chemicals; susceptible to strong alkalis and acids | |
| Barrier Properties | Moisture Barrier | Excellent moisture barrier properties |
| Oxygen Barrier | Effective at preventing oxygen transmission | |
| Thermal Properties | Melting Point | Approximately 660°C (1220°F) |
| Thermal Expansion | Low thermal expansion coefficient | |
| Formability and Fabrication | Workability | Easily formed, stamped, or drawn |
| Welding and Joining | Can be joined using conventional techniques |
Manufacturing Process of 8079 Aluminum Foil
8079 aluminum foil is known for its excellent strength, lightweight, and barrier properties, making it highly suitable for packaging applications, especially in food and pharmaceutical industries. The manufacturing process involves several key steps, from raw material preparation to final product inspection. Here’s a detailed overview of the process:
1. Raw Material Preparation
- Aluminum Ingots: The process begins with high-purity aluminum ingots, usually sourced from reliable suppliers. These ingots are typically made from aluminum scrap and are melted to form a homogeneous alloy.
- Alloying Elements: For 8079 aluminum foil, specific alloying elements may be added to enhance properties such as strength, ductility, and corrosion resistance.
2. Melting
- Furnace Melting: The aluminum ingots are placed in a melting furnace. The furnace operates at temperatures around 660°C (1220°F) to melt the aluminum.
- Degassing: During melting, the molten aluminum is treated with inert gases to remove impurities and gases that may cause defects in the final product.
3. Casting
- Continuous Casting: The molten aluminum is cast into a large slab or roll using a continuous casting process. This method helps create a uniform thickness and composition.
- Cooling: The cast aluminum is slowly cooled to ensure it retains its desired properties.
4. Hot Rolling
- Initial Rolling: The cast slab is heated and then passed through a series of rollers in a hot rolling mill. This reduces its thickness and elongates the material.
- Thickness Reduction: The rolling process may involve multiple passes to achieve the desired thickness, typically around 0.3 mm to 1 mm for foil production.
5. Cold Rolling
- Further Thickness Reduction: After hot rolling, the aluminum undergoes cold rolling to achieve the final foil thickness, which can be as thin as 6 microns.
- Work Hardening: Cold rolling increases the hardness and strength of the aluminum foil through work hardening.
Huawei Aluminum Foil Production
6. Annealing
- Heat Treatment: The cold-rolled aluminum foil is subjected to an annealing process, where it is heated in a controlled environment. This step reduces internal stresses and improves ductility, making the foil easier to work with.
7. Surface Treatment
- Cleaning: The aluminum foil is cleaned to remove any surface oxides or contaminants.
- Coating: Depending on the application, the foil may be coated with a protective layer to enhance its barrier properties, such as anti-corrosion or heat-resistant coatings.
8. Slitting
- Cutting to Size: The large rolls of aluminum foil are slit into narrower widths according to customer specifications.
9. Quality Control
- Inspection: Throughout the manufacturing process, quality control measures are implemented to ensure that the foil meets industry standards for thickness, strength, and surface quality.
- Testing: Samples may undergo various tests, including tensile strength, elongation, and barrier property assessments.
10. Packaging
- Final Packaging: The finished aluminum foil is carefully packaged to prevent damage during transportation and storage. It is usually rolled onto cores and wrapped in protective materials.
The manufacturing process of 8079 aluminum foil involves multiple stages, including raw material preparation, melting, casting, rolling, annealing, surface treatment, slitting, quality control, and packaging. Each step is crucial in ensuring that the final product meets the required specifications for performance and quality, making it suitable for a wide range of applications in packaging and other industries.
Features of 8079 Aluminum Foil
8079 aluminum alloy foil is an industrial-grade aluminum material that exhibits the following characteristics:
- Composition: 8079 aluminum alloy primarily consists of aluminum (Al) with small amounts of other alloying elements such as iron (Fe), silicon (Si), copper (Cu), manganese (Mn), magnesium (Mg), etc. The specific ratios of these alloying elements can vary depending on different manufacturers and application requirements.
- Strength and Hardness: Compared to pure aluminum, 8079 aluminum alloy foil offers higher strength and hardness, making it more suitable for applications requiring better mechanical properties.
- Corrosion Resistance: Aluminum naturally forms a dense oxide layer on its surface, providing excellent corrosion resistance. 8079 aluminum alloy foil inherits this characteristic, maintaining stability in various environments and resisting corrosion effectively.
- Electrical and Thermal Conductivity: Despite the addition of alloying elements, 8079 aluminum alloy foil retains good electrical and thermal conductivity, making it suitable for certain applications in the electronics and electrical industries.
- Processability: 8079 aluminum alloy foil is easily processed through various cold working methods such as rolling, stamping, and bending, allowing it to be shaped into different forms and sizes to meet diverse usage needs.
- Lightweight: As an aluminum alloy, 8079 retains the lightweight advantage of aluminum, which is crucial for reducing transportation costs and enabling lighter product designs.
- Recyclability: Aluminum is a fully recyclable material, and 8079 aluminum alloy foil is no exception. This contributes to reduced resource waste and environmental impact.
Pachaged 8079 Aluminum Foil
Applications of 8079 Aluminum Foil
Due to its excellent mechanical properties, corrosion resistance, electrical and thermal conductivity, as well as its lightweight and processability, 8079 aluminum foil has a wide range of applications across various industries. Below are some specific application areas:
Aluminum foil for food packaging
- Food and Beverage Packaging:
- 8079 aluminum foil is commonly used for food packaging materials, such as wrappers for candies, cookies, chocolates, etc., as it effectively blocks light, moisture, and oxygen, extending the shelf life of food products.
- It is also used for the inner lining of beverage cans and cap seals, ensuring the safety of products during storage and transportation.
- Pharmaceutical Packaging:
- In the pharmaceutical industry, 8079 aluminum foil is used for blister packs, aluminum-plastic composite films, and other medicinal packaging, protecting drugs from environmental factors like humidity, temperature, and light.
- Electronics and Electrical Appliances:
- The good electrical and thermal conductivity of 8079 aluminum foil makes it an ideal choice for heat sinks and electromagnetic shielding materials in electronic components.
- It is also used in manufacturing battery casings, printed circuit board (PCB) substrates, and more, providing excellent electrical insulation and physical protection.
- Building Materials:
- Aluminum foil can be part of insulating materials used in building exteriors and roofs, helping to reduce heat transfer and improve the energy efficiency of buildings.
- It can also serve as decorative material, thanks to its bright surface and ease of cleaning, suitable for both interior and exterior decoration.
- Automotive Industry:
- In the automotive manufacturing sector, 8079 aluminum foil is used to make lightweight body parts, radiator cores, air conditioning ducts, and more, contributing to vehicle weight reduction and improved fuel efficiency.
- Additionally, it can be used to wrap internal wiring harnesses, providing electromagnetic interference (EMI) shielding.
- Home Appliances:
- 8079 aluminum foil can be used in the manufacture of home appliances such as refrigerators, air conditioners, microwave ovens, etc., as heat dissipation components or internal structural parts.
- Other Special Applications:
- 8079 aluminum foil may also be used in certain specialized applications, such as backsheet materials for flexible photovoltaic panels, reflectors for solar water heaters, and more.
8079 Aluminum Foil Application
Please note that some of the applications mentioned above might be adjusted based on the specific characteristics of 8079 aluminum alloy, and its application scope could further expand with technological advancements and the development of new materials. For specific application selection, it is advisable to refer to the technical specifications and usage guidelines provided by the manufacturer.
Comparing 8079 with Other Aluminum Foil Alloys:
Let’s compare 8079 with some common aluminum foil series:
| Feature | 8079 Aluminum Foil | 1xxx Series (e.g., 1235) | 3xxx Series (e.g., 3003, 3004) | 5xxx Series (e.g., 5052) | 8xxx Series (Other, e.g., 8011) |
|---|---|---|---|---|---|
| Key Alloying Elements | Primarily Iron (Fe) and Silicon (Si) | High Purity Aluminum (99%+) | Manganese (Mn) | Magnesium (Mg) | Varies depending on specific alloy |
| Strength | Moderate | Low | Moderate | High | Moderate to High |
| Elongation (Ductility) | High (Excellent formability, deep drawing) | High | Moderate to High | Moderate | Moderate |
| Burst Strength | Good | Low | Moderate | Good to High | Good |
| Corrosion Resistance | Good | Excellent | Good | Good to Excellent | Good |
| Weldability | Fair to Good | Excellent | Good | Good | Good |
| Thickness Range | Typically thinner gauges (6 microns and above) | Very thin gauges common | Wide range of gauges | Wide range of gauges | Wide range of gauges |
| Typical Applications | Pharmaceutical blister packs, food container lids, specialized packaging | Flexible packaging, laminations, capacitors | Household foil, food containers, heat exchangers | Structural components, signage, beverage cans | Various industrial applications, container foil |
| Cost | Generally mid-range to higher due to specific properties | Generally lower due to purity | Mid-range | Mid-range to higher depending on alloy | Mid-range |
| Key Advantage for 8079 | Superior formability and burst strength for demanding packaging. | Excellent corrosion resistance, high purity | Good balance of strength, formability, and cost | High strength and good corrosion resistance | Specific properties tailored for industrial uses |
Here’s a more detailed look at the comparisons:
- Compared to 1xxx Series: 1xxx series foils (like 1235) are known for their high purity and excellent corrosion resistance. They have good elongation but lower strength and burst strength compared to 8079. They are often used in flexible packaging where high purity is essential.
- Compared to 3xxx Series: 3xxx series foils (like 3003 and 3004) offer a good balance of strength, formability, and cost. They are commonly used for household foil and food containers. While they have good elongation, 8079 generally exhibits higher elongation and better burst strength, making it more suitable for applications requiring deep drawing or resistance to tearing.
- Compared to 5xxx Series: 5xxx series foils (like 5052) are known for their high strength and good corrosion resistance. Their elongation is generally lower than 8079. They are used in more structural applications. 8079 prioritizes formability over ultimate strength compared to this series.
- Compared to Other 8xxx Series (e.g., 8011): The 8xxx series is broad, but 8011 is a common alloy often used for container foil. While 8011 aluminum foil can offer good strength and barrier properties, 8079 specifically excels in applications needing high formability and burst strength, such as pharmaceutical blister packs. The alloying elements and their percentages differ, leading to these distinct properties.
8079 aluminum foil stands out due to its exceptional elongation and good burst strength, making it ideal for applications demanding high formability and resistance to tearing. While other aluminum foil alloys offer their own unique advantages in terms of strength, corrosion resistance, or cost, 8079’s specific properties cater to specialized packaging needs, particularly in the pharmaceutical and food industries. When selecting an aluminum foil, it’s crucial to consider the specific requirements of the application to choose the alloy with the most suitable characteristics.
Casting production process and its introduction
The purpose of melting and casting is to produce alloys with satisfactory composition and high purity of melt, so as to create favorable conditions for casting alloys of various shapes.
Melting and casting process steps: batching --- feeding --- melting --- stirring after melting, slag removal --- pre-analysis sampling --- adding alloy to adjust the composition, stirring --- refining --- static Setting——Guide furnace casting.
Hot rolling production process and its introduction
- 1. Hot rolling generally refers to rolling above the metal recrystallization temperature;
- 2. During the hot rolling process, the metal has both hardening and softening processes. Due to the influence of deformation speed, as long as the recovery and recrystallization process is too late, there will be a certain work hardening;
- 3. The recrystallization of the metal after hot rolling is incomplete, that is, the coexistence of recrystallized structure and deformed structure;
- 4. Hot rolling can improve the processing performance of metals and alloys, reduce or eliminate casting defects.
- 1. The casting and rolling temperature is generally between 680°C and 700°C. The lower the better, the stable casting and rolling line usually stops once a month or more to re-stand. During the production process, it is necessary to strictly control the liquid level of the front tank to prevent low liquid level;
- 2. Lubrication uses C powder with incomplete combustion of gas for lubrication, which is also one of the reasons for the dirty surface of casting and rolling materials;
- 3. The production speed is generally between 1.5m/min-2.5m/min;
- 4. The surface quality of products produced by casting and rolling is generally relatively low, and generally cannot meet products with special physical and chemical performance requirements.
- 1. Cold rolling refers to the rolling production method below the recrystallization temperature;
- 2. There will be no dynamic recrystallization during the rolling process, and the temperature will rise to the recovery temperature at most, and the cold rolling will appear in a work hardening state, and the work hardening rate will be large;
- 3. The cold-rolled sheet and strip have high dimensional accuracy, good surface quality, uniform structure and performance, and products in various states can be obtained with heat treatment;
- 4. Cold rolling can roll out thin strips, but at the same time, it has the disadvantages of high energy consumption for deformation and many processing passes.
- 1. Finishing is a processing method to make the cold-rolled sheet meet the customer's requirements, or to facilitate the subsequent processing of the product;
- 2. The finishing equipment can correct the defects produced in the hot rolling and cold rolling production process, such as cracked edge, oily, poor plate shape, residual stress, etc. It needs to ensure that no other defects are brought into the production process;
- 3. There are various finishing equipments, mainly including cross-cutting, slitting, stretching and straightening, annealing furnace, slitter, etc.
Casting and rolling process
Casting and rolling process: liquid metal, front box (liquid level control), casting and rolling machine (lubrication system, cooling water), shearing machine, coiling machine.
Cold rolling production process
Introduction to finishing production process
Aluminum alloy has the characteristics of low density, good mechanical properties, good processing performance, non-toxic, easy to recycle, excellent electrical conductivity, heat transfer and corrosion resistance, so it has a wide range of applications.
Aerospace: used to make aircraft skins, fuselage frames, girders, rotors, propellers, fuel tanks, wall panels and landing gear struts, as well as rocket forging rings, spacecraft wall panels, etc.
Aluminum alloy used for aerospace
Transportation: used for car body structure materials of automobiles, subway vehicles, railway passenger cars, high-speed passenger cars, doors and windows, shelves, automotive engine parts, air conditioners, radiators, body panels, wheels and ship materials.
Traffic application
Packaging: All-aluminum pop cans are mainly used as metal packaging materials in the form of thin plates and foils, and are made into cans, lids, bottles, barrels, and packaging foils. Widely used in the packaging of beverages, food, cosmetics, medicines, cigarettes, industrial products, medicines, etc.
Packaging application
Printing: Mainly used to make PS plates, aluminum-based PS plates are a new type of material in the printing industry, used for automatic plate making and printing.
PS printing
Architectural decoration: aluminum alloy is widely used in building structures, doors and windows, suspended ceilings, decorative surfaces, etc. due to its good corrosion resistance, sufficient strength, excellent process performance and welding performance.
Aluminum alloy construction application
Electronic products: computers, mobile phones, refrigerator shells, radiators, etc.
Electronic product application
Kitchen supplies: aluminum pots, aluminum basins, rice cooker liners, household aluminum foil, etc.
Kitchen application
Packaging Of Aluminum Sheet/Coil
Every detail of packaging is where we pursue perfect service. Our packaging process as a whole is as follows:
Lamination: clear film, blue film, micro-mucosal, high-mucosal, laser cutting film (2 brands, Novacell and Polyphem);
Protection: paper corner protectors, anti-pressure pads;
drying: desiccant;
Tray: fumigated harmless wooden tray, reusable iron tray;
Packing: Tic-tac-toe steel belt, or PVC packing belt;
Material Quality: Completely free from defects such as white rust, oil spots, rolling marks, edge damage, bends, dents, holes, break lines, scratches, etc., no coil set.
Port: Qingdao or other ports in China.
Lead time: 15-45 days.
Aluminum sheet/plate packaging process
Aluminum coil packaging process
F: Are you a manufacturer or a trader?
Q: We are a manufacturer, our factory is at No.3 Weier Road, Industrial Zone, Gongyi, Henan, China.
F: What is the MOQ for ordering the product?
Q: Our MOQ is 5 tons, and some special products will have a minimum order quantity of 1 or 2 tons.
F: How long is your lead time?
Q: Generally our lead time is about 30 days.
F: Do your products have quality assurance?
Q: Yes, if there is a quality problem with our products, we will compensate the customer until they are satisfied.
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