What is 8079 Aluminum Foil?
8079 aluminum foil belongs to the 8000 series aluminum alloy foil. It uses high-purity aluminum as the matrix and is solid-solution strengthened by the addition of iron and silicon. This specific composition significantly improves the mechanical properties of the material while maintaining excellent ductility.
Compared with ordinary aluminum foil, 8079 aluminum foil features higher tensile strength, a lower pinhole rate, and superior deep-drawing formability. Therefore, it is widely used in high-end fields such as food packaging, pharmaceutical packaging, and lithium battery pouch (soft pack) materials.
Worthwill is a professional supplier of 8079 aluminum foil, providing a wide range of surface treatments and specification options, supporting global export, and offering customized production according to customer requirements.
8079 Aluminum Foil Technical Specifications
| Parameter | Range |
| Thickness | 0.006 mm – 0.20 mm |
| Width | 100 mm – 1,700 mm |
| Delivery Form | Coil |
| Applicable Standards | GB/T 3198, ASTM B479, QQ-A-1876, EN 546-2, EN 485-2, EN 573-3 |
Surface Treatment Options
Worthwill provides a variety of surface treatments to meet the functional and aesthetic requirements of different industries.
8079 Mill Finished Foil
Mill-finished 8079 aluminum foil retains the natural silver-white metallic luster after rolling. The surface is flat and uniform without any extra coating.
This is the most common surface condition, suitable for applications requiring high surface cleanliness, such as food packaging, pharmaceutical packaging, and lithium battery aluminum-plastic film. Mill-finished foil can be directly used for subsequent processing like laminating, printing, and gluing.
Main Features:
- Clean and smooth surface with an extremely low pinhole rate; reaches Grade A in the water wettability test.
- Non-toxic and odorless; passes bacteria and mold tests, meeting food-contact hygiene requirements.
- Silver-white luster, highly receptive to printing and pattern processing.
8079 Color Coated Foil
8079 Coated aluminum foil is made by applying a functional organic coating to the foil substrate, which is then cured by high-temperature baking to provide both decoration and protection. Worthwill offers three mainstream coating systems—PE, PVDF, and Nano PVDF—suitable for building insulation, roof waterproofing, exterior wall insulation, and more.
- PE Coating (Polyester):Cost-effective, highly flexible with rich colors. Ideal for interior or moderate outdoor applications. (Thickness: 15–35 μm)
- PVDF Coating:Premium durability with a 20+ years lifespan. Excellent resistance to harsh weather, UV, and fading. Perfect for exterior architectural facades. (Thickness: 25–45 μm)
- Nano PVDF Coating:Upgraded PVDF with a top Nano layer. Features 5H hardness, superior self-cleaning, anti-dust, and antibacterial properties. Best for high-end, maintenance-free buildings.
Available Colors:
Standard colors include White, Black, Blue, Green, Terracotta, etc. Customization based on RAL or Pantone color samples provided by the customer is also available.
8079 Embossed Foil
Embossed 8079 aluminum foil uses special rollers to press regular or irregular textures onto the surface, enhancing aesthetics while improving the material's rigidity and anti-slip properties.
Common patterns include: Stucco, Checkered, Five Bar, Pebble, and custom designs. Embossing does not affect the basic barrier properties of the foil, and it can be further coated or laminated.
Main Features:
- Rich surface textures with significant decorative effects.
- Increased material stiffness, enhancing compressive and anti-slip performance.
- Suitable for insulation material facings, decorative architectural panels, industrial packaging, etc.
- Supports standard and custom patterns.
Other Surface Treatments
In addition to the above, Worthwill also offers:
- Anodized:Generates a dense oxide layer via electrochemical treatment. Salt spray resistance exceeds 1,000 hours. Suitable for aerospace and high-end architectural decoration.
- Metallized (Gold/Silver Plated):Used in special applications like satellite thermal control, precision electronics, and premium packaging.
- Single Bright / Double Bright:Can be selected based on lamination processes and printing requirements.
Material Temper
8079 aluminum foil is available in multiple tempers to meet various processing and performance requirements.
| Temper | Description | Recommended Applications |
| O (Fully Annealed) | Fully recrystallized soft state, highest elongation, best plasticity. | Cold-formed blister packaging, lithium battery pouch foil. |
| H14 | Strain-hardened to half-hard, balanced strength and ductility. | Household foil, food packaging. |
| H16 | Intermediate between H14 and H18. | General packaging foil. |
| H18 | Fully hard state, highest strength. | Pharmaceutical lidding foil, bottle caps. |
| H19 | Ultra-hard state. | High-strength industrial uses. |
| H22 | Strain-hardened and partially annealed. | Food packaging, food containers. |
| H24 | Strain-hardened and partially annealed (medium). | Food packaging, beverage seals. |
| H26 | Strain-hardened and partially annealed (high strength). | Industrial packaging. |
| H28 | Strain-hardened and partially annealed (very high strength). | Special industrial uses. |
8079 Aluminum Foil Chemical Composition
| Element | Content (Weight %) |
| Al | ≥ 98.1 (Remainder) |
| Fe | 0.70 – 1.30 |
| Si | 0.05 – 0.30 |
| Cu | ≤ 0.05 |
| Zn | ≤ 0.10 |
| Others (Each) | ≤ 0.05 |
| Others (Total) | ≤ 0.15 |
The synergistic effect of iron and silicon is the core of 8079 aluminum foil's performance. Iron refines the grain and increases strength, while silicon improves casting fluidity and enhances corrosion resistance.
8079 Aluminum Foil Physical & Mechanical Properties
| Property | Metric Value | Imperial Value |
| Density | 2.72 g/cm³ | 0.0983 lb/in³ |
| Elastic Modulus | 69 GPa | 10,000 ksi |
| Tensile Strength (UTS) | 100 – 170 MPa | 14.5 – 24.7 ksi |
| Yield Strength (0.2%) | 23 – 120 MPa | 3.3 – 17.4 ksi |
| Elongation at Break | 1.5% – 34% (Depending on temper) | — |
| Shear Modulus | 26 GPa | 3,770 ksi |
| Poisson's Ratio | 0.33 | 0.33 |
| Thermal Conductivity | 210 – 237 W/(m·K) | 130 BTU/h·ft·°F |
| Coefficient of Thermal Expansion | 23.6 × 10⁻⁶/K | — |
| Electrical Conductivity | Approx. 58% IACS | — |
| Melting Point (Solidus) | 640 °C | 1,184 °F |
| Melting Point (Liquidus) | 650 °C | 1,202 °F |
8079 vs. 8011 vs. 8021 Aluminum Foil
| Comparison Item | 8079 Aluminum Foil | 8011 Aluminum Foil | 8021 Aluminum Foil |
| Total Si + Fe | Approx. 0.75%–1.60% | Approx. 1.5% | Approx. 1.0% |
| Contains Mn/Mg | No | Yes | Minor amount |
| Strength | Medium-High | High | Medium |
| Elongation | High (Best) | Low | Medium |
| Puncture Resistance | Excellent | Fair | Good |
| Typical Applications | Battery pouches, highly sealed pharma foil, high-fat food packaging | Pharma lidding, bottle caps, cable foil | Blister pharma foil, food packaging |
| Relative Price | Higher | Medium | Medium |
8079 aluminum foil's comprehensive performance in elongation and puncture resistance is the most outstanding, which is the core reason it cannot be easily replaced in lithium battery aluminum-plastic films and high-end pharmaceutical blister packaging.
Application Areas
Food Packaging
8079 aluminum foil excels in food packaging. A 0.009 mm thick foil has a Water Vapor Transmission Rate (WVTR) as low as 0.1 g/(m²·24h) and an Oxygen Transmission Rate (OTR) not exceeding 0.5 cm³/(m²·24h·0.1 MPa), effectively extending food shelf life.
Main applications:Food Trays, Beverage Caps, Beverage Seals, Aluminum Foil Food Bags, Retort Packaging, and Aseptic Liquid Packaging.
Retort packaginguses a 0.015 mm thick foil composite layer that remains perfectly sealed even after sterilization at 121°C for 30 minutes, complying with the GB 4806.7-2016 food contact material hygiene standard.
Pharmaceutical Packaging
8079 aluminum foil is a core substrate in pharma packaging. Its high elongation (O temper usually ≥ 10%) makes it highly suitable for cold-stamping (cold-forming) processes.
Main applications:
- PTP Foil:Standard blister lidding foil for pills and capsules. The 8079 + H18 combination provides optimal sealing performance.
- Cold-Formed Pharma Foil:Used for high-end pure aluminum blister packaging (OPA/Al/PVC structure).
- Tropical Blister Packaging:Acts as the outer cold-stamped foil, providing the highest level of moisture and light barrier protection.
A 0.02 mm thick pharmaceutical foil meets the YBB00152002 standard, with strict heavy metal limits (Lead ≤ 0.01 mg/kg, Cadmium ≤ 0.005 mg/kg).
Lithium Battery Pouch Aluminum-Plastic Film
With the popularization of New Energy Vehicles (NEVs), the demand for high-performance foil for battery pouches continues to grow, and 8079 is the preferred material.
Common thickness for battery pouches is 0.035 – 0.055 mm. After surface treatment, contact resistance is ≤ 5 mΩ·cm², and cycle life can exceed 2,000 times. Its high ductility ensures the film won't crack during the encapsulation process, while its excellent barrier properties prevent electrolyte leakage and moisture intrusion.
Industrial Insulation & Construction
In industrial insulation, 8079 foil laminated with insulation paper can reach a dielectric strength of 40 kV/mm (used in transformer windings). Cable shielding using 0.1 mm foil provides shielding efficiency over 90 dB.
In construction, 8079 color-coated foil is widely used for:
- Roof Waterproofing:Laminated with bitumen to form waterproof membranes for flat and pitched roofs.
- Roof Insulation:Reflectivity ≥ 85%. When composited with glass wool, it can reduce roof surface temperature by 8–12°C.
- Exterior Wall Insulation:PVDF-coated foil provides outstanding UV and corrosion resistance for all climates.
- Interior Insulation & Soundproofing:Laminated with rock wool or fiberglass for thermal and acoustic benefits.
Electronic & Industrial Fields
A 0.05 mm thick 8079 foil can undergo etching to form precision circuits (line width accuracy ± 0.01 mm) for Flexible Printed Circuits (FPC).
With a thermal conductivity of 237 W/(m·K), it can be used with ceramic substrates to lower semiconductor operating temperatures by 15–20°C, making it highly valuable in electronics heat dissipation.
Aerospace
Anodized foil used for aircraft skin passes 1,000+ hours of salt spray testing. Satellite thermal control systems use 0.03 mm gold-plated foil, achieving a solar absorptance as low as 0.1 and infrared emittance as high as 0.8. Rocket fuel tank insulation uses multi-layer foil structures, dropping thermal conductivity to 0.0001 W/(m·K) in vacuum conditions.
Production Process & Quality Control
Worthwill strictly enforces quality control in every step of 8079 aluminum foil production.
- Casting & Rolling:Billet grain size from the roll-casting method is controlled at 30–50 μm, and the cold-rolling reduction rate must exceed 95% to ensure final performance.
- Annealing:Intermediate annealing is done at 340–380°C for 4–6 hours (recrystallization rate > 85%). Final annealing uses stage-controlled temperature: first at 250°C to eliminate processing stress, then raised to 400°C for complete recrystallization, achieving optimal ductility for O temper.
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Quality Inspection:Every batch undergoes:
- 100% Visual Inspection (pinholes, wrinkles, surface defects)
- Water Wettability Test (Target: Grade A)
- Mechanical Testing (Tensile strength, elongation)
- Microbiological Testing (Bacteria, mold)
- Heavy Metal Dissolution Test (For food and pharma-grade products)
- Storage & Packaging:Stored under 65% humidity to prevent sticking. Export packaging uses standard seaworthy wooden boxes lined with moisture-proof film. Coils can be packed "Eye to Wall" or "Eye to Sky". A standard 20ft container holds 20–25 tons.
Applicable Standards
Worthwill’s 8079 aluminum foil products comply with the following international standards:
| Standard System | Standard Number |
| China Standard | GB/T 3198-2010 |
| USA Standard | ASTM B479, QQ-A-1876 |
| European Standard | EN 546-2, EN 485-2, EN 573-3 |
| International Standard | UNS A98079, EN AW-8079 |
| Russian Standard | Provided upon request |
| Japanese Standard | Provided upon request |
Why Choose Worthwill?
Henan Worthwill Industry Co., Ltd. is a professional aluminum foil raw material supplier. We focus on providing high-quality 8079 aluminum foil substrates to global customers, without involving post-processing such as laminating, printing, or gluing.
Our Core Advantages:
- Complete Specifications:Thickness ranges from 0.006 to 0.20 mm, width from 100 to 1,700 mm. Multiple tempers and surface treatments available.
- Flexible MOQ:Supports small batch customization (minimum order of 3 tons) as well as large bulk procurements.
- Diverse Surface Treatments:Mill finished, PE coated, PVDF coated, Nano PVDF coated, and Embossed options available.
- Complete Certifications:We provide quality documents complying with GB, ASTM, EN, GOST, and JIS standards.
- Global Export Experience:Products have been successfully exported to dozens of countries including Vietnam, India, Italy, Spain, France, Germany, Brazil, South Korea, Turkey, and Indonesia.
- Guaranteed Delivery:Efficient production scheduling. Lead time for standard specs is 7–25 days; custom products are scheduled on demand.
To learn more about detailed specifications or to get a quote, please feel free to contact the Worthwill team. We will provide a professional reply within 12 hours.
