7072 Aluminum Foil Jumbo Rolls
7072 aluminum foil belongs to the 7000 series aluminum alloys, with aluminum (Al) as the base metal and zinc (Zn) as the main alloying element. It is a typical corrosion-resistant aluminum alloy foil. The most prominent characteristics of this material are its excellent corrosion resistance and sacrificial anode protection effect, making it widely used as a cladding layer for aluminum alloy materials.
Description
Yutwin New Materials is committed to providing high-quality aluminum foil solutions to the global market, combining durability, safety, and cost-effectiveness. Our product range covers everything from standard household aluminum foil to industrial jumbo rolls and specialty aluminum foils. In addition to standard specifications, we also offer customized solutions based on customers’ technical requirements, including tailored thickness, width, surface treatment, and packaging options.
Features of 7072 Aluminum Foil
- Excellent Corrosion Resistance
Designed especially for atmospheric and marine environment. Forms a stable oxide layer that protects surfaces and enhances durability.
- Low Electrode Potential
Has a relatively low electrode potential that makes it suitable as a protective cladding on other alloys (sacrificial protection).
- Good Heat Transfer & Thermal Properties
High thermal conductivity makes it suitable for heat-exchanger and heat-dissipation applications (e.g., HVAC fin stock).
- Good Surface Quality
Foils are produced with smooth, defect-free surfaces (no oil spots, scratches, etc.) — important for consistent heat exchange and corrosion behavior.
- Formability & Workability
Available in soft (O) and cold-worked (H) tempers to balance ductility and strength, allowing manufacturing into thin foils and fin shapes.
- Strength & Mechanical Properties
While not as strong as structural aluminum alloys, 7072 foil offers adequate strength and durability for its intended roles in heat-exchanger components.
Specifications
| Item | Specification |
|---|---|
| Alloy | 7072 |
| Aluminum Series | 7000 Series |
| Main Elements (Abbreviation) | Al, Zn |
| Typical Chemical Composition | Al: Balance; Zn: 0.8–1.3%; Fe, Si ≤ 0.5% |
| Temper | O (Soft, most common) |
| Thickness Range | 6 – 200 μm |
| Common Thickness | 20 / 30 / 50 μm |
| Width | Customizable (commonly ≤ 1250 mm) |
| Surface Finish | Bright / Matte |
| Supply Form | Coil |
Common Applications of 7072 Aluminum Foil
- Automotive Heat Exchangers
Used as cladding for radiators, condensers, and evaporators to enhance overall corrosion resistance.
- Industrial Heat Exchange Equipment
Suitable for industrial cooling systems, air-conditioning heat exchangers, and other equipment requiring high corrosion resistance.
- Aluminum Alloy Cladding Materials
Commonly clad with alloys such as 3003, 3005, and 6061 to provide sacrificial anode protection.
- Refrigeration & HVAC Systems
Applied in heat exchange components of commercial refrigeration and HVAC systems.
- Other Anti-Corrosion Applications
Ideal for aluminum composite materials used in humid, salt-spray, or corrosive environments.
