Products Description
High-Durability Al-Zn Alloy Coated Coil
The composition of Aluzinc steel coil is 55% aluminum, 43.4% zinc, and 1.6% silicon. Because of the high aluminum content, it has excellent corrosion resistance, heat resistance, and oxidation resistance, and is widely used in building roofs, home appliance housings, industrial equipment, automotive parts, and other fields.
- Production process: Through a continuous hot-dip process, the steel plate is immersed in a molten aluminum-zinc alloy liquid to form a uniform and dense coating.
- Core advantages: The corrosion resistance is 2-6 times higher than that of traditional galvanized steel, and it has both the weather resistance of aluminum and the cathodic protection characteristics of zinc.
The difference between anti-fingerprint and non-anti-fingerprint
- Fingerprint Resistant (FR):
A special chemical film (anti-fingerprint liquid) is applied to the aluzinc surface to prevent fingerprints or water stains after touching, while enhancing anti-fouling and corrosion resistance. It is suitable for scenes with high appearance requirements, such as roof panels, warehouses, factory home appliance panels, and high-end decorative materials.
- Non-fingerprint Resistant Treatment:
No surface fingerprint resistance is added, the cost is low, but it is easy to produce oxidation spots due to contact with water vapor or fingerprints, and is mostly used for industrial structural parts or hidden projects with low surface requirements.
Anti-fingerprint treatment types and colors
Anti-fingerprint galvalume steel coils can also be diversified in color, with anti-fingerprint liquid in various colors:
- Color classification:
- Conventional color: transparent color.
- Various colors: yellow, blue, green
Uses and service life of different AZ layers
The weight of the zinc layer of the Al-Zn Alloy Coated Coil(unit: g/m²) directly affects its corrosion resistance and applicable scenarios:
| AZ layer specifications | Typical uses | Service life (neutral environment) |
| ≤AZ70 | Lightweight building materials, home appliance housing | 15-20 years |
| AZ100 | Industrial plants, storage roofs | 20-25 years |
| AZ150 | Coastal areas, highly corrosive environments | 25-30 years |
Note: The actual service life is affected by factors such as environmental humidity, acid rain, and salt spray, and needs to be used in combination with protective coatings.
The main advantages of Aluzinc coils
1. Super corrosion resistance: The aluzinc steel coil forms a dense oxide film, and its salt spray resistance is far superior to that of galvanized sheet.
2. High temperature resistance: It can withstand 300℃ high temperature for a long time, and is suitable for high temperature environments such as chimneys and ovens.
3. Economical and efficient: Under the same lifespan, the cost is 30%-50% lower than that of stainless steel.
4. Convenient processing: Good ductility, supports a variety of processing methods such as shearing, stamping, and welding.
Export packaging and transportation
To ensure the quality of Aluzinc steel coil during ocean transportation, the following professional packaging solutions are used:
- Inner packaging:
The surface is covered with anti-rust paper and plastic film to prevent moisture erosion.
Corner guards are installed on the edges to avoid collision damage.
- Outer packaging:
Steel strapping + wooden pallet reinforcement, in line with ISTA international transportation standards.
Labels indicate specifications, zinc layer, weight, and moisture-proof mark, or according to customer needs.
- Transportation requirements:
The container must be dry and ventilated to avoid mixing with acidic and alkaline substances.
Do not stack.
FAQ
Q1: How long is the service life of an A l-Zn Alloy Coated Coil in coastal areas?
A: If AZ150 zinc layer + fingerprint-resistant coating is used, the service life can reach more than 20 years in a coastal high salt fog environment.
Q2: How to choose between fingerprint-resistant and non-fingerprint-resistant?
A: For beautiful appearance and anti-fouling, choose fingerprint-resistant; for hidden projects or low-cost requirements, choose non-fingerprint-resistant.
Q3: Does it support customized color or coating thickness?
A: Yes, color coating or differentiated zinc layer (such as AZ120, AZ180) can be provided according to customer needs.
Q4: How to prevent moisture during transportation?
A: Place desiccant in the package, and the humidity in the container is controlled below 60%.
Al-Zn Alloy Coated Coil has become an ideal choice for modern industry and construction due to their excellent corrosion resistance, diverse surface treatment, and economy. If you need further technical parameters or sample support, please feel free to contact us!
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