0.13mm Aluminum-zinc-coated Corrugated Sheets
0.13mm aluminum-zinc-coated corrugated sheets are a highly cost-effective, lightweight, and corrosion-resistant material. Their core value lies in the exceptional rust and heat resistance provided by the "aluminum-zinc coating" and the rigidity and drainage afforded by the "corrugated shape." They are best suited for enclosure and shielding applications with low load requirements but demanding long-term resistance to weather corrosion. During selection, a comprehensive evaluation based on the specific usage environment, load requirements, and expected lifespan is essential.
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Product Introduction
Analysis of Primary Applications
1. Construction Field (Most Common)
- Interior cladding for walls and roofs in industrial and warehouse buildings
- Roofing and wall cladding for simple sheds, tool rooms, and garages
- Lining for ventilation ducts
2. Agriculture and Animal Husbandry
- Roofing for livestock and poultry buildings (e.g., chicken coops, pigsties)
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Side enclosures or linings for greenhouse tunnels
3. Household Appliances and Equipment
- Internal partitions and housings for household appliances
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Casings for computer chassis and electrical control boxes
Usage and Selection Considerations
- Strength Considerations
- Environmental Suitability
- Connection and Cutting
- Alternative Options
- Thicker specifications (e.g., 0.35mm, 0.47mm).
- Color-coated aluminum-zinc corrugated sheets
Comparison Table: Aluzinc vs. Galvanized Corrugated Sheets
| Aspect | Aluzinc Corrugated Sheet (55% Al-Zn Alloy Coated) | Galvanized Corrugated Sheet (GI) | Analysis & Verdict |
|---|---|---|---|
| 1. Coating Composition | 55% Aluminum, 43.4% Zinc, 1.6% Silicon | >99% Zinc, with a small iron alloy layer | Fundamental Difference: Aluzinc is an alloy coating combining properties of Al and Zn; GI is a pure zinc coating. |
| 2. Corrosion Resistance | Excellent. 2-6 times the life of GI in most atmospheres. The Al forms a stable oxide barrier, while Zn provides sacrificial protection at cut edges. | Good. Provides sacrificial (cathodic) protection. Protects the steel by corroding itself first. | Aluzinc wins decisively. Superior for coastal, industrial, or high-humidity environments. The benchmark for longevity in thin, economical sheets. |
| 3. Heat Resistance & Reflectivity | Excellent. Serviceable up to ~315°C without discoloration. High solar reflectance (~75%) keeps underlying structures cooler. | Poor. Coating oxidizes and deteriorates quickly above ~65°C. Lower reflectance, leading to more heat absorption. | Aluzinc wins. The clear choice for applications near heat sources (appliances, ducts) or where thermal insulation is a benefit (roofing). |
| 4. Cost | Higher initial cost per square meter compared to GI. | Lower initial cost. The most economical metallic-coated option. | Galvanized wins on upfront cost. However, Aluzinc often offers better life-cycle cost due to its longevity. |
| 5. Appearance | Bright, spangled silver-grey finish with a distinctive crystalline pattern. Looks more "high-tech." | Dull grey, with a more uniform spangle pattern. Traditional industrial look. | Subjective. Aluzinc is often perceived as more premium. Both are suitable for unfinished/utilitarian applications. |
| 6. Formability & Cut Edge Protection | Good. The Al component makes it harder, offering better abrasion resistance. Cut edges are protected by the Zn, but protection is less robust than pure GI. | Very Good. Softer and more malleable. Cut edges have excellent sacrificial protection as the entire coating is Zn. | Trade-off. GI is slightly easier to form. For cut edges: GI provides better sacrificial protection; Aluzinc edges are more vulnerable and benefit more from sealants/paint. |
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