Aluminum Zinc Color Coated Steel Sheet - Mill Direct
Supplier's customization ability
- Drawing-based customization
- Sample-based customization
- Full customization
Minimum order quantity: 1 ton
Shipping total: To be negotiated
- Lead time:
- confirmed with the quotation
- Packaging:
- standard export packing
- Samples:
- available on request
Product details
Technical Specifications of Aluminum Zinc Color Coated Steel Sheet
| Property | Parameter | Description |
|---|---|---|
| Product Name | Aluminum Zinc Color Coated Steel Sheet | Pre-painted Galvalume steel sheet with polymer coating on surface |
| Material Grade | TDC51D+AZ / TDC52D+AZ / TS280GD+AZ | Equivalent to ASTM A755M, JIS G3322 CGLCC / CGLS, EN 10169 |
| Standard Compliance | ASTM A755M / JIS G3322 / EN 10169 / GB/T 14978 | Meets international standards for prepainted aluminum-zinc alloy coated steel |
| Chemical Composition | C ≤0.12%, Mn ≤0.60%, P ≤0.10%, S ≤0.045%, Si ≤0.50% | Base metal composition; Al-Zn coating alloy: 55% Al, 43.4% Zn, 1.6% Si |
| Coating Mass | AZ50 / AZ100 / AZ150 (g/m²) | Total both-side coating weight; AZ150 = 150 g/m² aluminum-zinc alloy |
| Paint Coating Thickness | Top coat: 15–25 μm; Primer: 5–7 μm; Back coat: 5–15 μm | Polyester (PE), High Durability Polyester (HDP), PVDF available |
| Tensile Strength | 270–560 MPa | Per ASTM A755M / JIS G3322; varies by grade (e.g., TS280GD: ≥360 MPa) |
| Yield Strength | 220–480 MPa | Minimum yield strength per corresponding grade standard |
| Elongation | ≥16% (A80mm) | Longitudinal direction; per JIS G3322 / EN 10169 test method |
| Thickness Range | 0.14 mm – 1.50 mm | Base metal thickness excluding coating; tolerance per EN 10143 / ASTM A924M |
| Width Range | 600 mm – 1,500 mm | Slit coil or sheet width; custom widths available upon request |
| Length / Coil Weight | Coil: 3–10 MT; Sheet: 1,000–6,000 mm | Inner diameter 508 mm or 610 mm; outer diameter ≤1,500 mm |
| Surface Finish | Smooth / Embossed / Matte / High Gloss | RAL color customizable; pencil hardness ≥2H; T-bend ≤2T |
| Application | Roofing, wall cladding, home appliances, garage doors, HVAC ducts | Widely used in construction, automotive, and household appliance industries |
| Certification | ISO 9001, SGS, BV, CE | Mill test certificate (MTC) per EN 10204 3.1 available |
| Packaging | Eye-to-sky or eye-to-wall coil; waterproof paper + steel strip strapping | Suitable for sea freight; fumigation-free wooden pallet for sheets |
| MOQ | 25 MT per order | Mixed specifications acceptable; sample order negotiable |
Aluminum Zinc Color Coated Steel Sheet - Mill Direct
Aluminum zinc color coated steel sheet stands as one of the most versatile and durable coated steel products available in today's construction and manufacturing markets. Combining the structural integrity of a high-strength steel substrate with a precisely engineered aluminum-zinc alloy coating and a polymer-based color finish, this material delivers outstanding anti-corrosion properties, superior weather resistance, and long-term aesthetic appeal. It finds extensive application in roofing panels, wall cladding systems, home appliances, automotive components, and industrial enclosures. With a base coating typically composed of 55% aluminum, 43.4% zinc, and 1.6% silicon by mass, the alloy layer provides a self-healing barrier that significantly outperforms conventional galvanized coatings. The additional color coating layer — available in polyester (PE), silicon-modified polyester (SMP), or polyvinylidene fluoride (PVDF) finishes — further enhances UV resistance and surface durability, making aluminum zinc color coated steel sheet a preferred choice for architects, engineers, and procurement specialists worldwide seeking mill-direct pricing and reliable supply chains.
What is Aluminum Zinc Color Coated Steel Sheet?
Aluminum zinc color coated steel sheet is a composite flat-rolled steel product manufactured by applying an aluminum-zinc alloy coating (commonly known as Galvalume or AZ coating) onto a cold-rolled steel substrate, followed by a chromate passivation layer, a primer coat, and a topcoat of colored organic polymer. The result is a product that combines metallic corrosion protection with decorative surface functionality, serving critical roles in both structural and aesthetic building applications.
Aluminum Zinc Color Coated Steel Sheet Manufacturing Process
Production begins with cold-rolled steel coils fed through a continuous hot-dip coating line, where the strip is immersed in a molten aluminum-zinc bath at approximately 600°C to achieve AZ coating weights ranging from AZ50 to AZ150 g/m². After cooling and surface treatment, the coated strip passes through a continuous coil coating line where primer and topcoat layers are applied via precision roll coaters and cured in high-temperature ovens at 220–250°C peak metal temperature, ensuring consistent film thickness of 15–25 µm.
Aluminum Zinc Color Coated Steel Sheet Technical Specifications
Standard offerings conform to ASTM A755, EN 10169, and GB/T 12754 specifications. Typical parameters include: base steel yield strength of 250–550 MPa; total coil thickness of 0.30–1.20 mm; coil width of 600–1,250 mm; AZ coating weight of 75–150 g/m² (double-side); topcoat dry film thickness of 15–25 µm (PE) or 25–35 µm (PVDF); pencil hardness of 2H minimum; T-bend flexibility of 0T–2T; and salt spray resistance exceeding 1,000 hours per ASTM B117. Color options span RAL and custom palettes with gloss levels from 10 to 80 GU at 60°.

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