Hot-Dip 5%/ 55% Al-Zn Alloy Coated Steel Products
Hot-Dip 5%/ 55% Aluminum-Zinc Alloy Coated Steel Products (Metallic Coated Steel Products) provide exceptional corrosion resistance, high structural strength, and excellent formability, ensuring long-lasting protection and maintaining their integrity during bending, stamping, or forming processes. Hot-Dip 5%/ 55% Al- Zn Alloy Coated Steel Products are widely used in various applications, including building structures, automotive parts, flooring, and agriculture. Manufactured in compliance with international standards, these products are a trusted choice for industries seeking performance, reliability, and extended service life.
Corrosion Resistance
Hot-Dip 5%/ 55% Al- Zn Alloy Coated Steel Products feature protective coatings composed of aluminum-zinc alloys. These coatings form a barrier that protects the steel substrate from oxidation and rust, particularly in harsh environments such as coastal, humid, or chemical exposure areas. Typical applications include building facades, roofing, guardrails, and agricultural structures.
Formability
The coatings on Hot-Dip 5%/ 55% Al- Zn Alloy Coated Steel Products offer excellent adhesion and ductility, allowing the steel to be bent, stamped, or cut without cracking or flaking. This superior formability makes the products ideal for applications requiring complex shapes, such as automotive panels, appliance housings, and formed components, thereby improving production efficiency and reducing manufacturing costs.
High Strength
Hot-Dip 5%/ 55% Al- Zn Alloy Coated Steel Products are manufactured from high-quality steel substrates that provide exceptional tensile strength and structural integrity. They can withstand heavy loads, strong winds, and extreme weather conditions while maintaining shape and stability, making them ideal for structural and load-bearing applications in construction and industrial sectors.
| Product | Base Type | Thickness (mm) | Width (mm) |
| Hot-Dip 5% Al-Zn Alloy Coated Steel | Cold Rolled Base | 0.20-2.00 | 700-1280 |
| Hot Rolled Base | 1.30-4.50 | 670-1280 (Untrimmed) 670-1260(Trimmed) |
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| Hot-Dip 55% Al-Zn Alloy Coated Steel | Cold Rolled Base | 0.16-2.00 | 700-1538 |
* The tables above show the widest range of product dimensions. For a detailed acceptable order range, please contact our Marketing & CS Division.

| Specifications | JIS G 3317 | ASTM A875/A875M | AS 1397 | EN10346 | |||||||||||||||||||
| SZACC | SZACD1 | SZAC340 SZAC400 SZAC440 SZAC490 | SZAHC SZAH340 SZAJ400 SZAJ440 SZAH490 | SZAC570 | Commercial Steel Type A, B, C |
Forming Steel Type A, B |
DDS | Structural Steel Grade 230 255 275 340 | Structural Steel Grade 550 | G1 | G2 | G3 | G250 G300 G350 | G450 | G500 | G550 | DX51D | DX52D | DX53D | S220GD S250GD S280GD S320GD S350GD | S420GD S450GD | S550GD | |
| Base Steel Thickness (mm) | 0.2 ‐ 1.5 | 0.3 ‐ 1.1 | 0.3 ‐ 1.25 | 1.3 ‐ 4.5 | 0.75 ‐ 2.0 | 0.20-4.50 | 0.20‐1.50 | 0.30‐ 1.10 | 0.3‐4.50 | 0.75-2.0 | 0.20‐4.50 | 0.20‐1.50 | 0.30‐1.10 | 0.20‐4.50 | 0.60‐1.75 | 1.00‐1.75 | 0.75‐2.00 | 0.20‐4.50 | 0.20‐1.50 | 0.30-1.10 | 0.30-4.50 | 1.55-4.50 | 0.75-2.00 |
| Coating Mass |
Y08 Y10 Y12 Y14 Y18 Y20 Y22 Y25 Y27 Y30 Y35 |
ZGF90 ZGF135 ZGF180 ZGF225 ZGF275 ZGF350 |
ZA90 ZA135 ZA180 ZA225 ZA275 ZA350 |
ZA095 ZA130 ZA185 ZA200 ZA255 ZA300 |
ZM120 ZM130 ZM140 ZM150 ZM160 ZM175 ZM190 ZM200 ZM250 ZM300 ZM310 ZM350 |
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| Remarks |
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| Specifications | JIS G 3321 | ASTM A792M | AS 1397 2011 | EN10346 | |||||||||||
| SGLCD SGLCDD |
SGLCC |
SGLC400 SGLC440 SGLC570 |
CS Type A B C FS |
DS | SS Grade 230 255 275 340 550 |
G3 | G1 G2 |
G250 G300 G350 G450 G500 G550 | DX51D | DX52D DX53D |
S220GD S250GD S280GD S320GD S350GD |
S550GD | |||
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Base Steel Thickness (mm) |
0.30-1.50 | 0.16-2.00 | 0.20-2.00 | 0.16-2.00 | 0.30-1.50 | 0.20-2.00 | 0.30-1.50 | 0.16-2.00 | 0.20-2.00 | 0.16-2.00 | 0.30-1.50 | 0.20-2.00 | 0.20-2.00 | ||
| Coating Mass Regular Spangle |
AZ70 AZ90 AZ120 AZ150 AZ170 AZ185 |
AZM100 AZM110 AZM120 AZM150 AZM165 AZM180 |
AZ150 |
AZ100 AZ150 AZ185 |
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| Remarks |
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| Texture | Coating Type | Production Method | Characteristics | Application | Protection |
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Hot-Dip 5% Al-Zn Alloy Coated Steel | The coating alloy comprises about 5% aluminum, mischmetals, and balanced Zn. | Good formability, excellent paintability, and superior corrosion resistance. | CZ purlin, gutters, door frame, auto parts, vending machines, and guardrails. | Chromating, Oiled, Resin Coated (Anti-Fingerprint), or Green Treatment (Environmentally Friendly Anti-Fingerprint) |
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Hot-Dip 55% Al-Zn Alloy Coated Steel | The coating alloy comprises about 55% Al, 1.5% Si, and balanced Zn. | Uniform and pleasing appearance, and good adhesion. | Ducts, auto parts, electrical appliances, vending machines, refrigerators, ovens, and pre-painting. |
| Protective Wrapping and Labeling | Reinforcement and Strapping | Export Palletizing |
| The steel coil is wrapped with kraft paper or a waterproof liner, and edge protectors are applied to both the inner and outer circumferences to prevent impact damage. A label is then affixed to ensure product traceability and facilitate easy identification during handling and transportation. | The entire coil is securely bound with steel straps to maintain structural integrity and prevent shifting during transport. This reinforcement also helps protect the packaging from loosening and exposure to moisture. | The coil is positioned upright on wooden pallets to ensure stability and make forklift handling easier, which helps minimize the risk of damage during international shipping. |
Hot-Dip 5%/ 55% Al- Zn Alloy Coated Steel Products are ideal for grain bins, silos, and other agricultural storage structures due to their exceptional resistance to moisture and chemical corrosion. These coatings protect the steel from both internal and external corrosion, helping preserve structural integrity and ensure long-lasting performance in harsh farming environments.
Hot-Dip 5%/ 55% Al- Zn Alloy Coated Steel Products are used in vehicle frames, body panels, and underbody components, where corrosion protection and strength are critical. They offer enhanced formability, making them suitable for complex automotive parts while reducing the risk of cracking or coating damage during manufacturing.
Hot-Dip 5%/ 55% Al- Zn Alloy Coated Steel Products are commonly used in roofing, wall panels, framing, and structural supports. Their exceptional corrosion resistance, particularly in exposed or coastal environments, extends the lifespan of buildings. These coatings effectively resist oxidation and weathering, ensuring long-term durability, minimal maintenance, and lasting aesthetic appeal.
Hot-Dip 5%/ 55% Al- Zn Alloy Coated Steel Products are ideal materials for floor decking, offering a combination of high structural strength, corrosion resistance, and long-term durability. These products are widely used in commercial, industrial, and high-rise construction projects where load-bearing performance and resistance to environmental degradation are critical.