Hot-Dip Zn-Al-Mg Coated Steel
Hot-Dip Zinc-Aluminum-Magnesium Coated Steel Products (Hot-Dip Zn-Al-Mg Coated Steel Products or Metallic Coated Steel Products) offer excellent corrosion resistance, high strength from its steel substrate, and superior formability. These advantages make them a preferred material for buildings, animal husbandry facilities, automotive structural parts, and solar panel mounting systems. This coated steel maintains both its mechanical properties and appearance even when exposed to high humidity, chemically harsh environments, and varying weather conditions.
Properties of Hot-Dip Zn-Al-Mg Coated Steel
Durability
Hot-Dip Zn-Al-Mg Coated Steel Products provide superior durability by resisting corrosion and maintaining their structural integrity even under harsh weather, high moisture, and moderately chemically exposed environments, making them ideal for use in construction, agriculture, and renewable energy applications.
Formability
Hot-Dip Zn-Al-Mg Coated Steel Products offer excellent formability, allowing bending, stamping, and complex shaping operations while maintaining coating integrity and minimizing the risk of cracking or delamination, making them ideal for precisely formed components such as CZ purlins and automotive mounting systems.
Life-Cycle Savings
The enhanced corrosion and weather resistance of Hot-Dip Zn-Al-Mg Coated Steel Products contributes to a longer service life and reduces maintenance requirements. Over time, these advantages can result in significant potential cost savings for the end user.
Available Size of Available Size of Hot-Dip Zn-Al-Mg Coated Steel Products
| Base Type | Thickness (mm) | Width (mm) |
| Cold Rolled Base | 0.20-3.00 | 700-1550 |
| Hot Rolled Base | 1.30-4.50 | 670-1260 (Trimmed) 670-1280(Untrimmed) |
* The tables above show the widest range of product dimensions. For a detailed acceptable order range, please contact our Marketing & CS Division.
Structure of Hot-Dip Zn-Al-Mg Coated Steel Products
Product Specifications of Hot-Dip Zn-Al-Mg Coated Steel Products
| JIS G 3323 | ASTM A1046M | AS 1397 | EN10346 | ||||||||||||||||
| Specifications |
SGMHC SGMH 340 400 400Y 440 440Y 490 | SGMC 570 |
SGMC 400 440 440Y |
SGMCC SGMC 340 400Y | SGMCD1 | Commercial Steel Type A, B, C |
Forming Steel Type A, B |
DDS | Structural Steel Grade 230 255 |
Structural Steel Grade 275 340 (Class 1&4) 380 |
Structural Steel Grade 410 |
Structural Steel Grade 550 |
G2 G3 |
G1 G250 | G300 G350 G450 G500 G550 | DX51D S220GD S250GD | DX52D DX53D | S280GD S320GD S350GD | S550GD |
| Base Steel Thickness (mm) | 1.60 - 2.00 | 0.20 - 2.00 | 0.35 - 2.00 | 0.25 - 2.00 | 0.40 - 2.20 | 0.25-2.20 | 0.40‐2.20 | 0.40‐ 2.20 | 0.25‐2.20 | 0.35‐2.00 | 0.55‐1.60 | 0.20-2.00 | 0.40‐2.20 | 0.25‐2.20 | 0.35‐2.00 | 0.20‐4.50 | 0.20‐1.50 | 0.30-1.10 | 0.20-2.00 |
| Coating Mass |
K08 K10 K12 K14 K18 K20 K22 K25 K27 K35 |
ZMM90 ZMM120 ZMM150 ZMM180 ZMM210 ZMM220 ZMM275 ZMM300 ZMM350 |
ZM90 ZM120 ZM150 ZM180 ZM220 ZM275 ZM350 |
ZM80 ZM90 ZM100 ZM120 ZM130 ZM140 ZM150 ZM160 ZM175 ZM190 ZM200 ZM250 ZM300 ZM310 ZM350 |
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| Remarks | 1. Spangle diameter under 3mm is minimized spangle. 2. Tolerance for thickness, width, flatness, and so on conforms to individual product specification. 3. All products with a thickness of 2.0mm and under can be skin passed. 4. The specification for thicknesses under 1.6mm for hot-rolled base metal according to JIS G 3323 will be the same as for thicknesses 1.6mm and above. 5. The coil inside diameters can be either 508mm or 610mm. The maximum coil outside diameter is 2000mm. 6. Please make inquiries to our Marketing & CS Division for products with special specifications. |
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Surface Finish and Coating Type
| Texture | Coating Type | Production Method | Characteristics | Application | Protection |
 |
Minimized (Zero) Spangle |
Control the composition of pot to achieve minimized spangle. |
Uniform surface and attractive finish after painting. | Gutters and downspouts, ceiling suspension bars, and shutter door rails. | Chromating, Oiled, Resin Coated (Anti-Fingerprint) |
 |
Hot-Dip Zn-Al-Mg Coated Steel | The composition control of the pot is based on the original hot-dip coating of Al-Zn, adding more than 0.2% of magnesium and a trace of silicon to improve corrosion resistance. The rest is zinc. And the Al-Zn-Mg alloy layer is produced. | It has excellent corrosion resistance, edge protection ability, and processability, and can be widely used in various atmospheric corrosive environments. |
Solar photovoltaic system brackets and accessories, automated livestock breeding facilities, cable trays, wire ducts, CZ purlin, patio beams, floor decks, light steel, pipe making, and automotive interior parts. |
Packaging of Hot-Dip Zn-Al-Mg Coated Steel Products
| 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. |
Application of Coated Steel
Animal Husbandry Facility
Hot-Dip Zn-Al-Mg Coated Steel Products are highly suitable for animal husbandry facilities, where humid and ammonia-rich environments can accelerate the corrosion of standard materials. The protective coating resists chemical attack and surface degradation, helping maintain structural hygiene and reducing the need for replacement. The protective coating extends the lifespan of these structures, making these products an ideal material for livestock housing, fencing, and structural components.
Automotive Interior Parts
Hot-Dip Zn-Al-Mg Coated Steel Products offer high strength and excellent formability, making them an ideal choice for automotive interior parts. They enable precise stamping and forming, while their corrosion resistance ensures consistent performance under the temperature and humidity fluctuations inside vehicles, contributing to the development of modern lightweight vehicles.
Solar Mounting Systems
Hot-Dip Zn-Al-Mg Coated Steel Products offer excellent weather resistance and robust mechanical strength, ensuring long-term performance and corrosion protection for solar mounting brackets. Their extended service life reduces maintenance needs and supports sustainable energy solutions.
Structural Construction
Hot-Dip Zn-Al-Mg Coated Steel Products are ideal for structural construction because of their high strength, excellent corrosion resistance, and good formability. It is widely used in CZ purlins, outdoor structural beams, and light-gauge steel villa frames, offering long-term durability and reduced maintenance in outdoor environments.
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