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Hot-dip Zn-Al-Mg alloy coated steel, commonly known as ZAM steel, is an advanced coating product featuring a ternary alloy of zinc, aluminum, and magnesium. The magnesium content promotes the formation of a stable protective film, ensuring exceptional corrosion resistance. Compared to traditional coatings like GI and Aluzinc, ZAM alloy-coated steel offers superior corrosion resistance, formability, and wear resistance. It is ideal for diverse applications, including automotive, HVAC, solar photovoltaics, agriculture, and more.
| Standard | ASTM / JIS / DIN / GB / EN |
| Grade | - Japan (JIS): JIS SGHX (e.g., SGH340X, SGH400X) |
| - China (GB): GB ZAM | |
| - EU (EN): EN Durable grades (e.g., EN DX54D+AZ) | |
| Material | - Carbon Steel: Base steel is a low-carbon grade, coated with a Zinc-Aluminum-Magnesium alloy (e.g., Zn: ~90%, Al: ~10%, Mg: ~2-3%). |
| Sizes | Thickness: 0.3-6.0mm |
| Width: 600-1500mm |
3-6 times more durable than standard galvanized steel.
Mg-rich oxides self-seal minor scratches and cut edges.
1. Severe Environments: Coastal building materials and highway guardrails.
2. Agricultural & Mining Equipment: Exposed structural parts.
