1. Scratch Resistance: Coated sheets often suffer from surface corrosion, primarily due to unavoidable scratches during processing. However, ZAM sheets possess exceptional scratch-resistant qualities. This feature significantly reduces the chances of damage, thus prolonging their lifespan. Tests show that ZAM sheets outperform their competitors, showing scratch resistance at loads exceeding 1.5 times that of galvanized-5% aluminum and over three times that of traditional galvanized and zinc-aluminum sheets. This advantage results from the greater hardness of their coating.
2. Weldability: While ZAM plates may have slightly lower weldability compared to hot-rolled and cold-rolled sheets, effective welding techniques can still ensure strength and functionality. Repairing welded areas with Zn-Al type coatings can yield results comparable to the original coating.
3. Paintability: ZAM's paintability aligns with that of galvanized-5% aluminum and zinc-aluminum-silicon coatings. This capability allows for painting, which enhances both aesthetics and durability.
4. Irreplaceability: Certain circumstances render zinc-aluminum-magnesium products indispensable:
- In outdoor settings requiring thick specifications and durable surface coatings—such as highway guardrails that previously depended on bulk galvanization—ZAM enables continuous hot-dip galvanization. This innovation benefits products like solar equipment supports and bridge components.
- In regions like Europe, where road salt usage is prevalent, alternative coatings on vehicle underbodies lead to rapid corrosion. Hence, zinc-aluminum-magnesium plates are vital for seaside villas and similar constructions.
- Specialized environments demanding acid resistance, such as poultry barns and feeding troughs, necessitate the use of zinc-aluminum-magnesium due to the corrosive nature of poultry waste.
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