Zn-Al-Mg Coated Steel Coil

Product Features and Selling Points

Zinc-aluminum-magnesium coating coil Zinc-aluminum-magnesium coating is a hot-dip coating with excellent corrosion resistance, wear resistance and processability through the action of aluminum and magnesium, and can be widely used in various fields. Zinc-alum..

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Product Description
Parameters and Process
Color options available

Product features

Shougang aluminum-zinc-magnesium coated smooth coils have a 30-year warranty and are highly corrosion-resistant and wear-resistant; they are widely used in home appliances, automobiles, doors and windows, and other industries.

Characteristics

1) Planar corrosion resistance

Test sample: Under the same experimental conditions, the weight of pure zinc coating is 100g/m2, and the weight of zinc-aluminum-magnesium coating is 70 g/m2. The zinc-aluminum-magnesium coating product shows better planar corrosion resistance.

(2)Cut corrosion resistance

Test samples: Pure zinc coating weight is 100g/m2, zinc-aluminum-magnesium coating weight is 70g/m2, pure zinc-coated steel plate has red rust on the cut, while zinc-aluminum-magnesium coated steel plate has no red rust

3) Forming corrosion resistance

Test sample: Coating weight is 70g/m2 Test method: The sample is cupped with a height of 4mm and a cyclic corrosion test is performed according to ISO 1197-1 method A

4) Weight reduction characteristics

Zinc-aluminum-magnesium coating has better corrosion resistance than pure zinc coating, and a lower coating weight is required to achieve the same corrosion resistance effect.

5)Friction characteristics

Test conditions: Pulling speed is 15 mm/s, positive pressure is 5kN, zinc-aluminum-magnesium coating has better wear resistance.

High corrosion-resistant hot-dip aluminum-zinc-magnesium coated product

Zn-Al-Mg Coated Steel

A next-gen material with a Zn-Al-Mg alloy coating, delivering superior corrosion,chemical,scratch resistance. Maintains peak performance in harsh environments, prolonging service life while enhancing resource efficiency.

The synergistic effect of aluminum and magnesium enhances wear resistance, formability, and surface durability, enabling direct substitution of GI products without altering existing manufacturing, assembly, or painting processes.

Substrate:	Steel coil
Grades:	DX51/52/53/54D+AZM, S280GD+AZM, S350GD+AZM, S550GD+AZM, SECC, etc.
Composition:	91% Zinc, 6% Aluminum, 3% Magnesium
Thickness Range:	0.5 mm to 2.2 mm
Width Range:	50mm to 1500mm
Diameter:	Φ508 mm， Φ610 mm
Coating Thickness	4 0-350 g/㎡
Coil Weight:	3-8 ton
Paint Options :	Polyester(PE) , HDP, SMP, PVDF
Color Options:	RAL color ( custom color available)
Paint Thickness:	Top paint:10-35 μm , Back paint: 5-25 μm
Surface Finish:	Glossy, matte, or textured
Custom:	Available in custom sizes, coatings, and finishes.

GI VS ZAM coating test

DX54D substrate	zinc coating (both sides)	Zn-Al-Mg coating (both sides)
Coating thickness	100g/m²	70g/m²
Surface corrosion resistance (1 week)	Yes	No.
Surface corrosion resistance (2 weeks)	Yes	No.

The corrosion resistance mechanism of Zn-Al-Mg coatings

1. Magnesium (Mg)promotes the formation of a stable, dense protective film – simonkolleite (Zn₅(OH)₈Cl₂·H₂O)** – on the coating surface, enhancing corrosion resistance.

2. At cut edges, Mg mobility enables continuous formation of compact protective films over time. In contrast, GI coatings** develop porous deposits, while Al-Zn coatings fail to cover exposed steel substrates at edges.

Aluminum-Zinc-Magnesium Coated Coils, Featuring a 30-year warranty, these coils exhibit high corrosion resistance and wear resistance

Appliances:automotive components, doors/windows, and related industries.

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