● Galvanized Aluminium-Magnesium Steel Coil is a high-performance metallic-coated material. It features a dense alloy coating composed of zinc, aluminum, magnesium, and silicon, applied to the steel substrate via a hot-dip process. This coating provides corrosion resistance far superior to conventional galvanized products, offering exceptional cut-edge protection. A dense protective layer even forms on cut edges, effectively delaying red rust formation. With good formability, paint adhesion, and an extended service life, it is widely used in PV mounting systems, agricultural and storage facilities, automotive components, and harsh industrial environments, serving as an upgraded solution replacing traditional galvanized steel.
● Aluminium-Zinc-Magnesium coated steel coil is a new generation of high-corrosion-resistant coated coil. Based on traditional Galvalume (55% Al-Zn), it adds Magnesium (Mg) and Silicon (Si), achieving revolutionary improvements in corrosion resistance, especially cut-edge protection and scratch resistance.
Coating Composition - Core Difference
Aluminium (Al): ~90% or ~85% (Depends on proprietary patents)
Zinc (Zn): ~5% - 10%
Magnesium (Mg): 1.5% - 3% - Key element, significantly enhances corrosion resistance, especially cut-edge protection
Silicon (Si): ~1% - 5% - Improves coating uniformity and adhesion.
Coating Weight/Thickness - Core Parameter
Unit: g/m² (Total both sides)
Common Designations:
AS 70 (35/35)
AS 100 (50/50)
AS 120 (60/60) - Common specification
AS 150 (75/75) - Preferred for high-performance building applications
AS 180 (90/90)
Performance Comparison: The corrosion resistance of AS150 is generally superior to traditional Galvalume AZ180, and even superior to pure galvanized GI Z275.
| Category | Parameter | Conventional Value/Range | Notes |
| Substrate | Steel Grade | DX51D+AM | General construction |
| Substrate | Thickness | 0.4mm -- 0.8mm | |
| Substrate | Width | 1000MM, 1250MM, 1200MM | |
| Coating | Coating Mass | AM120 -- AM180 | AM150 offers the best performance-cost balance |
| Coating | Key Element | Mg content 1.5-3% | Core difference from traditional Galvalume |
| Coating | Treatment | Chromium-free passivation | |
| Coating | Finish | Spangle-free | Standard configuration |
| Performance | Yield Strength | 140 - 300 MPa (DX51D） | |
| Performance | Tensile Strength | 270 -- 500 MPa (DX51D) | |
| Performance | Elongation | ≥ 20% (DX51D) |
Reliable steel solutions for various industries, customized to your needs.
If you have any questions, inquiries, or concerns, our highly skilled and dedicated team of Aoguan professionals is always at your disposal, ready to offer prompt and reliable assistance and support.
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