Industrial-grade Galvanized-Aluminum-Magnesium steel coil engineered as a high-performance alternative to traditional hot-dip galvanized coil. Superior corrosion protection and cost efficiency.
Authentic Steel is a leading manufacturer and exporter of premium Galvanized-Aluminum-Magnesium steel coil, serving global steel stockholders, manufacturing plants, and infrastructure contractors. Engineered as the next-generation upgrade to conventional hot-dip galvanized steel, our galvanized-aluminum-magnesium alloy coils provide up to ten times superior corrosion resistance while offering substantial weight savings through reduced required coating thicknesses.
By incorporating magnesium and aluminum into the hot-dip zinc bath, our manufacturing process forms a dense microstructural matrix that resists harsh marine environments, industrial chemical vapors, and underground soil corrosion. The superior surface hardness of Galvanized-Aluminum-Magnesium steel coil minimizes mechanical wear during roll forming, stamping, and transportation, ensuring pristine aesthetic and structural condition upon project installation.
| Specification Parameter | Technical Detail |
| Product Name | Galvanized-Aluminum-Magnesium Steel Coil |
| Thickness | 0.3 mm - 3.5 mm |
| Width | 870 mm - 1250 mm |
| Coating Mass | 30 g/m² - 450 g/m² |
| Coil Weight | 3 - 24 MT |
| Coil Diameter | 508 mm / 610 mm |
| Surface Options | Chromated, Oiled, Anti-Fingerprint (AFP), Uncoated |
| Standard Compliance | ASTM A1046, EN 10346, JIS G3323 |
| Production Capacity | High-capacity modern continuous galvanizing lines |



Available in thickness dimensions from 0.3mm to 3.5mm and widths between 870mm and 1250mm, Authentic Steel delivers fully customizable coil specifications. Coating weights range from 30g/m² to 450g/m², with option for anti-fingerprint treatment, chromated surface, or light oiling. Our galvanized-aluminum-magnesium coils conform strictly to international quality standards including ASTM, EN, and JIS guidelines.
Our product is widely utilized in structural framing, automotive underbody components, highway guardrails, underground cable trays, outdoor electrical cabinets, and roofing systems. By selecting Authentic Steel Galvanized-Aluminum-Magnesium coil, buyers achieve lower total lifecycle maintenance costs and extended operational service lifespan.
Contact our export sales team today for mill test samples and competitive FOB/CIF quotation terms.
Email: bella@authsteel.com / bella@wanlusteel.com
Mobile/Tel/WhatsApp: +86 189 2041 0870