Zinc Aluminum-Magnesium Steel
Explore Hengze’s premium prepainted aluminum coils featuring durable coatings, vibrant color finishes, and excellent formability for roofing, cladding, and facade systems.
Zinc Aluminum-Magnesium Steel Manufacturer
Zinc-Aluminum-Magnesium (ZAM) Coated Steel is a next-generation alloy-coated steel product that offers exceptional corrosion resistance, edge protection, and weatherability. Developed as a superior alternative to traditional galvanized (GI) and galvalume (AZ) steel, ZAM-coated steel is ideal for high-humidity, high-salinity, and industrial applications.
As a leading ZAM coated steel manufacturer and supplier, HengZe Steel provides high-performance zinc-aluminum-magnesium alloy coated steel coils and sheets to meet the most demanding needs of the global construction, automotive, and energy markets.
ZAM steel is coated with a precise composition of zinc (Zn), aluminum (Al), and magnesium (Mg), forming a durable and self-healing protective layer. This composition allows for long-term resistance to red rust and corrosion—even at cut edges, drilled holes, and scratches.
✅ Key Features:
Outstanding Corrosion Resistance
Up to 20 times better than conventional galvanized steel in salt spray tests, especially effective for outdoor and coastal environments.Excellent Cut-Edge Protection
Magnesium content enables the formation of a dense and stable protective film on exposed areas.Superior Formability & Weldability
Suitable for deep drawing, bending, stamping, spot welding, and roll forming.Eco-Efficient Coating
Reduces required coating thickness while maintaining or exceeding performance standards, minimizing zinc runoff.Extended Service Life
Especially ideal for structures requiring long-term durability and minimal maintenance.
| Specification | Range / Options |
|---|---|
| Composition | Zinc (Zn)90–93%, Aluminum (Al)5–6%, Magnesium (Mg)1–3% |
| Thickness | 0.20 – 2.50 mm |
| Width | 600 – 1500 mm |
| Coating Weight (ZAM) | 30 – 150 g/m² |
| Surface Finish | Skin-passed, oiled, chromated |
| Coil ID | 508 mm / 610 mm |
| Substrate | Cold Rolled Steel / Hot Rolled Steel Base |
| Delivery Form | Coil / Sheet / Slit Strip |
Application Fields
Construction & Building
Ideal for roof panels, wall cladding, steel framing, purlins, and solar structures.
Automotive & Transport
Used in chassis components, battery enclosures, and underbody parts for corrosion resistance.
Farming & Agriculture
Applied in poultry houses, silos, fencing, and greenhouse frames for long-term durability.
Energy & Utilities
Perfect for solar mounts, wind turbine frames, and outdoor electrical enclosures or boxes.
HVAC & Industry Use
Suitable for cable trays, ventilation ducts, and industrial-grade HVAC steel components.
Why Choose Hengze Steel as Your ZAM Steel Manufacturer?
Reliable ZAM Steel Manufacturer
Decades of experience in the production of alloy-coated steel products with ISO-certified processes.Global Export-Oriented Supplier
Products shipped to 60+ countries with professional export packaging and documentation.Custom Processing Capabilities
Precision slitting, cutting-to-length, surface treatments, and coating customization.Strict Quality Assurance
Full compliance with JIS, ASTM, and EN standards. Third-party testing available upon request.Competitive Pricing & Fast Delivery
Optimized production lines and robust logistics ensure cost-effectiveness and lead-time efficiency.
| Type | Yield Strength (MPa) | Tensile Strength (MPa) | Coating Weight (g/m²) |
|---|---|---|---|
| Commercial Steel (CS) A/B/C | 170–270 | 270–410 | 30 to 150 |
| Structural Steel (SS) SS33–SS70 | 230–485 | 400–620 | 60 to 275 |
| Grade Code | Base Steel Type | Yield Strength (MPa) | Tensile Strength (MPa) | Coating Weight (g/m²) |
|---|---|---|---|---|
| DX51D-ZM | Cold Rolled Steel | ≥ 140 | 270–410 | 30 to 150 |
| DX52D-ZM | Cold Rolled Steel | ≥ 180 | 270–430 | 30 to 150 |
| DX53D-ZM | Cold Rolled Steel | ≥ 230 | 270–470 | 60 to 180 |
| DX54D-ZM | Cold Rolled Steel | ≥ 270 | 320–500 | 80 to 210 |
| Grade Code | Base Steel Type | Yield Strength (MPa) | Tensile Strength (MPa) | Coating Weight (g/m²) |
|---|---|---|---|---|
| S250GD-ZM | Cold Rolled Steel | 250 | 270–410 | K06 (~60) to K25 (~250) |
| S350GD-ZM | Cold Rolled Steel | 350 | 400–520 | K06 to K25 |
| S450GD-ZM | Cold Rolled Steel | 450 | 520–620 | K12 (~120) to K35 (~350) |
Frequently Asked Questions (FAQ)
Zinc-Aluminum-Magnesium (ZAM) coated steel offers up to 10–20 times better corrosion resistance than traditional galvanized steel. It provides superior cut-edge protection and a longer service life, especially in coastal and industrial environments.
ZAM steel is widely used in construction, automotive parts, solar racking systems, agricultural structures, and HVAC equipment due to its durability, formability, and resistance to harsh weather conditions.
Yes. ZAM coated steel has excellent formability and weldability. It is suitable for deep drawing, bending, stamping, and spot welding without causing coating flake-off or surface damage.
The price of ZAM steel depends on thickness, coating weight, substrate type, and order quantity. As a direct ZAM steel manufacturer, HengZe offers competitive factory prices and custom quotations based on your specifications.
HengZe's ZAM coated steel complies with JIS G3323, EN 10346, and ASTM A1046, ensuring high-quality and globally recognized performance standards.
Get a Quote Today
At Hengze Steel, we specialize in supplying high-quality Prepainted Aluminum Coils engineered for durability, weather resistance, and excellent surface finishes.
Whether you need detailed product specifications, a competitive quote, or expert technical support, our experienced team is here to provide reliable and customized solutions for your project.
👉 Or email us at sales@hengzesteel.com.
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