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China Zinc-Aluminum-Magnesium Coil Suppliers | Superior Corrosion Resistance from Factory
📊 Parameters & Typical Value
| Thickness | 0.3mm – 3.0mm |
| Width | 600mm – 1500mm |
| Coating Weight | 60 – 275 g/m² (Double-sided) |
| Salt Spray Test | 1000 – 3000 hours (Red rust) |
🔖 Types
Standard ZAM
Zn-based with Al (1–3%) and Mg (0.1–1%).
High-Al ZAM (AZ)
Higher Al (5–11%) and Mg (1–3%).
Super ZAM
Enhanced corrosion resistance with optimized alloy ratios.
⭐ Characteristics
- 🛡️Superior corrosion resistance — 5–10× longer than galvanized steel in salt spray tests.
- 🔧Self-healing — Magnesium forms a protective layer on scratches.
- ✅Excellent formability for stamping and bending.
💡 Advantages
- 📈Long lifespan, lower maintenance costs.
- 🌿Eco-friendly — reduces zinc resource consumption.
- 🌊Resists harsh environments (marine, industrial areas).
🧪 Material Composition
Base Material:
Low-carbon steel (e.g., DX51D, DX53D)
Coating:
Zn + Al + Mg (e.g., Zn-90%, Al-6%, Mg-4%)
🏭 Applications
🏗️
Construction
Roofing, wall panels, garage doors
🏠
Appliances
Refrigerator / AC casings
🚗
Automotive
Chassis parts
🌾
Agriculture
Greenhouse frames, silos
🌍 Key Export Markets
🌏 SE Asia
Thailand, Singapore, Malaysia
🕌 Middle East
Saudi Arabia, UAE, Oman, Egypt, Kuwait, Jordan
🌍 Africa
South Africa, Tanzania, Algeria, Ghana, Nigeria
🌎 South America
Peru, Colombia, Ecuador, Chile
Process Advantages and Material Selection Guidelines
Advanced high-speed rolling and controlled cooling technologies ensure dimensional precision (±0.1 mm) and microstructural homogeneity, supporting downstream processes like drawing and heat treatment. Material selection must comply with industry standards (ASTM, GB/T, JIS), prioritizing carbon content, elongation, and surface defect control.
As a global wire rod supplier, we offer a full range of solutions for stranded wire, cold heading standards and specialty alloy wire rod, enabling our customers to reduce costs and increase efficiency. If you are interested in our company and solutions, please contact us by email or call us directly for a customized catalog and technical support!
❓ Frequently Asked Questions
QWhat is ZAM steel and how does it differ from regular galvanized steel?
ZAM steel is a zinc-aluminum-magnesium alloy-coated steel that offers 5–10× greater corrosion resistance compared to conventional galvanized (zinc-only) steel. The addition of aluminum and magnesium significantly enhances the durability and longevity of the protective coating.
QWhat coating weights are available for ZAM steel?
ZAM steel is available with double-sided coating weights ranging from 60 to 275 g/m², allowing customers to select the appropriate level of protection based on their specific application and environmental conditions.
QWhat does "self-healing" mean in the context of ZAM steel?
When ZAM steel is scratched or cut, the magnesium in the coating reacts with moisture to form a dense, stable protective oxide layer over the exposed area. This self-healing property prevents rust from spreading, making ZAM steel ideal for applications subject to mechanical damage.
QWhich industries commonly use ZAM steel?
ZAM steel is widely used across construction (roofing, wall panels, garage doors), home appliances (refrigerator and AC casings), automotive (chassis components), and agriculture (greenhouse frames and silos) due to its combination of formability, corrosion resistance, and cost efficiency.
QWhat international standards does ZAM steel comply with?
ZAM steel products can be manufactured to comply with major international standards including ASTM (American), GB/T (Chinese), and JIS (Japanese). Specific grade selection depends on carbon content requirements, elongation targets, and surface quality specifications.
QCan ZAM steel be used in marine or highly corrosive environments?
Yes. ZAM steel is specifically engineered to withstand harsh environments including marine and industrial areas. Its salt spray test performance of 1,000–3,000 hours (before red rust) demonstrates excellent suitability for high-humidity and salt-laden conditions.