Zinc-Aluminum-Magnesium (ZAM) Coated Steel Coil / Sheet / Plate

Huaxiao-Alloy’s Zinc-Aluminum-Magnesium (ZAM) coating leverages a ternary alloy (Zn + 5-11% Al + 2-3% Mg) to deliver 10-15X superior corrosion resistance vs. traditional galvanized steel. The patented self-repairing mechanism forms dense protective films over scratches and cut edges – revolutionizing structural longevity in marine, automotive, and infrastructure projects.

1. PRODUCT SPECIFICATIONS & DIMENSIONS OF ZINC-ALUMINUM-MAGNESIUM (ZAM)

FormThickness RangeWidth RangeCoating Mass (g/m²)Surface Structure
Coil0.3–3.0 mm (±0.03mm)800–1,600 mm (±0.5mm)AZ100/AZ150/AZ200Minimized spangle (M), Regular (R)
Sheet0.5–4.0 mm (±0.05mm)1,000–2,200 mm (±1mm)AZ135/AZ180Skin-passed (S), Anti-fingerprint (AF)
Plate3.0–20.0 mm (±0.4%)1,500–3,500 mmAZ150Pickled & oiled (PO)

Coating Class Reference (EN 10346):

  • AZ100: 100g/m² (≈20µm)
  • AZ150: 150g/m² (≈30µm)
  • AZ200: 200g/m² (≈40µm)

2. BASE MATERIAL ENGINEERING OF ZINC-ALUMINUM-MAGNESIUM (ZAM)

Optimized Steel Grades for ZAM Synergy

GradeStandardYield (MPa)Tensile (MPa)Application Focus
HX380LAD+ZMEN 10346260–360380–480Solar farm structures
S550MC+ZMEN 10149-2550 min600–750EV battery trays
JSC440W+ZMJIS G 3320440 min460–590Coastal building facades
ASTM A653 SS550ASTM A653550 min600 minLogistics racks

3. ZAM COATING TECHNOLOGY

Composition & Mechanism

  • Alloy Ratio: Zn-6%Al-3%Mg (Optimal for MgZn₂/Al-rich eutectic barrier)
  • Protective Layer Formation:
    • MgZn₂ Nano-Phases: Seal micro-cracks via hydroxide crystallization
    • Al-rich Zones: Form stable Al₂O₃ layer against chlorides
  • Self-Repair: Mg ions migrate to exposed steel → create [Mg(OH)₂·MgCO₃] films

Performance vs. Standards

TestHuaxiao AZ150HDG (Z275)Galvanized (GI)
Salt Spray (ASTM B117)1,500+ hours120 hrs600 hrs
SO₂ Cyclic (ISO 6988)Zero rust (200 cycles)Severe rustingModerate rusting
Cut-Edge Protection<0.3mm creep>3.5mm creep>2.0mm creep

4. MECHANICAL & PHYSICAL PROPERTIES OF ZINC-ALUMINUM-MAGNESIUM (ZAM)

PropertyTest MethodValue (AZ150)Value (AZ200)
Bending Fatigue LimitISO 1143580 MPa (0.8mm)620 MPa (1.0mm)
Thermal ConductivityASTM E146160 W/m·K (20–100°C)58 W/m·K
Coefficient of FrictionASTM D18940.12 (Skin-passed)0.15 (Regular)
Adhesion (T-Bend)EN 13523-70T0T

5. INDUSTRY-SPECIFIC APPLICATIONS

SectorComponentRecommended ProductPerformance Guarantee
Offshore WindTower flange connectionsAZ200 Plate>25 yrs seawater splash zone
EV InfrastructureCharging station housingsAZ150 SheetSalt spray >2,000 hrs (IP67)
AgricultureFertilizer silo panelsAZ135 CoilResists NH₃/H₂S corrosive vapors
RailwaysCargo container floorsAZ180 SheetAbrasion resistance: 500k+ load cycles

FAQs: Zinc-Aluminum-Magnesium (ZAM) Coated Steel Coil / Sheet / Plate

A: ZAM reduces creep corrosion at cut edges from >3mm to <0.5mm after 10 years (ISO 9227). Mg-carbonate layers block chloride ingress.

A: Use short-circuit MIG welding with Si-killed steel base:

  • Wire: ER70S-6
  • Parameters: 22V/160A, 20L/min Ar/CO₂ (98/2)

A: 15 MT with ±6g/m² tolerance (EN 10346 Class 2).

A: Optional. For harsh UV environments, apply:

  1. Etch primer (ZrTiO₄ nano-coating)
  2. Polyester/Si-poly hybrid topcoat

A: 1,500 hrs salt spray ≈ 30–40 years in ISO 12944 C3 environments.

A: Full EN 1090-2 EXC3 documentation for EU bridge projects.

WHY THIS STRUCTURE WINS BUSINESS

  1. Technical Dominance: Nano-phase chemistry explanations establish scientific authority.
  2. Risk Mitigation: Third-party certifications and 10-year warranties eliminate purchasing hesitation.
  3. Total-Cost Leadership: Sustainability metrics + lifecycle calculators justify premium pricing.
  4. Conversion Velocity: Tiered CTAs guide engineers from validation to procurement.

Huaxiao-Alloy doesn’t just supply steel – we deliver engineered corrosion immunityEvery specification reflects our identity as a global coating solutions architect.

Zinc-Aluminum-Magnesium (ZAM) Coated Steel Coil / Sheet / Plate

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