AZ50 Galvalume® Steel Sheet: Technical Specifications & Industrial Applications‌

‌Material Definition‌

AZ50 Galvalume® is a cold-rolled carbon steel substrate coated with an aluminum-zinc-silicon alloy (55% Al, 43.4% Zn, 1.6% Si) via continuous hot-dip process. Compliant with ‌ASTM A792/A792M‌ and ‌EN 10346 (DX51D+AZ)‌ standards.

‌Key Parameters‌

• ‌Coating Weight‌: 150 g/m² (AZ150 equivalent, 0.50 oz/ft² total both sides)
• ‌Coating Thickness‌: 20-27 μm (varies with surface profile)
• ‌Base Steel Thickness‌: 0.3-2.0 mm (commercial grades)
• ‌Tensile Strength‌: 270-500 MPa (dependent on substrate grade)

‌Technical Advantages‌

1. ‌Corrosion Resistance‌:
   • 2-6x superior to G90 galvanized steel in salt spray tests (1,500-2,500 hrs to red rust)
   • Self-healing properties via sacrificial Zn and Al₂O₃ barrier formation
2. ‌Thermal Stability‌:
   • Sustains 315°C continuous service (Al-Si eutectic protection)
   • Reflectivity: 80% solar radiation (reduces heat absorption)
3. ‌Mechanical Performance‌:
   • Elongation: 15-25% (ASTM A370)
   • Microhardness: 80-120 HV (coating layer)

‌Manufacturing Process‌

1. ‌Surface Preparation‌:
   • Alkaline cleaning (pH 10-12) → Acid pickling (HCl 15%) → Fluxing (NH₄Cl)
2. ‌Coating Application‌:
   • Molten alloy bath: 600-620°C immersion → Air knife control (coating uniformity ±5%)
3. ‌Post-Treatment‌:
   • Chromate-free passivation (Ti/Zr-based) → Oiling (C5-C8 anti-fingerprint)

‌Application Matrix‌

‌1. Architectural & Construction‌

‌2. Automotive Engineering‌

• ‌Exhaust Systems‌:
  • 1.0-2.0mm AZ50 with Aluminized topcoat
  • Thermal cycling resistance: -40°C ↔ 650°C (1,000 cycles)
• ‌Fuel Tanks‌:
  • 1.5mm AZ50 + internal polymer lining
  • Corrosion warranty: 15 years (NACE TM0172 compliant)

‌3. Appliance Manufacturing‌

• ‌HVAC Components‌:
  • 0.6-1.2mm AZ50 with smooth finish
  • Condensate resistance: pH 2-12 exposure
• ‌Microwave Cavities‌:
  • 0.8mm AZ50 + IR-reflective coating
  • EMI shielding: 60-80 dB (1-10 GHz)

‌4. Agricultural Infrastructure‌

• ‌Poultry Housing‌:
  • 0.7mm AZ50 with antimicrobial coating
  • NH₃ corrosion resistance: <1μm/year loss
• ‌Grain Silos‌:
  • 2.0mm AZ50 structural panels
  • Abrasion resistance: 500+ Taber cycles (CS-10 wheel)

‌Comparative Performance‌

‌Quality Assurance‌

• ‌Coating Inspection‌: XRF testing (Zn/Al/Si ratio control ±1%)
• ‌Flatness Tolerance‌: ≤1.5mm/m (EN 10130)
• ‌Certifications‌:
  • LEED-compliant (recycled content ≥25%)
  • FM Global Approved (Class 1 Fire Rating)

Available in coil (ID 508/610mm) or pre-cut sheets (≤12,000mm length). Custom patina finishes (weathered/Cor-Ten appearance) available for architectural applications.

Note: AZ50 Galvalume® is a registered trademark of BIEC International Inc. Consult datasheets for specific chemical exposure limitations.

Product Parameters

Chemical Composition

Mechanical Properties

Galvanized Surface Selection

Material Comparison

Packing And Delivery