AZ150 Galvalume Steel Sheet

The AZ150 Galvalume® steel sheet is a premium-grade construction material featuring a ‌hot-dip aluminum-zinc-silicon alloy coating‌ (55% Al, 43.5% Zn, 1.5% Si) with a ‌total coating weight of 150g/m²‌ (36μm per side). Engineered to deliver ‌4× the corrosion resistance‌ of traditional G90 galvanized steel, this high-performance sheet achieves ‌2,000+ hours of salt spray protection‌ (ASTM B117) and a ‌40+ year service life‌ in marine, industrial, and high-humidity environments. Compliant with ‌ASTM A792‌, ‌EN 10346‌, and ‌JIS G3321‌, AZ150 excels in roofing, automotive, and HVAC systems requiring unmatched strength and longevity.

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Product Introduction

‌AZ150 Galvalume® Steel Sheet: Advanced 55% Aluminum-Zinc Alloy Coated Steel for Extreme Durability


‌Product Overview‌

The AZ150 Galvalume® steel sheet is a premium-grade construction material featuring a ‌hot-dip aluminum-zinc-silicon alloy coating‌ (55% Al, 43.5% Zn, 1.5% Si) with a ‌total coating weight of 150g/m²‌ (36μm per side). Engineered to deliver ‌4× the corrosion resistance‌ of traditional G90 galvanized steel, this high-performance sheet achieves ‌2,000+ hours of salt spray protection‌ (ASTM B117) and a ‌40+ year service life‌ in marine, industrial, and high-humidity environments. Compliant with ‌ASTM A792‌, ‌EN 10346‌, and ‌JIS G3321‌, AZ150 excels in roofing, automotive, and HVAC systems requiring unmatched strength and longevity.


‌Key Technical Specifications‌

‌1. Base Material & Dimensions‌

  • ‌Thickness‌: 0.12mm (ultra-thin cladding) to 6.00mm (structural beams) ±0.03mm tolerance
  • ‌Width‌: 600–1,500mm (optimized for roll-forming and laser cutting)
  • ‌Coating Thickness‌: 18μm (single side) / 36μm (both sides)
  • ‌Density‌: 3.75g/cm³ (alloy layer) / 7.85g/cm³ (base steel)

‌2. Alloy Composition & Protection Mechanism‌

Element Content (%) Function
Aluminum 55–58 Forms self-repairing Al₂O₃ oxide barrier
Zinc 41–43 Sacrificial anode for edge & scratch protection
Silicon 1.5–2.0 Prevents brittle Fe-Al intermetallic formation

Corrosion Protection: When exposed to moisture, zinc ions create a galvanic cell, while aluminum forms a dense oxide layer—‌reducing red rust by 85% vs. G90 galvanized steel‌.


‌Performance Advantages‌

  1. ‌Superior Corrosion Resistance‌
    • ‌2,000+ hours‌ salt spray resistance (ASTM B117) vs. 900 hours for G90 galvanized steel.
    • ‌Edge protection‌: Zinc-rich phase sacrifices itself at cut edges, extending sheet lifespan by ‌3–5×‌ in coastal zones.
  2. ‌Thermal Efficiency & Reflectivity‌
    • ‌75% solar reflectance‌ (ASTM E1918) lowers rooftop temps by ‌20°C‌, reducing cooling costs by ‌25%‌.
    • Thermal emittance: ‌0.85‌ (vs. 0.65 for galvanized steel), qualifying for LEED energy credits.
  3. ‌High-Temperature Stability‌
    • Withstands ‌315°C continuous exposure‌ without coating delamination—ideal for exhaust systems.
  4. ‌Formability & Aesthetics‌
    • ‌Zero-spangle finish‌ (Ra 0.8μm) enables premium painted surfaces with ‌85+ gloss units‌.
    • Bend radius: ‌1.5× thickness‌ (per ASTM A755), suitable for complex architectural designs.

‌Mechanical Properties‌

Grade (EN 10346) Yield Strength (MPa) Tensile Strength (MPa) Elongation (A80%) Application
DX51D+AZ 240–380 270–500 ≥22% Roofing
S350GD+AZ ≥350 ≥420 ≥16% Truck Beds
S550GD+AZ ≥550 ≥550 Load Beams

Tested per ISO 6892-1:2019 tensile standards


‌Manufacturing Process‌

  1. ‌Hot-Dip Coating‌:
    • Steel cleaning: 3-stage alkaline degreasing (pH 11.5, 65°C)
    • Annealing: 730°C in 10% H₂ + 90% N₂ atmosphere
    • Alloy bath immersion: 590°C with 1.5% Si for adhesion
  2. ‌Surface Treatments‌:
    • ‌Anti-fingerprint (N5)‌: Silane-based nano-coating prevents oxidation stains.
    • ‌PVDF coating‌: 25μm fluoropolymer layer for coastal architecture (40% gloss retention after 10 years).

‌Industry Applications‌

Sector Use Case Recommended Coating Service Life*
‌Construction‌ Standing seam roofing 150g/m² AZ + PVDF 40+ years
‌Automotive‌ Exhaust systems 150g/m² AZ (N5) 15–20 years
‌Agriculture‌ Grain silos 90g/m² AZ + epoxy 30+ years
‌Energy‌ Solar mounting 60g/m² AZ (bare) 35+ years

Based on ISO 12944-7 CX corrosion category


‌Global Material Equivalents‌

China Europe USA Japan
DC51D+AZ DX51D+AZ ASTM A792 SGLCC
S350GD+AZ S350GD+AZ CS Type B SGLC490

‌Sustainability & Compliance‌

  • ‌Recycled Content‌: 92% post-industrial steel scrap
  • ‌RoHS Compliance‌: Lead <0.05%, Cadmium <0.01%
  • ‌LEED Contributions‌: 3–6 points for solar reflectance (SSc7.1)

Product Show

G90 Galvanized Sheet supplier

Luo Kaiwei Steel Company is a comprehensive steel supplier that produces a variety of carbon steel plates, carbon steel pipes, galvanized steel, carbon steel coils, and steel profiles.

Luo Kaiwei Steel Company is a multi-ISO certified steel manufacturer specializing in carbon steel plates, pipes and galvanized coils since 2010. Competitive prices and ASTM/JIS compliant. Get instant quotes for bulk orders and global shipping support.

Tel: +86 15635685959

E-mail: [email protected]  

WhatsApp: +86 18912200505

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