G550 0.43x1200 Aluminium Zinc Coil Galvalume Steel Coil Aluzinc Material
Galvalume Steel Sheet is carbon steel sheet coated with aluminum-zinc alloy by a continuous
hot-dip process. The nominal coating composition is 55% aluminum and 45% zinc. A small but
important addition of silicon is included in the coating alloy. It is added not to enhance the corr
-osion performance, but to provide good coating adhesion to the steel substrate when the product
is roll-formed, drawn, or bent during fabrication.
Common Specifications
Thickness: Base steel: 0.2–3.0 mm;
Coating: 10–30μm per side (e.g., AZ150 = 150 g/m² total coating weight).
Width: 600–1500 mm (customizable).
Surface Finish: Smooth (standard), matte, or embossed (e.g., spangled for anti-slip).
Key Features
♦ Corrosion Resistance
2–6 times more resistant than regular galvanized steel (GI), especially in harsh environments
(e.g., coastal, industrial areas). Aluminum forms a protective oxide layer (Al₂O₃), while zinc
provides sacrificial protection.
♦ Heat Resistance
Withstands temperatures up to 300°C long-term (short-term exposure to 600°C), ideal for
chimneys, oven parts, etc.
♦ Reflectivity
High solar reflectance (~75%), suitable for roofing and solar equipment.
♦ Formability
Excellent for stamping and bending, but coating abrasion may occur during severe processing.
Advantages
Durability – protected from corrosion in most end-use applications
Severe Conditions – superior in most atmospheric conditions
Sustainability – 100% recyclable with long service life
Flexibility – can be formed into a wide variety of end-use applications
Low Maintenance – easy to clean surface that is virtually maintenance free
Applications
55% Aluminium-Zinc Alloy Coated Steel products are found in a wide variety of applications
requiring long-term, maintenance free corrosion protection. End-use applications well suited
for 55% Aluminium-Zinc Alloy Coated Steel include roofing and wall panel applications, metal
buildings, fascia and other architectural applications.
Our company’s mainly advantages
♦ We have rich export operation experience for this product, and we know about the common-used
spec in your country.
♦ We have long-term cooperation with our Forwarder Agent, and harbor reinforcement team,
they dedicated to the operation of these raw material product for over 10 years.
♦ For every order, we have strictly packing and loading demand, we also take samples from
the batch product, check the mechanical properties and the capacity of corrosion resistant.
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