Fiji Aluzinc G550 0.45*940 AFP Aluzinc used for roof panel metal tiles AZm150 Steel Coil

Introduction:

55% Aluzinc steel coils, also known as Galvalume or Aluminium-Zinc alloy coated steel, are a type of steel coated with an alloy comprising approximately 55% aluminum, 43.4% zinc, and 1.6% silicon. This unique coating provides a combination of the excellent corrosion resistance of aluminum and the galvanic protection of zinc, making it a superior material for various applications.

Composition:

- Aluminum (55%): Provides exceptional corrosion resistance by forming a protective layer of aluminum oxide.

- Zinc (43.4%): Offers sacrificial protection, similar to traditional galvanized steel, protecting the steel substrate by corroding preferentially.

- Silicon (1.6%): Enhances adhesion of the coating to the steel and helps maintain the integrity of the alloy layer during fabrication.

The metal house building industry in Fiji has gained popularity due to the country’s tropical climate and the need for durable, cost-effective, and sustainable housing solutions. Metal-based construction materials offer resilience against harsh weather conditions such as cyclones, heavy rainfall, and humidity, which are common in Fiji.

Metal Products Used in House Building in Fiji

1. Galvanized Steel

- Widely used for structural framing: Galvanized steel is popular for house frames due to its strength, durability, and corrosion resistance. It provides long-lasting structural support, especially in the coastal areas of Fiji, where salt air can accelerate corrosion.

- Roofing materials: Steel roofing is commonly used in Fijian homes, offering protection against cyclonic winds, rain, and high humidity. The galvanized coating prevents rust and deterioration over time.

2. Aluzinc (Galvalume) Steel

- Roofing and cladding: Aluzinc steel combines the corrosion resistance of aluminum with the strength of zinc, making it ideal for roofing and exterior cladding. It is known for reflecting heat, which helps to maintain cooler indoor temperatures, important in Fiji's hot climate.

- Cyclone resistance: Aluzinc is often used in areas prone to cyclones, as it provides better protection against wind damage compared to other materials.

3. Color-Coated Steel (Pre-Painted Steel)

- Roofing and wall cladding: Color-coated steel (pre-painted or coated steel) is increasingly used in Fiji for roofing and siding. It offers an aesthetic appeal with a variety of color options, while still maintaining the durability and weather resistance needed for Fiji’s climate.

- Maintenance-free finish: The paint coatings on these steel products reduce the need for regular maintenance, which is an advantage in the tropical environment where moisture and heat can degrade traditional materials.

America standards ASTM A792M

Australian Standard AS1397