ASTM A792M CS-B AZM150+/-20 Aluzinc Steel Coil 55% Aluminum 43.5% Zinc 1.5% Si Galvalume Steel Regular Spangle

Aluminium-zinc steel is composed of an aluminium-zinc alloy structure, consisting of 55% aluminium, 43.4% zinc and 1.6% silicon solidified at a high temperature of 600 degrees Celsius. Its entire structure consists of aluminium - iron - silicon - zinc, the formation of dense tetrameric crystals of an alloy coated steel.

Main advantages
 

Characteristics and Benefits:

1. Corrosion Resistance:

- The aluminum in the coating forms a passive layer that resists corrosion.

- Zinc provides sacrificial protection, which is especially beneficial at cut edges, scratches, and areas of coating damage.

- Overall, the corrosion resistance is significantly better than that of pure galvanized steel, typically lasting up to four times longer in similar environments.

2. Heat Resistance:

- Can withstand high temperatures up to 315°C (600°F) without discoloration or loss of performance, making it suitable for high-temperature applications.

3. Thermal Reflectivity:

- The coating reflects a high percentage of heat and sunlight, which can improve energy efficiency in buildings by reducing cooling costs.

4. Aesthetic Appeal:

- The surface has a unique spangled appearance, often considered more attractive than plain galvanized steel.

- Can be pre-painted or left as-is for an aesthetically pleasing finish.

5. Durability:

- Offers a long service life due to its resistance to weathering and corrosion.

- The protective properties remain effective even in harsh environments, such as marine or industrial settings.