0.95BMT 168MM AFP Aluzinc Steel Coil Light Steel House G550 Structural Steel

Product Specification

0.95BMT *168MM AFP 55%Aluzinc Steel Coil Light Steel House G550

Structural Steel AZ150 Galvalume Steel Coil Anti-Finger Print

1. Application of Aluzinc Steel Coil in the Stone-Coated Metal Roof Tile Industry

• Overview

Aluzinc steel coil, also known as Galvalume, is extensively used in the production of stone-coated metal roof tiles. This material choice is driven by its superior performance characteristics compared to traditional galvanised steel. Stone-coated metal roof tiles are known for their durability, aesthetic appeal, and ability to withstand extreme weather conditions, making Aluzinc steel an ideal substrate for this application.

• Why Aluzinc over Galvanised Steel?

1. Superior Corrosion Resistance:

- Composition:

Aluzinc steel is coated with an alloy composed of 55% aluminium, 43.4% zinc, and 1.6% silicon. This composition provides significantly better corrosion resistance compared to galvanised steel, which is coated with pure zinc.

- Durability:

The aluminium in the coating forms a protective barrier that prevents corrosive substances from reaching the steel core, extending the life of the roof tiles. This is particularly important in coastal and industrial environments where corrosion can be a significant issue.

2. Improved Thermal Reflectivity:

- Energy Efficiency:

The high aluminium content in Aluzinc steel gives it excellent thermal reflectivity, which can help reduce heat absorption in buildings. This leads to improved energy efficiency and can lower cooling costs, a valuable feature for roofing materials.

3. Enhanced Aesthetic Appeal:

- Surface Appearance:

Aluzinc steel has a smooth, shiny surface that is aesthetically pleasing and can enhance the visual appeal of stone-coated roof tiles. The attractive finish of Aluzinc steel can be maintained for a longer period compared to galvanised steel, which tends to dull and oxidise over time.

4. Longer Service Life:

- Extended Longevity:

Stone-coated metal roof tiles made from Aluzinc steel typically have a longer service life due to the enhanced protective properties of the coating. This results in lower maintenance and replacement costs over the lifespan of the roof.

• Application in Stone-Coated Metal Roof Tiles

1. Base Material:

- Substrate:

Aluzinc steel serves as the base material for stone-coated metal roof tiles. Its strength and formability make it ideal for creating durable and lightweight roofing panels.

2. Stone Coating:

- Adhesion:

The coating process involves applying a layer of adhesive to the Aluzinc steel substrate, followed by embedding stone granules. The excellent adhesion properties of Aluzinc steel ensure that the stone granules remain securely attached, even under harsh weather conditions.

3. Protective Layers:

- Multi-layer Protection:

After the stone granules are applied, a clear acrylic overcoat is added to protect the stones and enhance UV resistance. The combination of Aluzinc steel and multiple protective layers provides a robust barrier against environmental damage.

4. Versatile Designs:

- Aesthetic Options:

Stone-coated metal roof tiles come in various styles, colours, and textures, allowing homeowners and builders to choose designs that complement different architectural styles. Aluzinc steel’s ability to hold coatings well enhances the variety and vibrancy of these options.

• Advantages for the Stone-Coated Metal Roof Tile Industry

1. Cost-Effectiveness:

- Long-Term Savings:

While Aluzinc steel may have a higher initial cost compared to galvanised steel, its longer service life and reduced maintenance needs result in overall cost savings.

2. Environmental Benefits:

- Sustainability:

The extended lifespan and recyclability of Aluzinc steel contribute to environmental sustainability. Reducing the frequency of roof replacements and the associated waste makes Aluzinc a more eco-friendly choice.

3. Performance in Extreme Conditions:

- Weather Resistance:

Aluzinc steel’s superior performance in extreme weather conditions, including high UV exposure, heavy rain, and snow, makes it an ideal choice for roofing applications in diverse climates.

• Conclusion

Aluzinc steel coil is the preferred material for stone-coated metal roof tiles due to its superior corrosion resistance, thermal reflectivity, aesthetic appeal, and longer service life. These characteristics make it a more cost-effective and durable option compared to galvanised steel, ensuring that roofs made from Aluzinc-coated tiles can withstand harsh environmental conditions while maintaining their appearance and structural integrity.

2. Characteristics:

• Corrosion resistance: zinc is chemically active, in the air at room temperature, the surface generates a thin and dense layer of alkaline zinc carbonate film, which can prevent further oxidation, and aluminium in the air, can form a layer of insoluble oxides, in which the barrier protection function.
• Heat Resistant: Aluminium zinc plated sheets can be used in high temperature environments up to 315 degrees.
• Reflectivity: Aluminium-zinc coated sheets are highly reflective, with a heat reflectivity almost twice that of galvanised steel, making them ideal for use on steel metal roofs to achieve energy savings.
• Easy to paint: Aluminium-zinc-plated sheets from aluminium-zinc-plated sheet manufacturers have excellent adhesion between the sheet and the paint and can be painted without pre-treatment or weathering.
• The coating adhesion of the aluminium-zinc plating layer is relatively good, so it can be applied directly to advertising boards and general-purpose boards without pre-treatment such as weathering.

3. Specifications 

1) Standard: ASTM A792M, AS1397, EN10346/ EN10143 all according to the customer's request
2) Grade: SGCC, CS-Type B, Grade 350, G550, Grade 50, Grade 80, SS550GD, all according to the customer's request

3) Capacity: about 20000 tons per month

4) Thickness: from 0.13mm to 2mm, all available
5) Width: from 600mm to 1250mm, regular size:750-762mm,900-914mm,1000mm,1200mm,1219-1250mm all available
6) Coil ID: 508mm
7) Coil weight: from 2-10MT, according to the customer's request

8) Zinc coating weight: AZ30~AZ165g/m2

9) Spangle: regular spangle,big spangle, small spangle
10) Surface treatment: Anti-finger print (Green, Blue, Golden, No color) Chemical passivating, oils, passivating oils,skin passed
11) Edge: mill edge, cut edge
12) Min trial order 25 ton each thickness

Application: 

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