Villa Roof AZ90 Stone Coated Tiles Galvalume Steel 55% Aluzinc Steel Coil Roof Panels Commercial Steel Quality DX51D

AZ70 Stone Coated Tiles Galvalume Steel

55% Aluzinc Steel Coil Roof Panels Commercial Steel Quality DX51D

1. Introduction: 

The surface of the Galvalume / Aluzinc steel sheet presents a unique smooth, flat, and gorgeous spangle looking, with a silver white base color. The special coating structure gives it excellent corrosion resistance. The normal service life of Galvalume / Aluzinc Steel Sheet and Coils can reach 25 years, and they have good heat resistance and can be used in high-temperature environments at 315 ℃; The adhesion between the coating and the paint film is good, and it has good processing performance, which can be used for stamping, shearing, welding, etc; The surface conductivity is very good.

The coating consists of 55% aluminum, 43.5% zinc, and 1.5% silicon in weight ratio, respectively. The production process of aluminum zinc steel sheet is similar to that of galvanized steel plate and aluminum plated plate, and it is a continuous melting coating process. 55% aluminum zinc alloy coated aluminum zinc steel plate has superior corrosion resistance compared to galvanized steel plate of the same thickness when exposed to the same environment on both sides. 55% aluminum zinc alloy coated aluminum zinc steel ( 55% Alu-zinc Steel) plate not only has good corrosion resistance, but also color coated products have excellent adhesion and flexibility.

2. Application of Aluminium-Zinc Coated Steel in the Home Appliance Industry

• 2.1 Overview

Aluminium-zinc coated steel, also known as Galvalume, is widely used in the home appliance industry due to its exceptional properties such as strong corrosion resistance, durability, and aesthetic appeal. The unique composition of aluminium, zinc, and silicon provides superior performance, making it a preferred material for various home appliances.

• 2.2 Material Requirements

The home appliance industry has specific requirements for aluminium-zinc coated steel to ensure it meets the necessary standards for performance and durability. These requirements include:

1. Composition:

- Typically, the coating consists of 55% aluminium, 43.4% zinc, and 1.6% silicon. This composition offers a balanced combination of protection and durability.

2. Thickness:

- The thickness of the aluminium-zinc coating can vary depending on the application, but it generally ranges from 30 to 150 grams per square meter.

3. Base Steel:

- The base steel used is usually low-carbon steel, which provides a good balance of strength and formability.

• 2.3 Surface Treatment

Surface treatment of aluminium-zinc coated steel is crucial for enhancing its performance in home appliances. Key surface treatments include:

1. Chromate Treatment:

- Applied to enhance corrosion resistance and paint adhesion. It also helps in preventing the formation of white rust during storage and transportation.

2. Anti-Finger Print Coating:

- A clear organic resin coating that prevents fingerprint marks, enhances surface smoothness, and provides additional corrosion resistance.

3. Oiling:

- A light oil coating is often applied to prevent oxidation and staining during handling and storage.

• 2.4 Characteristics and Features

1. Corrosion Resistance:

- The aluminium-zinc alloy provides superior corrosion resistance compared to traditional galvanised steel. The aluminium forms a protective oxide layer that prevents further corrosion.

2. Heat Reflectivity:

- The high aluminium content gives the steel excellent heat reflectivity, making it ideal for applications requiring thermal insulation, such as in ovens and refrigerators.

3. Aesthetic Appeal:

- The bright, reflective surface of aluminium-zinc coated steel adds a modern and attractive appearance to home appliances. This makes it suitable for visible parts like refrigerator doors, washing machine panels, and microwave ovens.

4. Formability:

- The steel’s excellent formability allows it to be easily shaped into various components, essential for manufacturing complex parts of home appliances.

5. Paintability:

- The surface treatments ensure excellent paint adhesion, allowing for a variety of colors and finishes, enhancing the aesthetic appeal and providing additional protection.

• 2.5 Applications in Home Appliances

1. Refrigerators:

- Aluminium-zinc coated steel is used for both the outer and inner panels of refrigerators, providing a clean, modern look and excellent corrosion resistance.

2. Washing Machines:

- The outer casing and drum of washing machines benefit from the material’s corrosion resistance and formability, ensuring longevity and durability.

3. Microwave Ovens:

- The reflective and heat-resistant properties make it ideal for the inner and outer panels of microwave ovens.

4. Air Conditioners:

- Used in the casing and some internal components, offering protection against harsh outdoor environments and enhancing energy efficiency.

5. Dishwashers:

- The corrosion-resistant properties protect against the high humidity and detergent exposure inside dishwashers.

6. Ovens and Stoves:

- The material’s heat resistance and durability are perfect for oven and stove exteriors and certain internal components.

• 2.6 Conclusion

Aluminium-zinc coated steel’s unique properties make it an ideal material for the home appliance industry. Its superior corrosion resistance, formability, aesthetic appeal, and heat reflectivity provide a wide range of benefits, ensuring that appliances are durable, functional, and visually appealing. With appropriate surface treatments and material specifications, aluminium-zinc coated steel continues to be a preferred choice for leading appliance manufacturers.

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

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