55% Aluzinc Blue AFP Galvalume Steel Structural Steel S550GD AZ150 Steel-Frame

Product Specification

55% Aluzinc Blue AFP Galvalume Steel Structural Steel

S550GD AZ150 Steel-Frame House 50 Years Warranty

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

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.

Which is More Scratch-Resistant and Durable: Galvanised or Aluminium Zinc-Plated Light Steel Keels?

Differences Between Galvanised and Aluminium Zinc Plating

Lightweight steel coatings can be classified into two main types: galvanised and aluminium zinc plated.

Galvanised Coating:

• Customizable Thickness: The thickness of the galvanised coating can be adjusted based on the specific environmental conditions and functional requirements, typically ranging from 120g/m² to 275g/m².
• Designation: For example, a Z275 galvanised steel sheet indicates that the zinc layer on both sides of the sheet weighs 275g/m².
• Physical Changes: Over time, galvanised steel exposed to the atmosphere reacts with oxygen, causing the surface to darken.

Aluminium Zinc Plating:

• Exceptional Corrosion Resistance: Aluminium zinc-plated light steel offers corrosion resistance three times greater than pure galvanised steel. It features attractive zinc flowers on the surface, making it suitable for use as exterior building panels. The abbreviation AZ150 denotes its designation.
• Long-Term Color Stability: Aluminium zinc-plated steel maintains its appearance over time. When exposed to chemicals, a physical reaction forms an aluminium protective film on the surface, isolating the keel from harmful substances and preventing rust.
• Mechanism of Corrosion Resistance: The superior corrosion resistance is primarily due to aluminium. When the zinc layer wears away, aluminium forms a dense layer of aluminium oxide, protecting the underlying material from further corrosion.

Outdoor Durability:

• Aluminium zinc-plated steel coils have been tested in various atmospheric environments for over 20 years. These tests confirm that aluminium zinc-plated steel provides significantly better protection for cut edges compared to galvanised steel.

Heat Reflectivity:

• Aluminium zinc-plated mild steel boasts high thermal reflectivity, nearly twice that of galvanised mild steel, making it an ideal choice for thermal insulation.

In summary, aluminium zinc-plated light steel keels offer superior scratch resistance, durability, and thermal properties compared to galvanised light steel keels, making them a more reliable choice for various applications.

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