Is there a limit to hot dip galvanized steel sheet application

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What is Hot Dip Galvanized Steel Sheet

Hot Dip Galvanized Steel Sheet

The hot-dip-galvanized steel sheet is a pre-plated steel sheet obtained by hot-plating a layer of Al-Zn on both sides of a cold-rolled steel sheet of various strengths and thicknesses. It combines the physical protection and high durability of Al with the electrochemical protection properties of Zn.

Hot Dip AL Zn Steel Sheet Structure

Sometimes the surface layer has a high decorative bright silver color and a regular pattern, and has a embossing feeling.

Hot Dip AL Zn Steel Sheet Application

This process is very familiar to people. It is coated with a layer of protection on the substrate and has an aesthetic effect. Like the sunscreen protects the skin, the aluminum-zinc coating has a good protective effect on the steel plate, and a defect occurs. It is protecting the electrochemical protection.

Hot Dip Galvanized Steel Sheet Corrosion Process

Advantage of Hot Dip AL-ZN Steel Sheet

As can be seen from the above description, the biggest advantage of hot-dip aluminum zinc is corrosion resistance, which is much higher than that of hot-dip galvanized steel sheets of the same thickness and high service life.

Compare the basic properties of various coating materials
Property AL Hot dip galvanized aluminum (55%AL-43.4%Zn,1.6% Si) Hot-dip aluminum zinc (Zn-5%AL) Hot galvanizing (GI)
Heat resistant Good Good bad bad
welding performance bad bad average good

Applicable properties with wet concrete

worse worse bad good
Sacrificial anode protection none good good good
Service Life good good average average

Heat resistance is also a major advantage: ordinary hot-dip galvanizing products, the use temperature is generally not more than 230 ° C, galvanized sheet can be used at 315 ° C for a long time. Compare the basic properties of various coating materials.

Some oven liners also use hot-dip aluminum-zinc plates

Galvanized Steel Sheet Application in Oven

Highly reflective: The ability to reflect light and heat is twice that of hot-dip galvanized steel, so it is often used to make energy-efficient building materials.

Formability: It can meet general processing requirements such as roll stamping and bending.

Hot-dip aluminum-zinc plate has so many benefits, is there any use limit? Of course there is!

  1. In an alkaline environment, hot-dip aluminum-zinc should be used with caution;
  2. To avoid cutting hot-dip aluminum zinc directly on the construction site, it is best to use a trimming board;
  3. The use of aluminum-zinc-plated materials should pay attention to drainage to prevent corrosion;
  4. Avoid direct contact with moist cement, wood, lead, copper, graphite, etc.;
  5. When processing and stacking, it is necessary to prevent the fingerprint film from being blackened by moisture and high temperature.

Common grades of AGICO Steel include DC51D+AZ, DC52D+AZ, DC53D+AZ, DC54D+AZ, S250GD+AZ, S300GD+AZ, S350GD+AZ, S5500GD+AZ, HX420LAD+AZ,contact agico for other grades info if you are interested.

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