24 Hours Hotline : +86 131 0325 0627

Who We Are >> News

The Difference Between Galvanized Steel And Stainless Steel

Nov. 07, 2019

A Coating Galvanized Steel Strip is a steel sheet whose surface is coated with a layer of zinc. Galvanizing is a cost-effective and effective rust-preventing method that is used in the world for about half of the world's zinc production. The galvanized steel sheet is used to prevent the surface of the steel sheet from being corroded and prolonged. The surface of the steel sheet is coated with a layer of metallic zinc. This zinc-coated steel sheet is called a galvanized steel sheet.


The galvanized steel sheet is a steel sheet coated with a layer of zinc on the surface. Zinc plating is an economical and effective rust prevention method that is often used, and about half of the world's zinc production is used for this.


Coating Galvanized Steel Strip


Coating Galvanized Steel Strip


According to production and processing methods can be divided into the following categories:


1 Hot-dip galvanized steel sheet: The steel sheet is immersed in a molten zinc bath to adhere a zinc-plated steel sheet to the surface. At present, it is mainly produced by continuous galvanizing process, that is, the coiled steel plate is continuously immersed in a zinc-plated plating tank to form a galvanized steel sheet, and in addition, there is a Hot Dip Galvanized Steel Coil;


2 alloyed galvanized steel sheet. This steel sheet is also produced by hot dip, but immediately after it is discharged, it is heated to about 500 °C to form an alloy film of zinc and iron. This galvanized steel sheet has good adhesion and weldability of the coating;


3 electro-galvanized steel plate. The production of such a galvanized steel sheet by electroplating has good processability. However, the coating is thinner and the corrosion resistance is not as good as that of hot-dip galvanized steel sheet;


4 single-sided plating and double-sided differential galvanized steel. Single-sided galvanized steel, that is, a product that is only galvanized on one side. It has better adaptability than double-sided galvanized steel sheet in welding, painting, anti-rust treatment and processing. In order to overcome the shortcomings of uncoated zinc on one side, there is a galvanized steel sheet coated with a thin layer of zinc on the other side, that is, a double-sided galvanized steel sheet;


5 alloy, composite galvanized steel sheet. It is made of zinc and other metals such as aluminum, lead, zinc, etc., or even composite plated steel. This steel plate has excellent rust resistance and good coating properties;


In addition to the above five types, there are also colored galvanized steel sheets, printed galvanized steel sheets, and polyvinyl chloride laminated galvanized steel sheets. However, hot dip galvanized steel sheets are still commonly used at present.


Stainless steel is the abbreviation of stainless acid-resistant steel. It is resistant to air, steam, water and other weak corrosive media or stainless steel. It is called stainless steel. It is resistant to chemical corrosion media (chemical, alkali, salt, etc.). Steel grades are called acid-resistant steels.


Due to the difference in chemical composition between the two, their corrosion resistance is different. Ordinary stainless steel is generally not resistant to chemical media corrosion, while acid-resistant steel generally has rust. The term "stainless steel" refers not only to a single piece of stainless steel, but to more than one hundred industrial stainless steels, each of which has been developed for its specific application. The key to success is first to clarify the purpose and then determine the correct steel grade. There are usually only six types of steels associated with the application of building construction. They all contain 17-22% chromium, and the better steels also contain nickel. The addition of molybdenum further improves atmospheric corrosivity, particularly corrosion resistance to chloride-containing atmospheres. In practical applications, steel that is resistant to weak corrosive media is often referred to as stainless steel, while steel that is resistant to chemical media is referred to as acid-resistant steel. Due to the difference in chemical composition between the two, the former is not necessarily resistant to chemical media corrosion, while the latter generally has rust. The corrosion resistance of stainless steel depends on the alloying elements contained in the steel.


The above is the difference between galvanized steel and stainless steel. I hope that the introduction of Hot Dipped Galvanized Steel Sheet Supplier can help you.

Hot Products

Focus on precision parts manufacturers