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Different classifications of alloy steel

Shandong Xinhe International Trade Co., Ltd2022-07-26
Shandong Xinhe International Trade Co., Ltd today will take you to briefly understand some basic information of alloy steel:


In order to improve the mechanical properties, process properties or physical and chemical properties of steel, some alloying elements are consciously added to the steel, and these steels are called alloy steels.


The alloy steel systems of various countries vary according to their respective resource conditions, production and use conditions. In the past, nickel and steel systems have been developed in foreign countries. 


In my country, silicon, manganese, vanadium, titanium, niobium, boron, lead, and rare earth have been found as the main alloys. The main alloy steel system Alloy steel accounts for about ten percent of the total output of steel. Generally, alloy steel is smelted in electric furnaces and can be divided into 8 categories according to the purpose. They are: alloy structural steel, spring steel, Bearing steel, alloy tool steel, high-speed tool steel, stainless steel, heat-resistant non-skin steel, silicon steel for electrical use.


According to the total amount of alloying elements, total alloy less than 5 is called low alloy steel, 5%≤ total alloy < 10% is called medium alloy steel, and total alloy ≥ 10% is called high alloy steel. According to the main alloying elements, such as: 3Cr3MoW2V steel is called chromium tungsten silicon steel. According to the application: alloy structural steel, alloy tool steel, special performance steel.


In engineering construction, the use of alloy structural steel can reduce the weight of the structure and reduce the consumption of steel.


Characteristics of alloy steel: high strength, good toughness, wear resistance, corrosion resistance, high temperature resistance, low temperature resistance, etc.


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