General classification of alloy steels

- Sep 29, 2017 -

Alloy steel (content 5% ~ 10%), high alloy steel (content> 10%); according to the quality is divided into high quality (5%), alloy steel (content of 5% ~ 10%), high alloy steel (content> 10%); Alloy steel, special alloy steel; according to the characteristics and uses are divided into alloy structural steel, stainless steel, acid steel, wear-resistant steel, heat-resistant steel, alloy tool steel, rolling bearing steel, alloy spring steel and special performance steel , Permanent magnet, no magnet) and so on.

In the steel in addition to iron, carbon and a small amount of unavoidable silicon, manganese, phosphorus, sulfur elements, but also contains a certain amount of alloying elements, steel alloy elements are silicon, manganese, molybdenum, nickel, , Niobium, boron, lead, rare earth and so on one or several, this steel is called alloy steel. China's alloy steel system, with their own resources, production and use of different conditions, foreign countries have developed nickel, Ge steel system, China found that silicon, manganese, vanadium, titanium, niobium, boron, lead, rare earth The main alloy steel alloy alloy steel in the total output of steel accounted for about 10 percent, usually in the electric furnace smelting according to the use of alloy steel can be divided into eight categories, they are: alloy structural steel, spring steel, Bearing steel, alloy tool steel, high-speed tool steel, stainless steel, heat-resistant steel, electrical silicon steel.


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