Main parameters: When there are alloying elements in steel above 10%, it is called high alloy steel. The brand is preceded by the letter X, followed by a number indicating the average carbon content (in tens of thousands) and the alloying element symbol (arranged by content), followed by the average percentage value indicating the content of each major alloying element (rounded to integers).
Types and uses of high alloy steel:
There are many kinds of alloy steel, usually divided into low alloy steel (content <5%), medium alloy steel (content 5% ~ 10%), high alloy steel (content >10%) according to the content of alloying elements;
According to the quality is divided into high quality alloy steel, special alloy steel; According to the characteristics and uses, it is divided into alloy structural steel, stainless steel, acid-resistant steel, wear-resistant steel, heat-resistant steel, alloy tool steel, rolling bearing steel, alloy spring steel and special performance steel (such as soft magnetic steel, permanent magnetic steel, non-magnetic steel).