Alloy Steel.

Alloy steel is steel that contains alloying elements in its composition in addition to carbon. They are introduced intentionally to change certain qualitative characteristics of a manufactured part. Alloying inclusions are manganese, silicon, nickel, molybdenum, chromium, tungsten, cobalt, vanadium, etc. Each of these components has its effect on the steel quality. For example, nickel provides corrosion resistance as well as strength and ductility. Chromium can reduce rusting and increase hardness. Tungsten is included to increase the red and general hardness. Without listing the properties of each component, we can say that all of them affect steel characteristics in one way or another. They are intentionally included into the composition. The purpose of manufactured parts determines the choice of proportion and amount of introduced alloying elements. Alloy steel is divided by alloying inclusions and by purpose. Thus, according to the first classification, alloy steel is divided into low-alloy, medium-alloy and high-alloy steel. The content of alloying components in each of the said groups is to 2.5%, 2.5-10% and over 10%, respectively. According to the second classification, alloy steel is divided into tool steel, structural steel, and steel with special chemical and physical properties. Certainly, alloy steel has a number of advantages over carbon steel, excluding all its downsides. Currently, alloy steel is widely used in progressive technology. The use of alloy steel in production process allows not only to save metal, but also to directly affect the material characteristics.

As for production of forgings, alloy steel is widely used for this purpose nowadays. Alloy forgings involve changes in different properties of the parts depending on the intended purpose. Of course, the price of alloy steel forgings will be slightly higher than the cost of carbon forgings, but it’s completely justifiable.

Steel forging allows to manufacture workpieces of various parts. Of course, its shape and size are far from perfect, but that is why it’s called a workpiece. A forging production suggests its further processing, which results in changing not only of the shape of the part, but also of the properties of material itself. In first case, the forging is subjected to physical impact, while in the second case thermal impact is applied. Production of forgings according to the drawings is an essential condition, and a drawing of the part itself is the basis for production. The forging is calculated with consideration of not only the size of the part, but also tolerances and deviations required in the production process. The forging weight depends on its shape and steel density value. Certainly, the use of alloy steel allows to produce high-quality forgings of various types: whether that be shafts forging, gear forging, or circle forging. Alloy forgings clearly have a lot of merits. Diverse effects of alloying elements are a great benefit to the quality of the finished part.


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