Commercial 35CrMo is an alloy steel grade used for making medium- and heavy-duty machine components. It is composed of 0.35% carbon, 0.5% chromium, and 0.25% molybdenum. Moreover, the alloy steel also contains trace amounts of other elements, such as silicon and manganese.
Commercial 35CrMo alloy steels are used in the manufacture of automobiles, rail cars, machinery parts, marine equipment, and turbines or components. They are also used in industries, where most components are exposed to high levels of stress and corrosion. The steel’s mechanical properties are further enhanced by its ability to take on and hold high surface loads, making it an excellent choice for use in a wide range of engineering and manufacturing applications.
Although the commercial 35CrMo steel is known and valued for its exceptional electrical and mechanical properties, it may contain low levels of non-metallic inclusions, such as oxides and sulfides. Such non-metallic inclusions are formed during the manufacturing process and typically remain embedded in the steel matrix. The presence of non-metallic inclusions can significantly alter the mechanical and electrical properties of the alloy steel and thus affect the performance of the manufactured products.
Non-metallic inclusions in commercial 35CrMo can be minimized through the use of controlled casting conditions and removal or reduction of the amount of inclusions present. In order to further reduce the amount of non-metallic inclusions present in 35CrMo, it is necessary to employ an operation known as grain refinement or refinement of the steel microstructure. Grain refinement involves changing the grain size and shape to reduce the amount of inclusions present in the steel matrix. During this process, the grain size will be significantly reduced, making it more difficult for the non-metallic inclusions to stay embedded.
In addition to the influence of a controlled casting process, the non-metallic inclusions can be reduced through the use of grain refinement techniques. When coupled with a reduced grain size and shape, the amount of non-metallic inclusions present in the 35CrMo steel can be significantly reduced, leading to a more consistent and reliable performance of components manufactured from the alloy steel.
Overall, commercial 35CrMo is a valuable alloy steel due to its exceptional mechanical and electrical properties. However, the presence of non-metallic inclusions present in the steel can significantly affect its properties. To this end, it is necessary to use a controlled casting process and to employ grain refinement techniques in order to reduce the amount of inclusions present in 35CrMo. By doing this, the performance of components produced from the steel will remain consistent and reliable.
