30CrMo Alloy Structural Steel
30CrMo alloy structural steel is a kind of alloy structural steel with medium carbon content and high strength. It has good machinability, low temperature toughness, high hardenability and good welding performance. These advantages make it suitable for the manufacture of integral parts, large forgings and welded structural parts. It is also used as a reinforcing material for other materials, as well as for preventing plastic deformation.
30CrMo alloy structural steel is mainly composed of C, Si, Mn, Cr and a small amount of Mo. The C content is lower than 0.25%, Si≤0.40%, Mn is 0.90-1.20%, Cr is 0.80-1.10%, Mo is 0.15-0.25%. Add the small amount of Mo in this steel can refine the microstructure of the steel, improve the plasticity and ductility of the steel and reduce the aging sensitivity of the steel, which makes this steel has better mechanical properties than ordinary structural steel.
30CrMo alloy structural steel has good heat treatment performance. It is possible to obtain desired structures and properties after heat treatment. Generally, it is divided into tempering, normalizing and quenching, and then tempering. Tempering and normalizing can reduce the strength but increase toughness. The structure obtained after quenching is martensitic structure, which has the highest hardness, but the toughness is low.
30CrMo alloy structural steel has excellent performance, so it is often used for important carburizing parts such as cylinders, engines and screw shafts, which work at low speed and medium load. It is also widely used in surface hardening, nitriding parts, cold-stamping die and so on.
30CrMo alloy structural steel is often used in the manufacture of parts with complex shapes, large forgings and large welded structural parts. Its high strength can reduce the geometric size of components, increase the space utilization, and reduce the weight of components, thus saving raw materials, improving production efficiency and reducing production costs.
In conclusion, 30CrMo alloy structural steel is an ideal material for many types of structural components and parts due to its excellent performance. It has good machinability, low temperature toughness and good welding performance, making it suitable for the manufacture of integral parts, large forgings and welded components. In addition, it has high strength and good heat treatment properties, making it a great choice for many industrial applications.
