45Cr alloy structural steel

45Cr alloy structural steel

45Cr alloy structural steel is a kind of steel material based on carbon structural steel 17gCrSi, adding a certain amount of chromium and other alloying elements, so that the microstructure of the steel is hard and wear-resistant, and has good mechanical properties. The chemical composition of 45Cr alloy structural steel is basically the same as that of 18CrNiMo7-6 steel.

45Cr alloy structural steel is suitable for manufacturing important quenched and tempered mechanical parts such as heavy and medium speed shafts and large and medium size plastic moulds which require high strength and toughness. It is characterized by high fatigue strength and improved manufacturability.

45Cr alloy structural steel mainly contains carbon, silicon, manganese, chromium, molybdenum and vanadium. The microstructure of quenched and tempered 45Cr alloy structural steel is mainly lath martensite, which have high intensity and the hardness is higher, ensuring its longer service life.

45Cr alloy structural steel can be cold rolled, heat treated, and cold drawn. It has good mechanical properties, processing, and weldability properties. Cold drawn 45Cr alloy structural steel has good mechanical properties and wear resistance, and is commonly used for manufacturing shafts, bolts and bolts, hot extrusion dies, etc.

Heat treatment of 45Cr alloy structural steel mainly includes quenching and tempering, normalizing and quenching and tempering. Quenching and tempering can improve the mechanical properties of the steel, so as to improve its comprehensive performance. Normalizing and quenching and tempering will also increase the intensity and hardness of the steel.

The method of heat treatment for 45Cr alloy structural steel and its heat treatment cycle vary with the size and shape of the steel, the performance required, the use and conditions of use, the toughness and other requirements of the workpiece and other factors. The heat treatment process mainly includes quenching and tempering, and the heat treatment temperature should usually be controlled within the range of 850 5℃-880℃.

45Cr alloy structural steel has high strength, good wear resistance and impact toughness, good weldability and machinability. It is applicable to many industries such as military, aerospace, automotive, agricultural machinery, etc. It is a super alloy material with superior performance and wide application.

45Cr Alloy Structural Steel

45Cr is a kind of medium carbon and quenched and tempered alloy structural steel. After quenching and tempering, it has high strength and fatigue strength, as well as good low-temperature impact toughness. The surface of 45Cr steel structure is generally gray, and the hardness is higher. When annealing or normalizing, 45Cr steel can also obtain good performance. It is often used in crankshaft, connecting rod and fastener manufacturing.

45Cr steel is used to manufacture parts which require a certain strength and toughness, have good comprehensive mechanical properties and have a certain hardenability and require thermal treatment after quenching and tempering. 45Cr alloy steel is often used to manufacture parts with a small cross-section that require large and reliable transmission and higher durability. It is commonly used to manufacture the crankshaft, connecting rod and other parts of the internal combustion engine and its power system, as well as parts and components that require high strength and high hardness.

45Cr steel has good low-temperature impact properties, good processability, relatively high strength and strong toughness. It is suitable for the manufacture of parts that require a certain comprehensive mechanical properties and medium mechanical and wear resistance, and a certain degree of tempering stability. Commonly used to manufacture the crankshaft, connecting rod, oil pump shaft and other parts for autos and motorcycles. In addition, it is also suitable for the manufacture of high-strength, large-module gears, sprockets and interlocking parts.