20CrNiMo alloy structural steel

20CrNiMo Alloy Structure Steel

20CrNiMo alloy structure steel is a kind of high strength and hardenability steel. It has good comprehensive mechanical properties and low temperature impact toughness after quenching and tempering. It is suitable for nitriding treatment and many other surface hardening treatments. Additionally, its constructional feature is that it has good anti-corrosion resistance and wear resistance.

20CrNiMo alloy structure steel is one of the most commonly used medium alloy wheel steel. This steel is formed after rolling or quenching and tempering. The main components are 20Cr-1.5Mo-1Ni-1①C, which are suitable for various stresses and have high strength, good toughness and good hardenability. This kind of steel is mainly used for the production of automotive wheel parts and components.

The main performance characteristics of 20CrNiMo alloy structure steel are:

1. High strength and good hardenability. The strength and hardness of this kind of steel are better than those of ordinary carbon structural steel, which can meet the requirements of parts used in the manufactures and maintenance of the vehicle wheel.

2. Good toughness and low temperature impact toughness. The toughness of 20CrNiMo alloy structure steel can meet the requirements of parts used in the manufactures and maintenance of the vehicle wheel. At the same time, it has good low temperature impact toughness, which can greatly extend the service life of the parts in cold areas.

3. Good machinability. Due to the high content of Cr, Ni and Mo in the steel, after appropriate heat treatment, the machining performance of this kind of steel is good and the cutting power is small. The wear and tear of cutting tools is also lower than that of ordinary carbon structural steel.

4. Nitriding treatment. 20CrNiMo alloy structure steel usually does not need to be surface treated after heat treatment. It has good corrosion resistance of nitrided parts, high wear resistance and good fatigue strength.

Including the characteristics mentioned above, 20CrNiMo alloy structure steel has a wide range of applications, especially for heavy load and impact stress conditions. It is mainly used for the production of automobile wheel parts, transmission parts, construction machinery parts, mining machinery parts, agricultural machinery parts and other parts.

In a word, 20CrNiMo alloy structure steel has good mechanical properties and is suitable for nitriding and other surface hardening processes. It has a wide application in automobiles and other production industries. Currently, most automotive wheel castings and parts are made of 20CrNiMo alloy structure steel. The high production cost of this steel limits its application in industry, but its excellent properties make it a popular choice for many industries.

20CrNiMo alloy structure steel is a widely used medium strength steel, which has good comprehensive mechanical properties. After proper heat treatment, it has the characteristics of high strength, toughness and plasticity. The steel is widely used to manufacture parts of stressed parts and low speed heavy loading parts, such as bevel gear, pinion gear, gear shaft, screw, railway vehicle axle, traction engine transmission gear, connecting rod, connecting rod, piston rod, spring and other parts.

20CrNiMo alloy structure steel is a low carbon alloy structural steel. The chemical composition of this steel is Cr 0.17~0.23, Ni 0.20~0.30, Mo 0.20~0.30, Mn 0.6~0.9, Si 0.17~0.37, C 0.16~0.25 respectively. In terms of intensity, the tensile strength of this steel is 590MPa~740Mpa, and the yield strength is greater than 225Mpa. The weldability of this steel is good, the wear resistance is moderate, and the toughness and plasticity characteristics are also good.

20CrNiMo alloy structural steel is used to manufacture parts of medium and large load trains under low speed, low tension and medium impact conditions, such as gears, shafts, crankshafts, connecting rods, bolts, carburizing parts and other components. In order to further improve the performance of the steel, 20CrNiMo alloy structural steel can also be used by mutual phase transformation quenching and tempering method.

20CrNiMo alloy structural steel has good machinability and is widely used in normalizing or quenching and tempering state. If the purpose of using this steel is low speed and heavy power transmission, the steel can be carburized. 20CrNiMo alloy structural steel has good hardenability, after carburizing, efficient quenching and tempering treatment, the surface of the parts will be more wear-resistant. In addition, it is suitable for nitridation treatment and hot black treatment.