24 July 2021 Gear Steel Bar
20CrNi2MoH Gear Steel Bar
20CrNi2Mo steel is a high-quality low-carbon steel. Due to its low content of alloying elements, the synergistic effect of various alloying elements is better. It is listed as the recommended standard grade in major industrial countries in the world. 20CrNi2Mo steel can be used as surface-strengthened carburized steel for carburized gears, carburized bearings and other parts; it can also be applied to requirements such as excavator bucket teeth (pick teeth) and agricultural machinery wear parts after low temperature tempering. On wear-resistant and impact-resistant parts.
20CrNi2MoH is widely used in petroleum, chemical, power station, boiler and other industries, for the production of reactor, heat exchanger, separator, spherical tank, no gas tank, liquefied gas tank, nuclear reactor reactor shell, boiler drum Oil cylinders, high pressure water pipes, water turbine volute and other equipment and components.
The deformation tendency of 20CrNi2Mo steel is significantly lower than that of 20Cr2Ni4 steel. Its carbon concentration gradient distribution is reasonable, the hardening performance is good, the content and distribution of residual austenite in the surface layer are ideal, and the heat treatment process performance is better than 20Cr2Ni4 steel. Can replace 20cr2Ni4.
Chemical Composition:
| C | Si | Mn | S | P | Cr | Ni | Mo | Cu |
|---|---|---|---|---|---|---|---|---|
| 0.17~0.23 | 0.20~0.35 | 0.40~0.70 | ≤0.030 | ≤0.030 | 0.35~0.65 | 1.60~2.00 | 0.20~0.30 | ≤0.30 |
20CrNi2Mo equivalent to SAE4320 in the United States, SNCM420 in Taiwan and Japan, 20CrNi2Mo in China GB standard.