Composite wear-resistant plate is a low alloy steel, which is then made by hot rolling, cold rolling, or cold drawing. Its hardness is something we need to know. Below is a brief introduction to its three types of hardness:
1. Rockwell hardness
The Rockwell hardness test for composite wear-resistant plates, like the Brinell hardness test, is an indentation test method. The difference is that it measures the depth of indentation, and the Rockwell hardness test is currently a widely used method. Among them, HRC is second only to the Brinell hardness HB in the steel plate standard. Rockwell hardness can be used to measure metal materials from extremely soft to extremely hard. It compensates for the shortcomings of the Brinell method, is simpler than the Brinell method, and can directly read the hardness value from the dial of the hardness machine. However, due to its small indentation, the hardness value is not as accurate as the Brinell method.
2. Brinell hardness
Among the standards for composite wear-resistant plates, Brinell hardness is the most widely used, often represented by the diameter of the indentation, which is both intuitive and convenient. However, it is not suitable for steel plates with harder or thinner steel.
3. Vickers hardness
The Vickers hardness test for composite wear-resistant plates is also an indentation test method that can be used to determine the hardness of very thin metal materials and surface layers. It has the main advantages of the Brinell and Rockwell methods, but overcomes their basic disadvantages. However, it is not as simple as the Rockwell method, and the Vickers method is rarely used in the standards of composite wear-resistant plates.
