Three types of hardness of stainless steel pipes

Stainless steel pipes are widely used in the manufacturing of mechanical parts and engineering structures. So what are the three types of hardness of stainless steel pipes? Let me introduce it to you, hoping to be helpful.
The three types of hardness for stainless steel pipes are as follows:
1, Brinell hardness
In the stainless steel pipe standard, Brinell hardness is widely used, and the hardness of the material is often represented by the diameter of the indentation, which is both intuitive and convenient. However, it is not suitable for steel pipes made of harder or thinner steel.
2, Rockwell hardness
The Rockwell hardness test for stainless steel pipes, like the Brinell hardness test, is an indentation test method. The difference is that it measures the depth of the indentation. The Rockwell hardness test is currently a widely used method, with HRC being second only to the Brinell hardness HB in steel pipe standards. Rockwell hardness is suitable for measuring metal materials from extremely soft to extremely hard. It compensates for the shortcomings of the Brinell method and is simpler than the Brinell method. It 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.
3, Vickers hardness
The Vickers hardness test for stainless steel pipes 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 and overcomes their basic disadvantages, but it is not as simple as the Rockwell method, and the Vickers method is rarely used in steel pipe standards.