Stainless steel pipes are usually used to measure the hardness of Brinell, Rockwell, and Vickers.
Brinell hardness
In the specification of stainless steel pipes, Brinell hardness is the most widely used, and the hardness of the data is often indicated by the indentation diameter, which is intuitive and convenient. However, steel pipes with harder or thinner steel are not applicable.
Rockwell hardness
The Rockwell hardness test of the stainless steel metal hose is the same as the Brinell hardness test, both of which are indentation test methods. The difference is that it measures the depth of the indentation. The Rockwell hardness test is a widely used method, during which HRC is second only to the Brinell hardness HB in the steel pipe specification. The Rockwell hardness can be applied to determine the metal data from extremely soft to extremely hard, which makes up for the Brinell method No, it is simpler than the Brinell method, and the hardness value can be read directly from the dial of the hardness machine. However, because of its small indentation, the hardness value is not as accurate as the Brinell method.
Vickers hardness
The Vickers hardness test of stainless steel pipe is also an indentation test method, which can be used to determine the hardness of very thin metal materials and surface layers. It has the primary advantages of the Brinell and Rockwell methods, and overcomes their fundamental defects, but it is not as concise as the Rockwell method, and the Vickers method is rarely used in steel pipe specifications.
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