How to test the hardness of stainless steel seamless steel pipe products?

Stainless steel seamless steel pipes are also very useful in many buildings, and the use of stainless steel seamless steel pipes requires hardness testing. There are still many points that need attention in testing, and its use is very broad. Let's talk about how to check the hardness of stainless steel seamless steel pipe.

Hardness testing is a simple, fast and easy to implement method for testing mechanical properties of materials. The hardness test is non-destructive and there is an approximate conversion relationship between the hardness value of the material and the tensile strength value. The hardness value of the material can be converted to the tensile strength value, which has important practical significance. Because tensile testing is not easy to test, and it is convenient to convert hardness to strength, more and more people only test the hardness of the material, and rarely test the strength of the material.

Especially because of the continuous progress and innovation in hardness tester manufacturing technology, some materials that could not be directly tested before, such as stainless steel tubes, stainless steel plates and stainless steel belts, can now be directly tested for hardness. Therefore, it is a trend that hardness test gradually replaces tensile test. In most stainless steel material standards, both tensile tests and hardness tests are specified. For materials that are not convenient for hardness testing, such as stainless steel pipes, only tensile tests are prescribed. In the stainless steel standard, there are usually three hardness testing methods, namely Brough, Rockwell and Vickers hardness tests, to measure the hardness values of HB, HRB(or HRC) and HV. Only one of the three hardness values can be measured.

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