The hardness test of stainless steel should consider its mechanical properties, which are related to the function and quality of stainless steel deformation, stamping, cutting and other processing. Therefore, mechanical function tests must be performed on all seamless steel pipes. Here, 3PE anti-corrosion steel pipe manufacturers suggest that the mechanical function testing methods be divided into two categories, one is the tensile test, and the other is the hardness test.
In the tensile test, a 3pe anti-corrosion steel pipe is made into a sample, and the sample is fractured with a tensile tester, and then one or more mechanical functions are measured. Generally, only the tensile strength and yield strength are measured. Elongation and tensile strength. Section shortening rate. Tensile test is the most basic experimental method for the mechanical function of metal materials. It’s all metallic. As long as mechanical functions are required, tensile tests can be performed. Especially for materials whose shape is not convenient for hardness testing, tensile testing has become the only way to test mechanical properties.
In hardness testing, a hard indenter is slowly pressed into the appearance of the sample according to conventional conditions, and then the depth or standard of the indentation is checked to determine the hardness of the data. Hardness testing is the easiest, most active and easiest way to implement data mechanics experiments. In the hardness test, there is an approximate conversion between the data hardness value and the tensile strength value. The hardness value of the data can be converted into a tensile strength value, which is very useful.
Because the 3pe anti-corrosion steel pipe tensile test is not convenient to check, and the hardness is converted into strength, it is more and more convenient to check the hardness of the data. Especially due to the continuous improvement of hardness tester production technology and changes in wind, some originals cannot directly check the hardness of data, such as seamless steel pipes, stainless steel plates and stainless steel strips, etc. Now it can now directly check the hardness. Therefore, there is a tendency that the hardness test gradually replaces the tensile test.
In the 3pe anti-corrosion steel pipe data standard, the tensile test and the hardness test are mostly unified. For materials that are not convenient for hardness testing, such as seamless steel tubes, only tensile tests can be performed. In the stainless steel standard, the three hardness testing methods of cloth, Luo and Wei are generally excluded. Determine HB, HRB (or HRC) and HV hardness values. Only three hardness values can be measured. In particular, the company’s newly developed portable external Rockwell hardness tester and Rockwell hardness tester can perform fast and accurate hardness tests on stainless steel plates, 0.05mm thin stainless steel strips and seamless steel pipes with a thickness of 4.8mm.