Seamless steel tubes are commonly used in general, the Vivtorinox three hardness indicators to measure the hardness. Seamless steel tubes, the hardness test of the same hardness test is the same as the indentation test method. The difference is that it is measuring the depth of indentation. The hardness test is a widely used method, in which HRC is used in the standard of steel tube, which is only second to the hardness of HB. Rockwell hardness can be applied to the determination of metal materials from very soft to very hard, it makes up for Bridgman is not a Brinell hardness value method is simple, can be read directly from the dial hardness machine. However, due to its small indentation, the hardness is not as accurate as the method of the.

In the standard of seamless steel pipe, the most widely used, the indentation diameter is often used to indicate the hardness of the material, both intuitive and convenient. But it is not applicable to the hard or thin steel. Vivtorinox hardness testing of seamless steel tube is an indentation test method, which can be used to measure the hardness of thin metallic materials and surface layer. It has the main advantages of the method of the method of the law of the family and the law of the law, but it is simple and easy to use, but it is not easy to use the method of the Vivtorinox method.

The hardness test of the stainless steel should take into account its mechanical properties, which is related to the performance and quality of stainless steel as raw material, such as deformation, punching, cutting and so on. Therefore, all of the seamless steel pipe to be tested for mechanical properties. Mechanical properties testing methods are mainly divided into two categories, one is tensile test, one is the hardness test.

Hardness test is a hard pressed head according to the provisions of the slowly pressed into the surface of the sample, and then test the indentation depth or size, in order to determine the size of the hardness of the material. Hardness test is one of the most simple, rapid and easy to implement method for mechanical properties of materials. The hardness test is non destructive, and there is an approximate conversion relationship between the value of the material hardness and the tensile strength. The hardness value of the material can be converted into the tensile strength value, which has great practical significance.