Phenol ketone products

Plastic rubber

Current Location： Home > News > Chemical Knowledge > What is the hardness of HS? Understand the HS hardness index, let you choose material more handy!

[Chemical Knowledge]：What is the hardness of HS? Understand the HS hardness index, let you choose material more handy!

Read： 1543 Time：18months ago Source：Transform the World with Simplicity

With the development of industrial technology, people's demand for materials is becoming higher and higher. As an important material performance index, hardness has been widely concerned. The HS hardness index as a more common index in the hardness test, has been widely used, then, what is the hardness of HS.

1. The meaning of the HS hardness index

HS is a unit used for hardness testing of metallic materials. HS refers to "Hardness Shore" and has a hardness in the range of 20 to 70HS. Generally speaking, the HS hardness index is a "spring hardness measurement" method. By pressing a spherical or conical metal hardness tester on the surface of the test sample, and then observing the scale on the surface of the hardness tester, the hardness value of the test sample can be obtained. Specifically, the hardness tester deduces the hardness value of the test sample by pressing a metal ball or cone into the surface of the test sample and measuring the depth of deformation generated.

2. HS hardness test method

HS hardness test is a relatively simple hardness test method. Before the test, it is necessary to prepare the hardness tester and test samples. The conical or spherical terminal of the hardness tester is pressed on the surface of the test sample, and a more uniform pressure is applied at a certain rate, and then the value on the hardness tester is read to obtain the hardness value of the test sample.

in the HS hardness test, need to pay attention to the following points:

1, the surface of the test sample should be flat, the surface should be free of protrusions, depressions, scratches, rust, etc., to ensure the accuracy of the test results;

2, the test needs to be carried out several times, the average value to improve the reliability of the test results;

3. Different test pressures, spherical terminal radius and cone half angle will affect the test results and should be adjusted according to actual conditions.

3. HS hardness index

HS hardness index in the metal material application range is very wide, including steel, copper, aluminum, tin, zinc, brass and so on. At the same time, the HS hardness index can also be applied to the hardness test of non-metallic materials such as plastics, rubber and wood. The reason why

HS hardness index is widely used is mainly because of its simple test method, low cost and high effectiveness. Moreover, the HS hardness value also has a good correlation with other hardness indicators, so it can often be used as one of the basis for material selection.

4. summary

Through the introduction of this article, we understand what hardness HS hardness index is, its test method and application range. HS hardness index is a common index in the hardness test of metal materials, which has the characteristics of simple and low cost, and its test results have good correlation with other hardness indexes. Hardness index is an important index to evaluate the hardness performance of materials, and the selection of appropriate hardness test index can improve the quality and performance of materials, which is of great significance for industrial applications.