If you are planning to test a large sample of material, you should consider using the Rockwell Hardness Tester. The machine has a superior design and offers highly accurate readings. With its design, frictional inconsistencies will be eliminated. In fact, the only contact points featured in this machine are bearings on the lever beams, which are used to hold the minor load. This tester uses the methods defined in ISO 6508 and ASTM E18, and this is the most commonly used method in the world to check the hardness of a metal and even some plastics. A benefit of using this tester is that it allows you to complete the process quickly without spending long periods preparing the surface, and the hardness values will be displayed instantly.
The Rockwell Test Calculation
In order to run the Rockwell hardness test calculation (HR), you will need to use a tungsten carbide ball to create an indentation on the materials. You can then measure the depth of this indentation. It is important to note that the tungsten balls come in four different sizes, and you can also choose to use a diamond cone instead of the ball. You can use one of six main loads to run the tests, and these range from 15kgf to 150kgf. By combining these loads and the indenters, you will get a total of 30 different scales.