The depth of plastic deformation of the indentation is used to calculate the carbon steel hardness Rockwell index, and 0.002 mm is utilized as the hardness unit. When performing the Rockwell hardness test, several indenters and test forces are used. These diverse combinations provide different Rockwell hardness scales. Three rulers are frequently employed, and nearly all popular metal materials can be used with them.

The hardness of carbon steel When the sample is too small, or the Brinell hardness (HB) is higher than 450, the Rockwell (HR) test is used to determine the hardness. The test involves pressing a steel ball or a diamond cone with a 120-degree apex angle into the surface of the material to be tested while applying a specific load. The material is then extracted from the depth of the indentation.

NextGen’s Telebrineller Brinell Hardness Testing System Standard Test Bars are made of various alloys of carbon steel and finish ground to 9/16″ square.

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