Rockwell Hardness of Metallic Materials

Rockwell Hardness of Metallic Materials

One type of empirical indentation hardness test is the Rockwell test. The two indentations created in a material are compared using the Rockwell hardness method. The first was created with a light load and the other with a heavy load. The test leaves just a tiny indentation in the material and is quick, cheap, and relatively non-destructive.

The significance and use of Rockwell hardness of metallic materials are as mentioned below:

• The Rockwell hardness test provides valuable insight into metallic materials by correlating it with other material qualities like tensile strength, ductility and wear resistance. 
• The test is often useful for product acceptability testing, quality control and material selection. 
• Rockwell hardness tests have been widely utilized in industry for this purpose and are regarded as suitable for acceptance testing of commercial shipments.
• Rockwell hardness testing is performed at a specific position on a part and might not accurately reflect the physical properties of the entire part or finished product.
• Unless as otherwise specified the adherence to this standard test technique ensures traceability to national Rockwell hardness requirements.

Thus, Rockwell hardness machines are used in practically every testing environment in modern manufacturing facilities.

Video 01: Rockwell Hardness Test

Conclusion :

The Rockwell hardness test is a widely used and versatile method for measuring the hardness of metallic materials. The test measures the depth of penetration of a diamond or ball indenter under a specified load and provides a numerical value that is directly related to the hardness of the material.