There are three kinds of hardness tests used by the metal industry today;
- Rockwell: Please check out our top of the line Rockwell hardness testers
The process by which the three of these hardness tests measure a metal’s hardness is by determining the metal’s resistance to the penetration of a non-deformable ball or cone. These three hardness testing procedures determine the depth which such a ball or cone will sink into the metal, under a specified load. The distance traveled is measured and converted to a Rockwell number. The following list are the most widely used hardness testing methods that are being run in the massive metals industry:
- Rockwell hardness– This type of test is based on the net increase in depth of impression as a load is applied
- Brinell hardness- This test is determined by forcing a hard steel or carbide sphere of a specified diameter under a specified load into the surface of a material and measuring the diameter of the indentation that is left after the test.
- Vickers– The standard method for testing metal with a very hard surface.
- Knoop hardness– This method is used to test the relative micro-hardness of a material
- Shore– This test measures hardness in terms of the elasticity of a material