The Rockwell scale is a hardness scale based on indentation hardness of a material. The Rockwell test measures the depth of penetration of an indenter under a large load (major load) compared to the penetration made by a preload (minor load). There are different scales, denoted by a single letter, that use different loads or indenters. The result is a dimensionless number noted as HRA, HRB, HRC, etc., where the last letter is the respective Rockwell scale. The Rockwell hardness test can be conducted on several various hardness testers. All testers, however, fall under one of three categories. Bench model hardness testers can be found either in a digital or analog model. Digital bench models utilize a digital display and typically take more technical training to be able to operate. Other testers are portable, and all portable testers will come in a digital model including a digital results screen similar to that of the bench digital model.

The NG-RockGen Analogue Rockwell Hardness Tester determines the hardness of a metal by determining the penetration depth of an indenter under heavy load compared to the penetration made by preload according to the Rockwell hardness scale. Designed to test. You can obtain a quote from NextGen Material Testing by clicking here