In order to measure a material’s hardness, the hardness tester makes a penetration on it, leaving a mark (called “witness”) on tested point. This test can be defined a not-destructive test, since the tested component may keep its own integrity and functionality.
• Fixed hardness tester Wolpert Brinnell 3000 kg
• Portable digital testers Equotip 2000
• Rockwell hardness testers
• Vickers hardness testers