In the metallurgical and materials industries, hardness testers are used to test the hardness of steel (carbon steel, alloy steel, stainless steel) and non-ferrous metal alloys (aluminum, copper alloys) for quality control and process optimization. In the machinery manufacturing and processing industry, hardness testers are used to test the hardness of components such as gears, bearings, and bolts to ensure compliance with design requirements, and to test the hardness of raw materials to guide processing techniques. For heavy workpieces and on-site testing, portable Leeb hardness testers are suitable for rapid on-site hardness testing of immobile workpieces such as installed machinery, large molds, pressure vessels, steam turbine generators, machine tool guideways, and large forgings/castings. In the power and petrochemical industries, hardness testers are used for hardness testing and failure analysis of equipment components such as power plant boilers, steam turbines, oil drill pipes, oil pipes, and valves. In the automotive industry, hardness testers are used to test the hardness of automotive components such as engines, transmissions, and chassis. The pharmaceutical industry uses dedicated tablet hardness testers to test the hardness of tablets to ensure their molding quality and disintegration performance. In the coating and surface treatment industry, pencil hardness testers are used to evaluate the surface hardness of paint films, coatings, and decorative panels. Hardness testers are also used in materials science research and teaching experiments in related majors at colleges and universities. In addition, high-precision, miniaturized portable hardness testers are used by NASA, Boeing, Airbus and other organizations in the aerospace field for non-destructive testing.
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