Rockwell standard hardness test
Rockwell standard hardness test
Indentation hardness test uses a calibrated machine that utilizes the depth of indentation, under constant load, as a measure of hardness. There are 15 standard hardness scales. The most common are the A, B and C scales. The A and C scales utilize the 120º spheroconical diamond indenter and different major loads: 60 kgf is for scale A; 150 kgf is for scale C. The B scale utilizes the 1¼16" (1.588mm) ball and the major load of 100 kgf. The result is expressed as the Rockwell hardness number. See Brinell hardness test; Knoop hardness test; Scleroscope hardness test; Vickers hardness test.
Indentation hardness test uses a calibrated machine that utilizes the depth of indentation, under constant load, as a measure of hardness. There are 15 standard hardness scales. The most common are the A, B and C scales. The A and C scales utilize the 120º spheroconical diamond indenter and different major loads: 60 kgf is for scale A; 150 kgf is for scale C. The B scale utilizes the 1¼16" (1.588mm) ball and the major load of 100 kgf. The result is expressed as the Rockwell hardness number. See Brinell hardness test; Knoop hardness test; Scleroscope hardness test; Vickers hardness test.