The Rockwell Hardness Test presses a steel or diamond hemisphere-conical penetrator against a test specimen and measures the resulting indentation depth as a gage of the specimen hardness. The harder the material, the higher the HR reading. In the test, a minor load (10 kgf) is first applie...
HB (Tungsten 3000) 456 Brinell 10 mm Tungsten 3000 kgf 80~620 HB (Indentation) 2.89 mm Brinell Indentation 6~2 HM 4.5 Mohs 1~10 HRA 75 Rockwell A-Scale 59~86 HRB >> Rockwell B-Scale 41~100 HRC 48 Rockwell C-Scale 19~69 HRD 62 Rockwell D-Scale 39~77 HRF >> Rockwell...