Hardness Test Method Selection Guide by Application
Material Test Method
Rockwell Vickers Knoop Brinell
Copper alloys, soft steels, aluminum alloys, malleable iron checkmark checkmark checkmark checkmark
Steel, hard cast irons, pearlitic malleable iron, titanium, deep case hardened steel checkmark checkmark checkmark checkmark
Cemented carbides, thin steel and shallow case hardened steel checkmark checkmark checkmark  
Thin steel and medium case hardened steel and pearlitic malleable iron checkmark checkmark checkmark  
Cast iron, aluminum, and magnesium alloys, bearing metals checkmark checkmark checkmark checkmark
Annealed copper alloys, thin soft sheet metals checkmark checkmark checkmark  
Phosphor bronze, beryllium copper, malleable irons, aluminum, zinc, lead checkmark checkmark checkmark checkmark
Bearing metals and other very soft or thin materials checkmark checkmark checkmark  
Tin checkmark checkmark checkmark  
Aluminum checkmark checkmark checkmark checkmark
Zinc checkmark checkmark checkmark checkmark
Paints and organic coatings     checkmark  
Hard rubber checkmark      
Plastics checkmark checkmark checkmark  
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