Hardness conversion table

■Conversion table from Rockwell C hardness of steel. (Approximate) ■

Brinell Hardness Rockwell Hardness 2 Rockwell Superficial Hardness

Rockwell Rockwell

Vickers Shore Tensile

C Scale C Scale

Hardness Hardness Strength

Hardness Tungsten Hardness 2

Standard ball A scale B scale D scale 15-N scale 30-N scale 45-N scale MPa 1

Carbide ball

HRC HV HB HRA HRB HRD HS15N HS30N HS45N HS - HRC

1 : 1Mpa=1N/mm2 2 : In above table, numbers in parenthesis are only for reference. This table is abstracted from SAE J 417.