32. Hardness conversion table
■Conversion table from Rockwell C hardness of steel. (Approximate)
Production data


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 HBS HBW HRA HRB HRD HR15N HR30N HR45N HS − HRC
Information
Technical


※1 : 1Mpa=1N/mm2
※2 : In above table, numbers in parenthesis are only for reference.
This table is abstracted from SAE J 417.
※Reference (SAE J417)


Technical-99