This standard specifies the principles, test equipment, specimens, test procedures, test result processing and test reports for metal Rockwell hardness tests. This standard applies to the determination of the Rockwell hardness value of metals.
HB 5172-1996 history
1996HB 5172-1996 Rockwell hardness test method for metals
1970HB 5172-1981 Rockwell hardness test method for metals