Standard Method of Test for
Rockwell Hardness and Rockwell Superficial
Hardness of Metallic Materials
AASHTO Designation:T 80-08
ASTM Designation:E 18-07
AASHTO T 80-08 is identical to ASTM E 18-07 except that all references to the ASTM standards
contained in ASTM E 18-07, listed in the following table, shall be replaced with the corresponding
AASHTO standard:
Referenced Standards
ASTM AASHTO
B 152 M 138M/M 138
E4 T67
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