AASHTO Designation: T 266-08 pdf free download

Standard Method of Test for

Notched Bar Impact Testing of Metallic

Materials (CVN)

AASHTO Designation: T 266-08

ASTM Designation: E 23-07a

AASHTO T 266-08 is identical to ASTM E 23-07a except that the Izod Method is not included.

Scope

1.1 These test methods describe notched-bar impact testing of metallic materials by the Charpy (simple-beam) test and the Izod (cantilever-beam) test.

They give the requirements for; test specimens, test procedures, test reports, test machines (see Annex Al) verifying Charpy impact machines (see Annex

A2), optional test specimen configurations (see Annex A3), pre• cracking Charpy V-notch specimens (see Annex A4), designa• tion of test specimen

orientation (see Annex AS), and deter• mining the percent of shear fracture on the surface of broken impact specimens (see Annex A6). In addition,

information is provided on the significance of notched-bar impact testing (see Appendix XI), methods of measuring the center of strike (see Appendix X2).

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