ASTM E 23-12c Standard Test Methods for Notched Bar Impact Testing of Metallic Materials

Publisher: ASTM
Publish Date: 2012
Pages: 25
Language: English
Format: PDF
Size: 722 kBScope1.1 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 A1) verifying Charpy impact machines (see Annex A2),
optional test specimen configurations (see Annex A3), designation
of test specimen orientation (see Terminology E1823),
and determining the percent of shear fracture on the surface of
broken impact specimens (see Annex A4). In addition, information
is provided on the significance of notched-bar impact
testing (see Appendix X1), and methods of measuring the
center of strike (see Appendix X2).1.2 These test methods do not address the problems associated
with impact testing at temperatures below –196 °C (77 K).1.3 The values stated in SI units are to be regarded as
standard. No other units of measurement are included in this
standard.1.3.1 Exception—Section 8 and Annex A4 provide inchpound
units for information only.1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appropriate
safety and health practices and determine the applicability
of regulatory limitations prior to use. Specific precautionary
statements are given in Section 5.