1.1 这些试验方法描述了通过夏比（简支梁）试验和Izod（悬臂梁）试验对金属材料进行的缺口棒冲击试验。它们给出了以下要求:试样、试验程序、试验报告、试验机（见 附件A1 )验证夏比冲击试验机（参见 附件A2 )，可选试样配置（参见 附件A3 )，试样方向的名称（见术语 E1823 )，并确定剪切断裂的外观（参见 附件A4 ). 此外，还提供了有关缺口重要性的信息- 棒材冲击试验（参见 附录X1 )，以及测量打击中心的方法（请参见 附录X2 ). 1.2 这些试验方法不能解决在低于-196°C（77 K）的温度下进行冲击试验的相关问题。 1.3 以国际单位制表示的数值应视为标准。本标准不包括其他计量单位。 1.3.1 例外 部分 9 和 附件A4 提供英寸磅单位仅供参考。 1.4 本标准并不旨在解决与其使用相关的所有安全问题（如有）。 本标准的使用者有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 具体的预防说明见第节 6. . 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ====意义和用途====== 5.1 这些冲击试验的试验方法特别涉及金属在承受单一作用力时的行为，该作用力导致与缺口相关的多轴向应力，再加上高加载速率，在某些情况下还伴有高温或低温。对于某些材料和温度，已发现缺口试样的冲击试验结果与使用经验相关联，可以准确预测脆性断裂的可能性。 有关重要性的更多信息，请参阅 附录X1 .

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 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 shear fracture appearance (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 9 and Annex A4 provide inch-pound 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Specific precautionary statements are given in Section 6 . 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 These test methods of impact testing relate specifically to the behavior of metal when subjected to a single application of a force resulting in multi-axial stresses associated with a notch, coupled with high rates of loading and in some cases with high or low temperatures. For some materials and temperatures the results of impact tests on notched specimens, when correlated with service experience, have been found to predict the likelihood of brittle fracture accurately. Further information on significance appears in Appendix X1 .