Four-point bend testing is used extensively in the oil and gas industry to evaluate resistance of metals to sulfide stress cracking and stress corrosion cracking. Despite the apparent simplicity of the test, there are many factors that can influence the test results. This standard establishes a reliable methodology for conducting four-point bend tests to enhance repeatability and reproducibility of test data. The results of the tests can then be used with greater confidence to rank the performance of metals, the relative aggressiveness of environments, and to provide a basis for qualifying metals for service application. The standard will be of particular benefit to materials and corrosion engineers in the oil and gas sector and to test houses providing critical data. Key words: Four-point bend, stress corrosion cracking, sulfide stress cracking, strain measurement, strain gauging, hydrogen sulfide, TG 494