Revised in 2005. Addresses testing of metals subjected to tensile stresses for resistance to cracking failure in low-pH aqueous environments containing H2S. The test method facilitates testing conformity so that data from different sources may be compared on an equal basis. Covers sulfide stress cracking (room temperature, atmospheric pressure) and stress corrosion cracking (elevated temperatures and pressures). Discusses environment cracking variability, test reagents and solutions, material properties, test vessels and fixtures, and testing at elevated temperature/pressure. The four test methods described are Method A--Tensile Test; Method B--Bent-Beam Test; Method C--C-Ring Test; and Method D--Double Cantilever-Beam (DCB) Test. General guidelines to determine the appropriateness of each test method also are given. Keywords: austenitic stainless steels, hydrogen sulfide, metals, sulfide stress cracking.