Correlations were found between the fractography of stress corrosion cracked surfaces and the macrostructure of shielded metal arc weldments of a 5Ni-Cr-Mo steel. The fractography of the stress corrosion regions revealed fracture modes consisting of cleavage, microvoid coalescence, and intergranular separation. Cleavage was often associated with a coarse irregular fracture, whereas with microvoid coalescence the fractures were generally flat. Fractures of intergranular separation were characterized by dot-like facets on the macrographs. The macrostructures corresponding to intergranular separation consisted largely of coarse equiaxed grains and to a lesser extent of columnar grains. The latter quite often were too large to be completely revealed by transmission electron microscope fractography and in some instances were more favorably oriented for transgranular failure by cleavage than for intergranular failure.