The information and data contained in this report are intended as a guide in the selection of steel types and grades for various purposes. Consideration of the individual types of steel is preceded by a discussion of the factors affecting steel properties and characteristics.

SAE steels are generally purchased on the basis of chemical composition requirements (SAE J403, J404 and J405). In many instances, as in the case of steels listed in SAE J1268 and J1868, hardenability is also a specification requirement. This information report can be used as a reference for determining the general characteristics and applications of commonly used SAE steels. The use of the typical heat treatments listed in

Tables 1 through 7 is recommended. These and other heat treatments commonly used on steel are briefly described at the end of this section.