主要用于一般用途的是轻壁厚型材，其中要求最小抗拉强度高达160000 psi（1105 MPa），零件可在制造过程中焊接。自1988年4月19日起，SAE航空航天材料部已宣布本规范为“非现行”。因此，建议本规范不适用于新设计。

Primarily for general use is light wall-thickness sections where minimum tensile strength up to 160,000 psi (1105 MPa) is required and parts may be welded during fabrication. This specification has been declared "Noncurrent" by the Aerospace Materials Division, SAE, as of April 19, 1988. It is recommended, therefore, that this specification not be specified for new designs.