This SAE Standard covers sub-critically annealed or normalized electric resistance welded flash controlled single-wall high strength steel tubing intended for use in hydraulic pressure lines and in other applications requiring tubing of a quality suitable for bending, double flaring, cold forming, welding and brazing. Material produced to this specification is not intended to be used for single flare applications due to the potential leak path caused by the ID weld bead. Nominal reference working pressures for this tubing are listed in ISO 10763 for metric tubing and SAE J1065 for inch tubing.
This specification also covers SAE J2613 Type-A tubing. The mechanical properties and performance requirements of standard SAE J2613 and SAE J2613 Type-A are the same. The designated differences of Type-A tubing do not imply that Type-A tubing is in anyway inferior to standard SAE J2613. The Type-A disignation is meant to address the unique manufacturing differences between sub-critically annealed and normalized tubing.