SAE J410

Description / Abstract: High strength, low alloy steel represents a specific group of steels in which enhanced mechanical properties and, in some cases, resistance to atmospheric corrosion are obtained by the addition of moderate amounts of one or more alloying elements other than carbon. Different types are available, some of which are carbon-manganese steels and others which contain further alloy additions, governed by special requirements for weldability, formability, toughness, strength, and economics. Descriptions of the different grades are given in the paragraph entitled General Information. These steels may be obtained in the form of sheet, strip, plates, structural shapes, bars, and bar size sections.

These steels are especially characterized by their mechanical properties, obtained in the as-rolled condition. They are not intended for quenching and tempering, and the purchaser should not subject them to such treatment without assuming responsibility for the ensuing mechanical properties. For certain applications these steels are sometimes annealed, normalized, or stress relieved with some influence on mechanical properties.

Where those steels are used for fabrication by welding, care must be exercised in selection of grade and in the details of the welding process. Certain grades may be welded without preheat or postheat.