MIL-S-7809 Steel, High-Strength, Low-Alloy, Bars, Shapes, Sheet, Strip, and Plate See Notice 1 for Replacement InformationThis specification covers high-strength low-alloy hot rolled steel bars, shapes, plates, sheet, and strip products intended primarily for use in welded structures.

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lHIL-S- 7809A

steel in which enhanced mechanical propD erties are obtained by the addition of modD erate amounts of one or more alloying elements, other than carbon. Steels of this type are normally furnished in the hot rolled or annealed condition to minimum mechanD ical properties. They are not intended for quenching. The user should not subject them to such treatment without assuming responD sibility for the ensuing mechanical properD ties. Where these steels are used for fabriD cation by welding, no preheat or postheat is

Notice. When Government drawings, specifications, or other data are used for any purpose other than in connection with a definitely related Govornment proD curement operation, the United States Government thereby incurs no responsibility nor any obligation whatsoever; and the fact that the Government may have formulated, furnished, or in any way supplied the said drawings, specifications, or other data is not to be regarded by implication or otherwise as in any manner licensing tho holder or any other person or corporation, or conveying any rights or permission to manufacture, use, or sell any patented invention that may in any way be related thereto.

required. In certain complex structures, stress relieving may be desirable. These steels may be purchased in any of the standD ard forms normally available in carbon steel.

Custodians:

Army-!lR

Navy-Wcps

Air Force-ASD

Preparing a.ctivity:

Nav;-Wcps

Project No. 9515-0013