Designation: A 36/A 36M – 04 Standard Specification for Carbon Structural Steel1 This standard is issued under the fixed designation A 36/A 36M; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon (e) indicates an editorial change since the last revision or reapproval. This standard has been approved for use by agencies of the Department of Defense. 1. Scope* A 6/A 6M Specification for General Requirements for This specification2 covers carbon steel shapes, plates, Rolled Structural Steel Bars, Plates, Shapes, and Sheet and bars of structural quality for use in riveted, bolted, or Piling welded construction of bridges and buildings, and for general A 27/A 27M Specification for Steel Castings, Carbon, for structural purposes. General Application Supplementary requirements are provided for use where A 307 Specification for Carbon Steel Bolts and Studs, additional testing or additional restrictions are required by the 60 000 psi Tensile Strength purchaser. Such requirements apply only when specified in the A 325 Specification for High-Strength Bolts for Structural purchase order. Steel Joints When the steel is to be welded, a welding procedure A 325M Specification for High-Stren