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This specification covers flanged U-channel carbon steel posts having a nominal weight ranging from 0.75 to 6.0 lb/ft and a nominal width ranging from 1.25 to 4.0 in. These posts are furnished in the as-wrought condition intended for applications requiring high tensile strength or crashworthiness and with a lower carbon (LC) designation for use where higher ductility or improved weldability are required. This specification indicates that tension tests and tensile tests are conducted on the flanged steel U-channel posts, and notes that retesting for failed mechanical properties may be permitted.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
1.1 This specification covers flanged U-channel carbon steel posts having a nominal weight ranging from 0.75 to 6.0 lb/ft and a nominal width ranging from 1.25 to 4.0 in. These posts are furnished in the as-wrought condition intended for applications requiring high tensile strength or crashworthiness and with a lower carbon (LC) designation for use where higher ductility or improved weldability are required. These materials are available in multiple yield strength levels of 50, 60, 70, and 80 ksi (345, 420, 485, and 550 MPa). The 50- and 60-ksi (345- and 420-MPa) yield strength grades are available as lower carbon posts, designated as Grades 50LC or 60LC.
1.2 Units—The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
A1 Specification for Carbon Steel Tee Rails
A6/A6M Specification for General Requirements for Rolled Structural Steel Bars, Plates, Shapes, and Sheet Piling
A29/A29M Specification for Steel Bars, Carbon and Alloy, Hot-Wrought, General Requirements for
A36/A36M Specification for Carbon Structural Steel
A123/A123M Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
A499 Specification for Steel Bars and Shapes, Carbon Rolled from T Rails
A572/A572M Specification for High-Strength Low-Alloy Columbium-Vanadium Structural Steel
AASHTO StandardAASHTO Manual for Assessing Safety Hardware Available from American Association of State Highway and Transportation Officials (AASHTO), 444 N. Capitol St., NW, Suite 249, Washington, DC 20001, http://www.transportation.org.
ICS Number Code 77.140.70 (Steel profiles)