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.
Note 1: This specification does not cover high-strength low-alloy (HSLA) post. Refer to Specification for HSLA. For structural Grade 36, refer to Specification .
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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