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AASHTO M 270M/M 270-20
M00000676
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AASHTO M 270M/M 270-20 Standard Specification for Structural Steel for Bridges (ASTM Designation: A 709/A 709M-18)
standard by American Association of State and Highway Transportation Officials, 2020
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AASHTO M 270M/M 270-20 covers carbon and high-strength low-alloy steel structural shapes, plates, and bars and quenched-and-tempered alloy steel for structural plates intended for use in bridges. Nine grades are available in four yield strength levels.When the steel is to be welded it is presupposed that a welding procedure suitable for the grade of steel and intended use or service will be utilized.
For structural products to be used as tension conmpnenets requiring notch toughness testing, standardized requirements are provided in this standard. These requirements are based upon AASHTO requirements for both fracture-critical and non-fracture-critical members.