A709-50F-2 and A709-50T-2 steel are both American standard bridge structural steels, which are used to make highway bridges and railway bridges (including sea-crossing bridges) of riveted and bolted structures.
A709 refers to the American standard: ASTM A709/A709M structural steel for bridges; 50 is the grade in the ASTM A709/A709M standard, that is, structural steel for bridges with yield strength ≥ 345MPa; F: critical fracture tensile member, used for critical fracture Products for tensile elements in structures; T is a tensile element for non-critical fractures, products for tensile elements in non-critical fracture structures; grades without the T or F suffix do not require impact testing, but may only be used for Non-tensile members or secondary members; 2 is the Charpy V-notch impact test area code, also called grade.
Welcome to consult BBN steel for more information about ASTM A709 steel: A709 Grade 36, A709 grade 50, A709 Grade 50S, A709 Grade 50W, A709 Grade HPS50W, A709 Grade HPS70W, A709 Grade 100, A709 Grade 100W, A709 Grade HPS100W.
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