astm a709/A709M Standard Specification for Structural Steel for Bridges.
ASTM A709/A709M Standard Specification for Structural Steel for Bridges. ASTM A709/A709M specification 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. ASTM A709/A709M Standard main steel grade: ASTM A709 Grade 36, 50, 50S, 50W, HPS50W (A709GR36,
a709 gr 50, A709GR50S, A709GR50W, A709GRHPS50W)