ASTM A709/A709M-21 Specification for Structural Steel for Bridges
ASTM A709/A709M-21 test method determines the carbon and high-strength low-alloy steel structural shapes, plates, and bars, quenched and tempered alloy steel, and stainless steel for structural plates intended for use in bridges. Twelve grades are available in five yield strength levels. The final results of this method are displayed keeping in view the international standards and inch-pound units.

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