The A709MGr36 steel plate is a high-strength, low-alloy steel that is used in the construction of bridges and other structural applications. It is a weldable, weathering steel that offers good strength and corrosion resistance.

The chemical composition of A709MGr36 steel plate includes carbon, silicon, manganese, phosphorus, sulfur, nickel, chromium, and molybdenum. The exact chemical composition of the steel plate is controlled to ensure optimal mechanical properties and weldability.

The mechanical properties of A709MGr36 steel plate include a yield strength of 36,000 psi, a tensile strength of 58,000 psi, and an elongation of 22%. These properties make it suitable for use in bridges and other structural applications where high strength and toughness are required.

The A709MGr36 steel plate is typically supplied in the as-rolled condition, which means that it has not been further processed after rolling. However, if desired, the steel plate can also be processed further using shot peening or other surface treatment methods to improve its surface properties and fatigue resistance.

The primary application of A709MGr36 steel plate is in the construction of bridges and other transportation structures. It is used in beams, columns, and decking for bridges, as well as in other structural components where high strength and corrosion resistance are required.

A709MGr36 steel plate has been used in numerous bridge construction projects throughout the United States and Canada. One example is the new Tacoma Narrows Bridge in Washington State, which uses A709MGr36 steel plate in its superstructure. This plate was supplied by American Bridge Company and fabricated by the Northwest Bridge Company. The use of A709MGr36 steel plate in this application provided the necessary strength and corrosion resistance required for this long-span bridge.

In conclusion, the A709MGr36 steel plate is a high-strength, low-alloy steel that is used in the construction of bridges and other structural applications. It offers good strength and corrosion resistance, making it suitable for use in demanding applications such as bridge construction. With its versatile properties and wide range of applications, the A709MGr36 steel plate has become a popular choice for engineers and constructors worldwide.