A36 Mild Steel Plate and Structure Steel Analysis

A36 steel is one of the most commonly used mild steels in the world, particularly in the United States under ASTM A36 standards. It is known for its good weldability, excellent machinability, and cost-effective strength, making it ideal for general structural purposes.

The typical chemical composition of A36 includes carbon (0.25–0.29%), manganese, silicon, and trace elements such as phosphorus and sulfur. This balanced composition provides moderate tensile strength while ensuring the steel remains easy to form and fabricate.

A36 steel is generally supplied in hot-rolled condition, although normalized and stress-relieved states are available for applications requiring improved mechanical consistency. Its properties make it suitable for welding, drilling, bending, and cutting.

A36 is widely applied in construction beams, steel plates, tanks, machinery parts, building frames, bridges, and agricultural equipment. It is especially favored in heavy-duty structures where cost and versatility are priorities.