Carbon steel angle is a structural steel product distinguished by its L-shaped cross-section, which is manufactured by bending a piece of carbon steel at a 90° angle. It is widely used in construction and manufacturing to provide structural support, reinforcement, and framing in a variety of applications, including building frames, shelves, brackets, and structural components. Carbon steel angles are available in a wide range of widths and thicknesses to meet a variety of building requirements, making them adaptable and widely used across industries.

Common types of carbon steel used in angles include A36, which is frequently used due to its good weldability and machinability, making it suitable for various structural applications. Another frequent grade is A572, which is noted for having more muscular strength than A36, making it appropriate for demanding structural tasks that require strength. Furthermore, A500 carbon steel is commonly used in angles due to its high tensile strength and corrosion resistance, especially in outdoor or maritime applications.

Carbon steel angles are usually available in standard dimensions, as the American Society for Testing and Materials (ASTM) specifies. These characteristics typically comprise leg length, material thickness, and inclination angle. Leg lengths typically range from 1 inch to 8 inches or more, with thicknesses ranging from 1/8 inch to 1 inch or beyond. The angle of inclination, often known as the "angle size," usually ranges from 30 to 90 degrees.