Carbon Structural Steel in USA
Carbon structural steel is one of the most commonly used and widely available materials in the United States. Carbon structural steel is available in multiple grades, with properties suitable for a wide variety of uses. As a general rule, carbon structural steel in the United States is identified by a standard number system established by the American Iron and Steel Institute (AISI).
Carbon structural steel is primarily composed of carbon, while other elements are used in small amounts to enhance the material’s properties. These elements may include manganese, sulfur, phosphorus, and silicon. The most common grade of carbon structural steel in the US is A36. This material is rated as “medium” in terms of strength and ductility when compared to other grades of steel. A36 steel is often used in the construction of bridges, buildings, and other structures, as well as in the manufacturing of automotive and agricultural machinery. A36 steel has a relatively low strength-to-weight ratio, making it suitable for lightweight structures.
Certain other grades of carbon structural steel have increased strength and/or ductility compared to A36. For example, A572 is a steel grade that has increased strength and ductility when compared to A36 steel. This is due to the addition of elements such as manganese and silicon, which increase the material’s strength and work-ability. A572 steel is often used in the construction of bridges with higher load or load bearing requirements compared to A36.
Other grades of carbon structural steel include A588, which is similar to A572, but with an increased degree of corrosion resistance. This grade is usually used in the construction of bridges and other structures exposed to the elements, such as railroads, marine applications, and industrial facilities. A516 and A514 are also grades of carbon structural steel, with properties suitable for use in pressure vessels and other applications where high strength and/or ductility are required.
Carbon structural steel is commonly produced in a variety of shapes, such as plates, bars, sheet, structural shapes, and tubing. These shapes are usually produced through processes such as rolling, extruding, forging, and casting. Carbon structural steel is also available in a variety of finishes, such as hot rolled, cold rolled, and pickled and oiled.
Carbon structural steel is widely used in the United States due to its relatively low cost, strength, and ductility. A variety of grades are available to suit a variety of applications. Understanding the different grades of carbon structural steel and their characteristics will help to ensure that the most suitable material is used for a particular application.
