7172C

7172C is a specific type of steel, classified under the American Iron and Steel Institute (AISI) system. It is a low-carbon, high-strength, low-alloy steel, which means it contains small amounts of alloying elements to enhance its mechanical properties. The "7" in the designation indicates that it is a low-carbon steel, with a carbon content of less than 0.30%. The "1" signifies that it is a high-strength steel, with a minimum yield strength of 70,000 psi (483 MPa). The "72" refers to the specific alloying elements and their amounts, which in this case are 0.75% manganese and 2.00% chromium. The "C" indicates that the steel is intended for use in cold-formed applications, such as in the manufacturing of structural shapes and other components that require high strength and good formability.

7172C steel is known for its excellent combination of strength, ductility, and formability. It is often used in applications where high strength and good formability are required, such as in the automotive, construction, and appliance industries. Its low carbon content makes it resistant to corrosion, while the chromium content provides additional resistance to oxidation and scaling at elevated temperatures. The manganese content helps to improve the steel's strength and toughness.

The mechanical properties of 7172C steel can be further enhanced through heat treatment processes, such as annealing or quenching and tempering. These processes can help to refine the steel's microstructure, improve its strength and toughness, and reduce its residual stresses. The heat-treated steel can then be cold-formed into various shapes and components, such as beams, channels, and other structural shapes.

In summary, 7172C is a low-carbon, high-strength, low-alloy steel that is well-suited for cold-formed applications. Its excellent combination of strength, ductility, and formability, along with its resistance to corrosion and oxidation, make it a popular choice in various industries.