Cold-rolled & hot-rolled steel
Steel has long been a major component in the construction of virtually any type of structure. Steel is a strong and durable metal that can be used in a variety of applications. There are two main types of steel, cold rolled and hot rolled steel. These two types of steel have distinct characteristics that determine how they should be used. Understanding the differences between these two types of steel can help determine which is best suited for a given application.
Cold rolled steel is a type of steel that has been cold-worked with many pressure rollers. The process of cold-working steel breaks down the grain structure and increases the mechanical properties of the steel. Cold rolled steel has a smooth finish, increased strength, and more precise corner sizes than hot-rolled steel. The process of cold rolling also produces higher quality parts with tighter tolerances than hot rolled steel.
Hot rolled steel is steel that has been worked at high temperatures. These high temperatures are necessary during the process in order to create the desired shape and size of the steel. Hot rolled steel has a characteristic roughness due to the high temperature working of the steel. Hot rolled steel also typically has lower yield strength and is less precise in size than cold rolled steel.
The applications of cold-rolled and hot-rolled steel can vary greatly, depending on the specific needs of a project. Typically, cold rolled steel is used for projects that require more precise shapes and sizes, such as manifolds, crankshafts, gears, and threaded rods. Hot rolled steel is generally used for projects that require flexibility and strength, such as beams and columns. For applications that require a combination of both, the use of cold rolled and hot rolled steel is possible.
Cold-rolled steel and hot-rolled steel are both created through the process of rolling steel. The major difference between the two is the temperature of the steel and the process used. By understanding the properties of each and how they differ, it is possible to determine which type of steel is best suited for a given application.
Whether you are considering cold-rolled or hot-rolled steel for your next project, understanding the key differences between the two is essential for determining which is best suited for your application. Cold rolled steel has higher strength, more precise dimensions and a smoother surface finish and is often used for parts with tighter dimensions. Hot rolled steel is stronger and more flexible, making it ideal for projects that require strength as well as flexibility.
