Cold rolled steel is available in a variety of grades, each with specific properties and uses. These grades are usually defined by industry standards and specifications. Some common cold rolled steel grades are described below:
Commodity Quality (CQ):This is the most common cold rolled steel. It has good surface quality, flatness and thickness tolerances. It is usually used for general applications where no special properties are required.
Drawn Quality (DQ): Cold rolled steel of drawn quality has higher formability than plain steel. It is suitable for deep drawing and deep forming processes, making it the choice for automotive parts and appliances.
Deep Draw Quality (DDQ): DDQ steel offers higher formability than DQ steel. It is used in complex deep drawing applications where the steel must stretch without tearing or wrinkling, such as kitchen sinks and automotive parts.
Extra Deep Drawing Quality (EDDQ): EDDQ steel is the highest quality cold rolled steel for deep drawing applications. It provides excellent formability and is used for the most demanding deep drawing tasks.
Structural Steel (SS): Cold rolled structural steel grades are used in structural applications where strength and load carrying capacity are essential. These include building structures, bridges and other structural components.
High Strength Low Alloy (HSLA): HSLA cold rolled steel combines high strength with improved formability. It is used in applications where both strength and formability are critical, such as automotive chassis components.
Duplex (DP) Steel: DP steel is an advanced high-strength steel with a duplex organization. It offers high strength and excellent formability for automotive and electrical components.
Bake Hardened (BH) Steel: BH cold rolled steel is baked after forming to make it harder and stronger. It is used for automotive panels and other applications that require added strength after molding.
Microalloyed Steel:Microalloyed steel cold rolled steel contains small amounts of vanadium, niobium and other alloying elements that enhance its strength and formability. It is used in a variety of applications, including structural and automotive components.
Electro-galvanized (EG) Steel: Electro-galvanized cold rolled steel is coated with a thin layer of zinc through an electroplating process. This coating is corrosion resistant and is commonly used in the automotive and appliance industries.
These are just a few examples of the many grades of cold rolled steel. The choice of grade depends on the specific requirements of the project or application, including factors such as formability, strength, corrosion resistance and cost considerations. We provide detailed specifications for each grade to help customers select the right material for their needs. Please feel free to contact us if you need assistance.
