What are the grades of cold rolled steel?

What are the grades of cold rolled steel?

Cold rolled steel is a popular material widely used in various industries due to its excellent mechanical properties. It undergoes a process called cold rolling, which involves passing the steel through rollers at room temperature to reduce its thickness and enhance its strength. This process provides numerous grades of cold rolled steel with different characteristics, each suitable for specific applications. In this article, we will explore the different grades of cold rolled steel and their unique features.

1. Commercial Steel (CS).

Commercial Steel, also known as CS, is the most basic grade of cold rolled steel. It is commonly used in general applications like appliances, automotive panels, and furniture. CS has a low carbon content and relatively low strength compared to other grades. This makes it easy to form and shape while still offering sufficient strength for everyday use.

2. Drawing Quality (DQ).

Drawing Quality cold rolled steel, designated as DQ, possesses higher levels of formability than CS. It is suitable for applications requiring deep drawing, such as automotive components like fenders and hoods, as well as domestic appliances like sinks and tubs. DQ steel has improved surface quality and a smoother finish, making it ideal for projects where aesthetics are important.

3. Deep Drawing Quality (DDQ).

Deep Drawing Quality, or DDQ, is a grade of cold rolled steel specifically manufactured for applications requiring complex deep drawn parts. It offers even higher levels of formability than DQ, allowing it to stretch and bend without cracking. DDQ steel is commonly used in the production of kitchen sinks, oil filters, and automotive parts like fuel tanks and exhaust pipes.

4. Extra Deep Drawing Quality (EDDQ).

Extra Deep Drawing Quality, or EDDQ, is a specialized grade of cold rolled steel with the highest formability and ductility. It can withstand extreme stretching and bending without fracturing, making it suitable for highly intricate components like automotive door panels and water tanks. EDDQ steel offers exceptional surface quality, ensuring a flawless finish even on complex designs.

5. Bake Hardening (BH).

Bake Hardening, designated as BH, is a unique grade of cold rolled steel that increases in strength after the steel panel is formed and baked in an oven. This process, called bake hardening, enhances the dent resistance of the steel, making it ideal for automotive applications like car bodies and structural components. BH steel is known for its excellent paint adhesion and corrosion resistance.

Closing paragraph:

In conclusion, cold rolled steel comes in various grades, each tailored to specific applications. Whether you require a basic grade like Commercial Steel or a specialized grade like Extra Deep Drawing Quality, there is a cold rolled steel available to meet your needs. If you have any further questions or need assistance in choosing the right grade for your project, please do not hesitate to contact us.

Note: The closing paragraph includes the keyword "contact us" as requested.

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