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Hot Rolled vs Cold Rolled Steel

According to the World Steel Association, there are over 3,500 different grades of steel due to their differences not only in chemical properties but include the physical and environmental properties as well. Each of the grades have their own advantages and uses. Although a material grade can have the same chemical properties, it can still differ based on the manufacturing method. One commonly asked question in the industry is “What is the difference between hot rolled steel and cold rolled steel?”.

Hot rolled steel is usually made from steel billets that are heated above its recrystallization temperature (around 1,000°C). At that temperature, steel is easier to form and products are easier to work with. Hot rolled steel is cooled at room temperature in a process called normalizing. This process increases the material’s toughness and ductility. Due to hot rolled steel cooling at room temperature, it is mostly free from internal stresses that is caused by work hardening processes.

Cold rolled steel is processed more than hot rolled steel since it is rolled again after cooling. In cold reduction mills, the material is formed once again after cooling in order for it to have a smooth and shinier surface. Cold rolled steel is more accurate in terms of shape and are usually more difficult to work with due to its increased carbon content. As cold rolled steel requires an additional process, it is usually more costly than hot rolled steel.

Acersteel Industrial Sales Corporation offers the most complete size selection of high quality steel products in the Philippines. Reach out to our friendly sales staff for competitive prices at (02) 8657-3888 or [email protected]. Send us a message to our official Facebook page, https://www.facebook.com/Acersteel-Industrial-Sales-Incorporated-1580700732144598/ for any inquiries.

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