Hot-rolled plates, often referred to as hot plates, involve the process of heating metal during rolling or prior to rolling. Typically, this involves temperatures above the recrystallization point, resulting in products with a relatively rougher finish compared to their cold-rolled counterparts. The thickness of hot-rolled materials usually starts at around 3mm, with the thinnest sheets generally ranging from 1.5 to 2.0mm. On the other hand, cold-rolled products are created by subjecting hot-rolled materials to additional processing, which enhances their dimensional precision, surface quality, and overall workability. Cold-rolled sheets typically fall within a thickness range of less than 5.0mm, with the most common thicknesses falling between 0.05mm and 3.0mm. However, there are exceptions where materials outside this range exist, though they are less frequently encountered. In summary, while both hot-rolled and cold-rolled products serve distinct purposes and offer different advantages, the choice between them often depends on the specific requirements of the application. Hot-rolled materials excel in scenarios where cost-effectiveness and larger dimensions are prioritized, whereas cold-rolled materials are ideal for applications requiring higher precision and better surface finishes.
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