Hot Rolled Steel Plate 6mm

Hot Rolled Steel Plate 6mm is one of the core steel product categories mainly produced by Sanhe Steel. It is manufactured using continuous casting billets or initial rolling billets as raw materials, following standardized production processes to ensure stable product performance. The specific production process is as follows: After the raw materials are heated in a stepwise heating furnace, they undergo water jet descaling to remove surface oxides and impurities, and then enter the rough rolling machine for initial rolling; the rough rolled billets are processed by cutting the head and tail, and then sent to the finishing rolling machine, where the computer-controlled rolling process is adopted to ensure the rolling accuracy; after the final rolling, the cooling rate is controlled by a computer for laminar cooling, and finally, it is wound by the coiler to form a straight coil. As an entity manufacturer, Sanhe Steel strictly follows this production process and strictly controls each step throughout the process, meeting the strict safety performance requirements of industrial and commercial environments.

Common Defects Explanation

The straight coil of Hot Rolled Steel Plate 6mm has some common natural production defects. Sanhe Steel, adhering to the principle of honest operation, informs customers truthfully to facilitate customers' reasonable selection based on the usage scenarios. The heads and tails of the straight coil often present a tongue-like and fish tail-like shape, and the thickness and width accuracy are relatively poor, unable to meet the strict requirements of high-precision scenarios; at the same time, the edges of the sheet often have wave-shaped, folded edges, and tower-shaped defects. These defects are all normal phenomena that are difficult to completely avoid during the hot rolling process and do not affect the use in regular scenarios. If customers have high-precision requirements, Sanhe Steel can conduct subsequent processing using its own rolling and leveling equipment to optimize the product accuracy.

The core difference between hot-rolled steel plate and cold-rolled steel plate

There are significant differences between hot-rolled steel plate (6mm) and cold-rolled steel plate. Sanhe Steel, based on its years of industry experience, clearly distinguishes them for customers in terms of composition and production process. In terms of composition, the carbon content of Hot Rolled Steel Plate 6mm can be slightly higher than that of cold-rolled steel plate. When the composition is similar, the density of both is the same. If the composition is significantly different (such as stainless steel), regardless of whether it is cold-rolled or hot-rolled, the density is approximately 7.9g/cm³. The specific value depends on the actual composition, and hot-rolled steel plate has better ductility and can also withstand pressure. In terms of process, the core difference between the two is determined by the recrystallization temperature: 6mm hot-rolled steel plate is rolled at high temperatures, while cold-rolled steel plate is rolled at room temperature. Cold-rolled is generally used for producing strips, with a higher rolling speed, while hot-rolled can produce thicker plates. The 6mm specification is the conventional applicable thickness for hot-rolled steel plate.

The performance and appearance differences between hot-rolled steel plates and cold-rolled steel plates

Apart from composition and process, there are also significant differences in performance, appearance and price between hot-rolled steel plates and cold-rolled steel plates. In terms of performance, cold-rolled steel plates have better strength, while 6mm hot-rolled steel plates have better ductility; due to the certain degree of work hardening during cold rolling, cold-rolled steel plates have lower toughness, but better yield-to-strength ratio, which can be used to manufacture parts such as cold-formed spring sheets, but their yield point is close to the tensile strength, so accidents are more likely to occur when the load exceeds the allowable load; Hot Rolled Steel Plate 6mm has poorer mechanical properties than cold processing and forging, but has better toughness and ductility. In terms of appearance, cold-rolled plates are processed by cold rolling, with no oxide scale on the surface, and the quality is better; hot-rolled plates are processed by hot rolling, with oxide scale on the surface, and there is a thickness difference; un-electrified hot-rolled plates have a dark brown surface, un-electrified cold-rolled plates have a gray surface, and the smoothness of electrified cold-rolled plates is higher than that of hot-rolled plates. In terms of price, hot-rolled steel plates have poorer toughness and surface flatness, and the price is relatively lower; cold-rolled plates have good extensibility and toughness, but are more expensive.

Regarding Sanhe Steel

Sanhe Steel is a professional manufacturer and supplier of Hot Rolled Steel Plates 6mm. Leveraging the advantages of its physical factory, we always have an ample stock of 6mm hot rolled steel plates with various specifications. We not only strictly control the production process to ensure that the products meet industry standards, but also can provide customized cutting and rolling services based on our own processing capabilities, optimizing product accuracy and solving the defects of direct rolls. At the same time, Sanhe Steel offers full-process consulting services to help customers clearly distinguish the differences between hot rolled and cold rolled steel plates, precisely match usage requirements, strictly control product quality, and provide efficient logistics delivery and comprehensive after-sales support.