What's the difference between hot rolled and cold rolled aluminum sheet?

2022-03-18 09:17:05
Cold-rolled aluminum sheet is also called cast-rolled aluminum sheet. The difference between cold-rolled aluminum sheet and hot-rolled aluminum sheet is in terms of price, billet supply, production technology, performance, use, and finished products.

                                                                       cold rolled aluminum sheet

1. Price: The cold-rolled aluminum sheet has a simple process and the price is cheaper than hot-rolled aluminum sheet.

2. The blank supply is different: the difference between the two lies in the blank supply. Hot-rolled material: aluminum --melted and cast into flat --milled face--homogenization annealing--hot rolled into strip

Cast-rolled materials: aluminum -smelted-rolled into strips by casting and rolling mills. In contrast, cast-rolled materials have high production efficiency, but defects such as component segregation and inclusions are not easy to solve, and the quality is not as good as hot-rolled materials.

3. The production process is different: cold rolling is processed by a casting machine into cast rolls (8mm thickness) and processed by a cold rolling machine, while hot rolling is heated by an aluminum (400-500mm thickness), which is heated at high temperatures. Rolled by hot rolling mill;

4. Different properties: The hot-rolled aluminum sheet has good surface quality, strong mechanical properties and ductility, and good oxidation effect. At the same time, the processed aluminum wafers are generally processed from aluminum sheets, and naturally they are also affected by the properties of aluminum sheets;

5. For different purposes, cold-rolled aluminum sheets are mostly used in molds, and hot-rolled aluminum sheets are suitable for stamping and drawing.

6. The difference between finished products: Usually, the elongation of the cold-rolled final product is lower than that of the hot-rolled final product. If it is a cast-rolled or hot-rolled product, the surface of the hot-rolled product is usually brighter.


Henan HuaMei Aluminum Co.,Ltd is a aluminum manufacturer including aluminum sheet, aluminum coil, aluminum circle, aluminum checker plate, aluminum foil, color aluminum sheet/coil. More information pls contact us: [email protected]