The corrosion resistance of DC01 cold plates depends on chromium, but because chromium is one of the components of steel, the protection methods are different. When the amount of chromium added reaches 10.5%, the atmospheric corrosion resistance of the steel is remarkably increased, but when the chromium content is higher, although the corrosion resistance is still improved, it is not obvious. The reason is that when chromium is used to alloy steel, the type of surface oxide is changed to a surface oxide similar to that formed on pure chromium metal. This tightly adhering chromium-rich oxide protects the surface from further oxidation. This oxide layer is extremely thin, through which you can see the natural luster of the steel surface, giving the stainless steel a unique surface. Moreover, if the surface layer is damaged, the exposed surface of the DC01 cold plate will react with the atmosphere to repair itself, and the oxide "passivation film" is reformed to continue the protection. The use of stainless steel cold plate 304 stainless steel in a dry indoor environment is quite effective. However, in rural areas and cities to maintain their appearance outdoors, they need to be cleaned frequently. In heavily polluted industrial areas and coastal areas, the surface can be very dirty and even rusted. However, in order to obtain an aesthetic effect in an outdoor environment, nickel-containing stainless steel is required. Therefore, 304 stainless steel cold plates are widely used in curtain walls, side walls, roofs and other architectural applications. The difference between the stainless steel sheets and the rolling process is as follows: DC01 cold plate : the surface is rough, the dimensional fluctuation is large, the punching and bending performance is better, there is no internal stress, and the price is relatively cheaper. Cold-rolled sheet: It is re-rolled on the basis of hot-rolled sheet. Because the cold-rolled sheet has work hardening and internal stress, its strength and hardness are improved, but the tensile strength and impact properties are lowered. However, it is possible to improve its performance by process measures such as annealing. Rolling sheets that are cold rolled have high dimensional accuracy but are more expensive. Stainless steel plates are divided into austenitic, ferritic, martensitic, biphasic (ferritic-austenitic) stainless steel CRC and stainless steel hot rolled coil, widely used in chemical, food, pharmaceutical, paper, petroleum , atomic energy and other industries, as well as construction, kitchen utensils, tableware, vehicles, household appliances, various parts. On the basis of retaining the good decorative effect and durable characteristics of stainless steel materials, the stainless steel composite board overcomes the shortcomings of difficult processing and flatness of stainless steel metal plates, and has good sound insulation and heat insulation effects, which can be easily cut. Cutting, bending, cutting, folding, drilling and other processing. There are several other factors to consider when using stainless steel clad plates: corrosion resistance, strength, resistance and physical function of stainless steel, forming and forming functions, etc.