Difference Of Billboard Metal Materials

1、 Iron sheet

Iron sheet (galvanized sheet) is a relatively cheap metal material. Because its surface is rough, it usually cooperates with the paint baking process to make it firm, beautiful and rust proof. Iron sheet baking paint can effectively isolate rainwater and delay rusting, but long-term hot and rainy weather will make the paint fall off, so it cannot maintain its due firmness and beauty. If you want to use it outdoors for a long time, it is recommended to use stainless steel.

2、 Stainless steel

Commonly used stainless steel is generally divided into 201 stainless steel and 304 stainless steel. 201 stainless steel is also called pseudo stainless steel, because although it has a fine and high-quality appearance of stainless steel, it is not really rust free. Its overall oxidation resistance is better than that of iron sheet, but it still has the problem of rust.

201 stainless steel is generally used as indoor stainless steel, because it rarely receives direct sunlight and rain wash, so there is no need to worry about rust. Although the unit price is much more expensive than the iron baking varnish, the grade is also much higher than the iron baking varnish. Therefore, 201 stainless steel is generally used for indoor high-end craft products.

304 stainless steel can be called real stainless steel. In addition to its fine and beautiful appearance, it also has excellent oxidation resistance. As a high-end stainless steel product, the unit price of 304 stainless steel is a little higher than that of 201 stainless steel, so it is more suitable for various harsh environments. 304 stainless steel is also positioned in outdoor stainless steel.