- Weather-resistant steel plate, that is, atmospheric corrosion-resistant steel, is a low-alloy steel series between ordinary steel and stainless steel. Weather-resistant steel plate is made of ordinary carbon steel with a small amount of copper, nickel and other corrosion-resistant elements added. The weather resistance is 2 times that of ordinary carbon steel. ~8 times, and the paintability is 1.5~10 times that of ordinary carbon steel.
- Weathering steel is different from ordinary steel. At the beginning, it will also rust on the surface like ordinary steel. Due to its higher degree of alloying, the process is even faster than with regular steel. However, because the internal crystal lattice of weathering steel is more complex, a dark black dense rust layer will grow under the loose rust on the surface. In this dense rust layer, nickel atoms replace the positions of some iron atoms, making the rust layer cation selective and resisting the penetration of corrosive anions.
- It is this dense layer of rust that prevents the weathering steel from continuing to corrode even though it is rusted on the surface. In fact, as long as you distinguish carefully, you can see that the surface of weathering steel is different from ordinary rust: the rust of weathering steel is uniform and dense, close to the surface of the steel and protecting the steel; while the rust is mottled, loose and porous. It will fall apart when touched.
- Weathering steel plates are mainly used for steel structures that are exposed to the atmosphere for a long time, such as railways, vehicles, bridges, towers, photovoltaics, and high-speed projects. It can also be used to manufacture structural parts such as containers, railway vehicles, oil derricks, harbor buildings, oil production platforms and containers for sulfur-containing corrosive media in chemical and petroleum equipment. In addition, due to its unique appearance, weathering steel plates are often used in public art, outdoor sculptures and building exterior wall decorations.
- Advantage
1. Green and environmentally friendly
There is no need for initial painting, which can reduce the use of fire-retardant coatings and fire-retardant coatings, thereby reducing pollution, shortening the construction period, reducing costs and reducing maintenance. It is an economical steel with “green environmental protection” and sustainable development;
2. High visual expression
Weathering steel plates will change over time, and their color brightness and saturation are higher than those of ordinary structural materials, so they are easier to stand out against the background of garden plants;
3. Strong body shaping ability
Weathering steel plates are relatively easy to shape into rich and varied shapes and can maintain excellent integrity;
4. Good spatial definition ability
Thin weather-resistant steel plates are used to clearly and accurately separate the space, making the site concise and bright.
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