How to distinguish between weathering steel plate and ordinary steel plate？

With the development of the steel industry, the demand for steel in many construction industries has gradually changed from quality to quality. For some open-air buildings, if ordinary steel plates are used, they will be covered with rust in a few years, even Painting protection will also damage the surrounding environment and the steel itself. At this time, the development of weather-resistant steel plates has brought a good solution to these problems.

In order to save production costs, many businesses do not hesitate to use ordinary steel plates to paint and work rust to deceive consumers. Let ’s take a look at how to distinguish between weathering steel plates and ordinary steel plates.

1. Corrosion resistance: Weathering steel plate rusts under natural climate, it is a dense oxide layer formed on the surface of the steel, which prevents oxygen and water in the atmosphere from penetrating into the substrate and plays an oxidative role; after ordinary steel corrosion, not only There will be no protection of the oxide layer, but the corrosion will be more serious.

2. The rust will not fall off naturally: The rust of the weathering steel plate is a naturally formed rust, which is closely attached to the surface of the base layer and will not fall off even if it is touched by hand; while the weathering steel plate forged by ordinary steel, It is the same as the weather-resistant steel plate, but it can easily fall off when touched by hand, which can be easily distinguished with the naked eye.

3. The color of the rust is natural: the rust of the weathering steel plate shows different colors according to the degree and time of corrosion, and these colors are presented by the oxidation of iron ions in steel, so the rust will not cause damage to the surrounding ecology and environment; ordinary steel In order to have the same appearance as the weathering steel, it is brushed. Even if it shows the same color, the paint itself is a chemical synthetic agent, which has a pungent odor and has a certain impact on the surrounding ecology.