Description of Q355GNH Corten Steel Plate
Q355GNH steel plate is a high-quality steel material in the engineering of large steel plate landscape. According to the current national standard "Carbon Structural Steel" GB 700, the grades of carbon structural steel are composed of four parts: the letter representing the yield point, the value of the yield point, the quality grade, and the symbol of the deoxidation method. The symbols are: Q—the first letter of the Chinese character pinyin of the yield point of the steel; A, B, C, D—the quality grade respectively; F—the boiling steel; b—the semi-killed steel; Z—the calm steel; TZ - refers to special killed steel, equivalent to bridge steel. In the representation of the composition of the grades, the "Z" and "TZ" symbols are omitted. For example: Q235-A2F represents Class A boiling steel with a yield point of 235 N/mm2; Q235-B represents Class B killed steel with a yield point of 235 N/mm2. There are many methods for classifying steels for steel classification of building steel structures.
Catefory of Q355GNH Corten Steel Plate
Q355GNH weathering steel plate can be classified according to chemical composition, or can be classified according to the purpose of steel. It can also be classified according to the content of harmful impurities (S, P) in the steel and the degree of deoxidation during smelting. In practical applications, it is generally classified by chemical composition. According to chemical composition and use, steel can be divided into: carbon structural steel, high-quality carbon structural steel, low-alloy high-strength structural steel, steel for building structure, alloy structural steel, weather-resistant structural steel, cast steel and so on. As the main material of building steel structure, steel has obvious comprehensive advantages compared with other building structural materials. For example, it is customary in the world to use the ratio of the density of the material itself to its yield point as an indicator of the light weight and high strength of a structure. This index of steel is very good, except for aluminum alloy.
Properties of Q355GNH Corten Steel Plate
Q355GNH corten steel plate and the elastic modulus of steel is three times that of aluminum alloy. Weather-resistant steel sheets show that steel has good stiffness as a structural material and is difficult to compare with other materials. The weathering board is fully utilized, and the designer's bold design is perfectly matched with the green garden, the building curtain wall and the concrete building, so that the red rust of the weathering steel and the sense of the age are exerted to * due to the strength of the steel plate. The toughness is very large, and the masonry material has as many thickness limits as the structure. Therefore, the space can be clearly and accurately separated by a very thin steel plate, making the site simple, bright and full of power. Corrosive, weather-resistant steel surface is a layer of rust red material, it is very rough to touch, the texture is very special, forming a natural.
Corrorion Resistance of Q355GNH Corten Steel Plate
Q355GNH weathering steel protective layer greatly prolongs the life and performance of weathering steel. Since the special dense weathering steel that can be formed on the surface of the weathering steel is not stainless steel, it will rust as in the case of ordinary carbon steel at the beginning, and the situation is different in the later stage. After the weathering steel is rusted for a period of time, due to the enrichment of trace elements such as Cu and P on the steel surface, a dense amorphous rust layer structure is formed, and the matrix is very firmly bonded. This layer of stabilized rust layer can resist the intrusion of moisture and harmful ions in the atmosphere to a certain extent, and prevent further corrosion of the base metal. Mainly hot dip coating or spraying zinc or aluminum, using the cathodic protection properties of the coated metal to extend the life of the steel structure. However, the application of metal coatings also has problems such as high cost, environmental pollution, difficulty in application of large components, and difficulty in soldering.
Q355GNH Weathering Steel Plate COR-TEN
Q355GNH weathering steel plate COR-TEN - a weathering and corrosion resistant steel. Weathering steel sheets Among all the metal materials, steel is familiar to us. Because steel materials have high tensile strength and are easy to bend, cut, drill and weld, they are widely used in various buildings and industrial facilities. However, one problem that steel materials plague people is "corrosion and rust". Therefore, how to prevent rust has become a major topic for experts to study. There are many ways to prevent rust. Generally speaking, it can be divided into three types. The method is to apply a layer of material on the surface of the steel to isolate the contact between the steel and the environment to prevent rust. The second type is potential anti-corrosion rust. The third type changes the material of the steel material to achieve corrosion resistance.
Q355GNH Steel Resistant to Atmospheric Corrosion
Q355GNH weathering steel plate COR TEN full name resistance to atmospheric corrosion hot rolling steel. Weathering steel is resistant to atmospheric corrosion This steel is an American standard. It is directly produced from blast furnace steel (normal purity) of ordinary steel by adding some weathering elements (usually CU, P). These weathering steels have a corrosion resistance of only 1.5-3 times that of ordinary steel, which is not durable and has a strong rust. The strength of the blast furnace is not only refined once, but the impurities are more difficult to achieve better quality. In addition to steel, there are welding materials and connecting fastener materials. Anti-corrosion, fireproof materials, etc.
