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The difference between weathering steel plate and acid-resistant steel plate

The difference between weathering steel plate and acid-resistant steel plate

Acid-resistant steel: hot-rolled steel plates and steel pipes that are resistant to sulfuric acid dew point corrosion. The acid-resistant steel we often say is 09CrCuSb, also called ND steel plate. (ND steel) steel is the ideal steel for "sulfuric acid low temperature dew point corrosion resistance" at home and abroad. It is widely used in the manufacture of economizers, air preheaters, heat exchangers and evaporators that serve in high sulfur flue gas. It is used to resist dew point corrosion of sulfur-containing flue gas.

Its superior performance of sulfuric acid dew point corrosion resistance and very high cost performance make it a better material to replace stainless steel and surpass stainless steel (in terms of sulfuric acid dew point corrosion resistance). ND steel has great economic significance and conforms to the "green" concept of longevity, energy saving, environmental protection and the national development policy orientation.

Weathering steel: that is, atmospheric corrosion-resistant steel, also known as Corten steel. The representative materials are 09CuPCrNiA and CortenA. CortenB weathering steel is made of ordinary carbon steel with a small amount of corrosion-resistant elements such as copper and nickel, and has the strength and toughness of high-quality steel. , plastic extension, forming, welding and cutting, abrasion, high temperature, fatigue resistance and other characteristics.

At the same time, since the alloy composition of weathering steel is less than that of stainless steel, the cost is also lower. The "Twelfth Five-Year" development plan of the iron and steel industry shows that its demand is gradually increasing, and it was successfully applied to the Grand Duchy of Luxembourg at the 2010 Shanghai World Expo. Hall.

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