What is the difference between 20G and 20# steel grade? The difference between 20G and 20# steel is very big. The chemical elements, mechanical properties, service environment and price of 20G and 20# steel are very different. normalized A131 grade E hull steel plate, 20G and 20# steel can not be compared. They are not of the same grade level, and can not be replaced by each other. 20# steel is high quality carbon structural steel, 20G steel is high pressure boiler steel. normalized A131 grade E hull steel plate, 20# steel does not bear pressure, while the use temperature of 20G steel is 450~480℃.
The company has sufficient inventory and complete varieties and specifications. In line with the sales principle of low price operation and quality first, let customers buy normalized A131 grade E hull steel plate at ease and use it comfortably! Integrity, professionalism and efficiency are our service tenets. We will wholeheartedly provide excellent normalized A131 grade E hull steel plate products and high-quality services for new and old customers. We also sincerely welcome new and old customers to call and write to discuss business and guide work!
Steel plate normalized A131 grade E hull steel plate cutting, according to different classification standards, there are different specific types. If it is divided by cutting temperature, it can be divided into cold cutting and hot cutting. One of the cold cutting, there are water jet cutting and abrasive cutting and so on, thermal cutting is flame cutting, plasma cutting and laser cutting. In addition, we also need to know that the high-grade thick normalized A131 grade E hull steel plate steel plate can be cut by flame, and its cutting is as simple as that of ordinary low-carbon and low-alloy steel, but we need to pay attention to it.
The sulfur element (S element) comes from the ore and fuel coke of steelmaking. It is a harmful element in normalized A131 grade E hull steel plate etc. steel. Sulfur exists in steel in the form of iron sulfide (FeS). FeS and Fe form a low melting point (985℃) compound. The hot working temperature of steel is generally above 1150 - 1200℃, so when the steel is hot working, the premature melting of FeS compound causes the workpiece to crack, which is called "hot brittleness". It reduces ductility and toughness of steel and causes cracks during forging and rolling. Sulfur is also detrimental to welding performance and reduces corrosion resistance.
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