What are the common defects of a573-70 mechanical properties welding

With high-quality a573-70 mechanical properties steel and professional services, we have won international praise in infrastructure, shipbuilding, oil and other industries, and gradually grow into a bright star in the steel export industry, while winning unanimous praise from foreign customers. It has laid a foundation for the development of our a573-70 mechanical properties steel market and improved the control of steel plate production quality.

Galvanized sheet refers to the steel plate with a layer of zinc on its surface. Galvanizing is an economic and effective anticorrosion method of steel plate. Galvanized sheet can be divided into hot galvanized sheet and electro galvanized sheet according to production process. The zinc layer of hot-dip galvanized sheet is thick, which is used for a573-70 mechanical properties parts with strong corrosion resistance. The thickness of zinc layer of galvanized sheet is thin and even, which is mostly used for painting or indoor products.

What is the specific use of a573-70 mechanical properties, hot rolled plate in daily life? First of all, hot rolled plate is used in bridge, vehicle structure, frame and other fields to play a role of bearing pressure. Secondly, high pressure boiler vessels are also made of hot rolled plates, which can be heat-resistant and airtight, and can stably seal the hot gas in the container. Thirdly, stainless steel hot rolled plate can be used to process hardware products. It has excellent corrosion resistance, and is easy for processing.

The main function of boron in a573-70 mechanical properties and so on steel is to increase the hardenability of steel, so as to save other rare and precious metals, such as nickel, chromium and molybdenum. For this purpose, the boron content is generally regulated in the range of 0.001% - 0.005%. It can replace 1.6% nickel, 0.3% chromium or 0.2% molybdenum. It should be noted that molybdenum can prevent or reduce temper brittleness, while boron slightly promotes temper brittleness, so molybdenum can not be completely replaced by boron.

"SA572 Grade 55 [380] steel chemical composition(%)Carbon max.: 0.26Manganese max.: 1.35Phosphorus Max.: 0.030Sulfur Max.: 0.030Silicon max.: 0.40a573-70 mechanical properties, SA572 Grade 55 [380] steel mechanical propertiesTensile strength min. MPa: 380Yield strength min. MPa: 485Elongation % min. in 200mm : 17Elongation % min. in 50mm : 20"

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