ASME sa573 gr.65 high strength structural steel sheet for sale

How to choose the material and specification of sa573 gr.65 high strength structural steel, boiler tube? First, select the specification according to the actual use. Secondly, material: the suitable boiler tube material is different for different use scenarios. Thirdly, the wall thickness of the boiler tube should be strictly in accordance with the relevant standards. If the thickness is not up to standard, it is easy to cause accidents, so it must be strictly controlled. Finally, the boiler tube should be checked in time when receiving the goods, and the relevant instruments should be used to detect whether the steel quality has reached the standard, if not, it can be rejected.

The main function of boron in sa573 gr.65 high strength structural steel 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.

The secondary quenching and low temperature tempering of wear resistant composite plate are mainly used for high alloy steel workpieces without mechanical processing after carburizing. Carburizing, high-temperature tempering, one-time heating quenching, low-temperature tempering, quenching temperature 840-860℃, mainly used for Cr Ni alloy carburizing workpiece. The second quenching and low-temperature tempering of wear-resistant composite plate, sa573 gr.65 high strength structural steel mainly improves the microstructure of the infiltrated layer. When the requirements for core properties are not high, quenching can be performed between AC1 and AC3, and when the requirements for core properties are high, it should be quenched above AC3.

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