Characteristics and usage of sa573 grade 65 [450] high strength carbon steel

Seamless steel tubes for high-pressure boilers are mainly used in pipes, headers, economizers, superheaters and heat exchangers of high-pressure boilers. The working pressure of seamless steel tubes for high-pressure boilers is generally above 9.8 MPa and the working temperature is between 450℃ and 650℃. The main grades of seamless steel tubes for high pressure boilers are 15CrMoG, 12CR2MOG, 12Cr1MoV, sa573 grade 65 [450] high strength carbon steel, etc.. For the seamless steel tubes used for high pressure boilers, their service environment and related properties are also different for different grades.

The wear-resistant plate sa573 grade 65 [450] high strength carbon steel shows good wear resistance: the chemical composition of the alloy layer contains 4-5% carbon and 25-30% chromium. The volume fraction of Cr7C3 carbide in the metallographic structure is more than 50%, the macro hardness is HRC56-62, and the hardness of chromium carbide is HV1400-1800. Because of the vertical distribution of carbides in the wear direction, the wear resistance of the cast alloy with the same composition and sa573 grade 65 [450] high strength carbon steel hardness is more than twice as that of the cast alloy with the same composition and hardness. Compared with several typical materials, the wear resistance is as follows: (1) compared with low carbon steel; 20-25:1 (2) with as cast high chromium cast iron; 1.5-2.5:1.

TMCP process is an indispensable technology for our production of low alloy high strength wide and sa573 grade 65 [450] high strength carbon steel thick steel plates. TMCP process can produce steel with high strength and toughness without adding too many alloy elements and complex subsequent heat treatment. TMCP is a process that can save alloy sa573 grade 65 [450] high strength carbon steel and energy and is beneficial to environmental protection. A lot of our shipbuilding steel plates are produced by TMCP process.

It is a modern high-tech professional enterprise integrating scientific research, sa573 grade 65 [450] high strength carbon steel production and sales. The company is mainly engaged in the manufacture, installation and commissioning of boiler and pressure vessel, chemical, metallurgical, petroleum and other equipment, as well as sa573 grade 65 [450] high strength carbon steel process technology development, technology transfer and related technical consulting and technical services.

Both parties shall confirm the sa573 grade 65 [450] high strength carbon steel material object and the quality of the products, confirm the reasons for the defects and the quality of the products, and sign the quality inspection agreement. Major quality objections shall be reported to relevant leaders in a timely manner, and shall be discussed and solved with the sa573 grade 65 [450] high strength carbon steel steel plant.