The chemical and mechanical properties of p235gh steel sheet used

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P265GH grade to EN10028-2 is a non-alloy quality steel with high temperature performance. The number: 1.0425. It has good plasticity, toughness, cold bending performance and welding performance. P265GH is an executive standard of the European standard boiler vessel plate is EN10028, European pressure vessel steel plate standard 265GH, and the corresponding domestic brand is 25MnG. 25MnG is a seamless steel pipe for GB 5310-2008 high pressure boiler.

TMCP process is an important means to improve the comprehensive properties of steel. It can be used to produce ship plate, vessel plate, boiler plate, bridge steel, etc. Compared with the normalized steel of the same strength grade, TMCP can reduce the alloy content of the P235GH steel sheet used steel, reduce the carbon equivalent and improve the welding performance. TMCP is more and more widely used in various types of steel rolling industry.

Hydrogen (H) is the most harmful element in general steel such as p235gh steel sheet used. Hydrogen dissolved in steel will cause hydrogen embrittlement, white spots and other defects. Hydrogen, like oxygen and nitrogen, has very little solubility in solid steel. It dissolves into liquid steel at high temperature, and accumulates in the structure without time to escape when cooling, forming high-pressure micro pores, which greatly reduce the plasticity, toughness and fatigue strength of steel, and even cause cracks and brittle fracture in severe cases. "Hydrogen embrittlement" mainly occurs in martensitic steel, but not very prominent in ferrite steel, and generally increases with hardness and carbon content.

p235gh steel sheet used Tianjin inventory: 7*2920*8200, 15*2992*10185, 40*3050*5800, 14*1950*10700, 50*2500*12000, 20.9*2851*7000, 16*2120*6080, 20*1950*9350, 26*2200*12000, 20*2933*7300, 12.5*2900*11000, 40*3050*4200, 20*1950*9750, 15*2992*10185, 16*2230*7650, 14*2150*8500, 50*2200*12000, 16*2120*6080, 70*2500*12000.