What materials are P11 and F11 made of?
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Recently I encountered a description of a hydrogenation equipment material such as "1.25% Cr/0.5% Mo stainless steel P11/F11". What kind of material is this?
P11 and F11 refer to the material grades of chromium-molybdenum alloy steel, also known as A335 P11/F11. It is a low-alloy steel that has been heat-treated at high temperatures and is mainly used to manufacture high-pressure hydrogenation reactors, oil pipelines, etc. 1.25%Cr/0.5%Mo stainless steel P11/F11 is its specific chemical composition, where 1.25%Cr means containing 1.25% chromium, and 0.5%Mo means containing 0.5% molybdenum. This kind of steel has good corrosion resistance and oxidation resistance, as well as high strength and good weldability, so it is widely used in chemical hydrogenation equipment. .
P11 generally refers to SA 335 P11, chromium-molybdenum steel seamless steel pipe. F11 generally refers to forged chromium-molybdenum steel components such as SA182F11. P11 and F11 are both .25%Cr/0.5%Mo chromium-molybdenum steel, not stainless steel. The chemical composition is the same, but the processing technology is different.
Is it true that P11 and F11 have the same chemical composition but different manufacturing processes?
I learned a lesson. Also, is it true that P11 and F11 have the same chemical composition but different manufacturing processes?
The chemical compositions of P11 and F11 are basically the same. They are both low-alloy steels containing high levels of chromium and molybdenum. However, their application fields and production processes are slightly different. Specifically, P11 is a steel used for pipes and heating equipment under high temperature and high pressure. It is also suitable for steam generators, shell boilers and other equipment. F11 is mainly used in the manufacturing of high-temperature and high-pressure vessels, reactors, and oil extraction and transportation pipelines. In addition, there are some differences in the production process between the two. F11 usually requires more stringent production standards and quality control to ensure it has higher strength and toughness. Therefore, in practical applications, appropriate materials need to be selected according to different needs and application scenarios. .
So, if you are manufacturing a hydrogenation reactor (tubular adiabatic fixed bed type, pressure 30~40MPa, temperature 150-200 degrees), which one is suitable? Is it F11?
May I ask where this table comes from? Can you give me a full version? Thank you