What's the body of the valve F51 F11?
F11 is equivalent to the national standard of GB/T3077 15CrMo, its chemical content is as follows:C 0.12~0.18Mn 0.40~0.70Si 0.17~0.37Cr 0.80~1.10Mo 0.40~0.55Ni = 0.30P = 0.035S = 0.035
This kind of steel with austenite and ferrite stainless steel body, compared with ferrite, the plasticity and toughness are higher, no room temperature brittleness, intergranular corrosion resistance and welding performance was significantly improved, while also maintaining a ferritic stainless steel 475 DEG C brittleness and high thermal conductivity, superplasticity etc.. Compared with austenitic stainless steel, high strength and resistance to intergranular non-staple food and resistance to chloride stress corrosion has significantly improved. Duplex stainless steel has excellent corrosion resistance and is also a stainless steel. Mainly used in the production of sour oil and gas wells.
F51 is a twin stainless steel forgingsThe corresponding pipe and plate type S31803, S31803 SA312 and SA240 in the pipe plate in the standard hardness less than HB293 so-called duplex stainless steel is in its solution structure ferrite and austenite in each half, generally less content of dual phase steel also need to reach 30%. In the case of lower C content, the Cr content is 18%~28%, and the Ni content is 3%~10%. Some steels also contain Mo, Cu, Nb, Ti, N and other alloy elements.
