16 manganese steel = 16Mn steel is one of the seamless steel pipe material
16MN steel pipe performance 16Mn (Q345B) steel pipe is a low-alloy high-strength structural steel, carbon content of 0.1% -0.25%, adding the main alloying elements manganese, silicon, vanadium, niobium and titanium; its total alloy content <3% . It is divided into four levels of 300, 350, 400 and 450 MPa according to intensity. There are mainly Q295, Q345, Q390, Q420, Q460. "Q" is the Chinese Pinyin capitalized initial of the yielding "Qu", and the subsequent number is the value of the minimum yield point (σs) of this grade. The following symbol is according to the content of the impurity elements (sulphur and phosphorus) of the steel. It is divided into A, B, C, D, etc. with low carbon content and manganese content. Which A, B grade steel is usually called 16Mn.
Chemical composition of 16Mn steel pipe: 0.12~0.20; Mn: 1.20~1.60; Si: 0.20~0.55; Tensile strength: 470~660 N/mm2; Yield strength: 275~345 N/mm2; Elongation: twenty one%. The specific value should be based on the thickness or diameter of the steel. The above data corresponds to the thickness or diameter of the steel: 16~100mm
The purpose of the 16Mn steel pipe is to use "16Mnq" as the special steel grade for the bridge, "16MnL" as the special steel grade for the automobile girder, and "16MnR" as the special steel grade for the pressure vessel.
16Mn steel pipe standard GB/T8162-2008 (for structural use) GB/T8163-2008 (transport fluid use) GB6479-2008 (high pressure fertilizer equipment seamless steel pipe)
16Mn steel pipe weight calculation formula: [(outer diameter - wall thickness) * wall thickness] * 0.02466 = kg / meter (weight per meter)
This kind of steel is to improve the mechanical properties of steel by adjusting the amount of carbon (C). Therefore, according to the level of carbon content, such steels can be further divided into: Low-carbon steels - carbon content is generally less than 0.25%, such as 10, 20 steel, etc.; Medium carbon steel - carbon content is generally between 0.25 ~ 0.60%, such as 35,45 steel, etc.; high carbon steel - carbon content is generally greater than 0.60%. This type of steel is generally not used to make steel pipes.
The 16Mn steel pipe knowledge source.
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