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What is the application of 20# carbon steel?

What is the application of 20# carbon steel?

Posted:2020-04-30 11:30:08
20# steel is a high-quality low-carbon steel, cold-extruded, carburized and hardened steel.20# carbon steel has low strength, good toughness, plasticity and weldability. The tensile strength is 253-500MPa, and the elongation is ≥24%. 20 characteristics are basically similar to 15 steel, but the strength is slightly higher.
20# steel is suitable for the manufacture of less important small and medium-sized carburized carbonitrided parts such as hand brake shoes, lever shafts, gearbox speed forks, and driven passive gears in automobiles, tractors, and general machinery manufacturing. And the upper camshaft of the tractor, the suspension equalizer shaft, the inner and outer bushings of the equalizer; also used to manufacture various mechanical parts with low toughness and high toughness under hot rolling or normalizing; In the industry, such as forged or pressed tie rods, shackles, levers, sleeves, clamps, etc.
In the steam turbine and boiler manufacturing industry, 20# carbon steel is mostly used for pipes, flanges, headers and various fasteners working in non-corrosive media with a pressure ≤6N / square and a temperature ≤450 ℃; used to make crosses on railways and rolling stock Head, piston and other castings. Normalizing can promote the spheroidization of the steel, refine the large lump pro-eutectoid ferrite, and improve the cutting performance of the blank less than 160HBS.
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