Henan BEBON international co.,ltd
GB 20Mn2 steel
20Mn2 steel has medium strength. The coldstraining plasticity of 20Mn2 steel is high, low temperature property is good, weldability and machinability are passable. And compared with carbon steel with corresponding carbon content, the quench-hardening ability of 20Mn2 steel is higher. In oil the critical full hardening diameters are 4-15mm. But in heat treatment 20Mn2 steel has the tendency of overheating, decarburization sensitivity and temper brittleness. This kind of steel has an appropriate quench-hardening ability, after the suitable metal heat treatment, the microstructure of the body is the uniform sorbite ,bainite or superfine pearlite, thus it has the high tensile strength.
GB 20Mn2 steel’s application
20Mn2 steel is mainly used for making the carburized parts which don’t have high demand on surface and section size < 50 mm in diameter, such as carburized small gear, small axis, low requirements piston pins, cross pin head, diesel engine sleeve, valve plunger mandril, gearbox joystick, steel bushing, etc of automobiles, tractors and in machine tools production. In addition, in the hot rolling and normalizing state 20Mn2 steel can also be used for manufacturing rivet welding parts, screw and nut etc.
GB 20Mn2 steel’s equivalent material in different standard.
SMn420 (SMn21) / 1524 / 1024 / 1524-1024 / P355GH / 22Mn6 / 150M19 / 20Г2 / 20Mn2
GB 20Mn2 steel’s chemical composition
C / Si / Mn / Cr / Ni / Cu / P / S≤ / ≤ / ≤ / ≤
0.17～0.24 / 0.17～0.37 / 1.40～1.80 / 0.30 / 0.30 / 0.25 / 0.035
GB 20Mn2 steel’s mechanical property
Tensile Strength（σb/MPa） / Yield point（σs/MPa） / Elongation（δ5/%） / Reduction of Area（ψ/%） / Impact Absorbing Energy（Aku2/J） / Brinell Hardness（HBS100/3000）Annealing or High Tempering
≥785 / ≥590 / ≥10 / ≥40 / ≥47 / ≤187
Henan Bebon Internationl Co., Ltd is specialized in offering every kind of structural alloy steel plates.Bebon International is a professional 20Mn2 steel exporter in china. We can supply more than 1000 tons 20Mn2 steel every month. Besides that, Bebon Internationl has very good relationship with every big steel mill, so we could promise the delivery time and the competitive price compared with other companies.So, if you have any inquiry about 20Mn2 steel, if you are looking for a sincerely 20Mn2 steel supplier and want to get the 20Mn2 steel price, please do not hesitate to contact us.
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