Henan BEBON international co.,ltd
20Cr4, ISO 683-11 20Cr4 steel, 20Cr4 steel plate, 20Cr4 structural alloy steel, 20Cr4 Alloy structural steel
ISO 683-11 20Cr4 steel’s main features
ISO 683-11 20Cr4 steel has high strength and hardenability, in water the critical full hardening diameters are 4-22mm , in oil the critical full hardening diameters are 11-40mm. But its toughness is poorer.This steel in carburization still has grain growth tendency. Quenching cooling directly has big influence to impact toughness. So after carburizing, 20Cr4 steel need 2 times quenching to improve heart toughness of parts, no temper brittleness. The coldstraining plasticity of 20Cr4 steel is high, can be done wiredrawing in cold state. The machinability in high temperature normalizing or quenching and tempering condition is good, but after annealing it will be poor. 20Cr4 steel is pearlite, the weldability is good, commonly no need to do heat treatment after welding. However, for the parts whose thickness is more than 15 mm, it should do the preheating to 100 ~ 150 ℃before welding, also after welding it is no need to do heat treatment.
ISO 683-11 20Cr4 steel’s application
20Cr4 steel is mainly used for making cam shaft,driven gears of small tractor. This kind of steel also is mostly used in the manufacturing of the high demand heart intensity, surface under wear, section under 30 mm or complex and not big load carburized parts (oil quenching), such as: machine tool transmission gear, gear shaft, worm and piston pins, claw clutch, etc.
ISO 683-11 20Cr4 steel’s equivalent material in different standard.
20CR / SCr420 / 5120 / G51200(UNS) / H51200(UNS) / 20Cr4 / 527A19, 527M20 / 18C3 / 20X
ISO 683-11 20Cr4 steel’s chemical composition
C / Si / Mn / Cr / Ni / Cu / P / S≤ / ≤
0.18～0.24 / 0.17～0.37 / 0.50～0.80 / 0.70～1.00 / 0.03 / 0.035
ISO 683-11 20Cr4 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
≥835 / ≥540 / ≥10 / ≥40 / ≥47 / ≤179
Henan Bebon Internationl Co., Ltd is specialized in offering every kind of structural alloy steel plates.Bebon International is a professional 20Cr4 steel exporter in china. We can supply more than 1000 tons 20Cr4 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 20Cr4 steel, if you are looking for a sincerely 20Cr4 steel supplier and want to get the 20Cr4 steel price, please do not hesitate to contact us.
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