Sichuan Liaofu Special Steel Company is one of the most experienced manufacturers and suppliers of 20cr2ni4a forged alloy steel round bar in China. With over 20 years' experience, our factory offer high quality products made in China with competitive price. Welcome to contact us for wholesale service.
The material 20Cr2Ni4A is a kind of structural alloy steel. 20 cr2ni4a is high quality alloy steel and it has high strength,toughness and hardenability.For 20Cr2Ni4A steel, there is no direct quenching after carburizing in order to reduce surface residual austenite. 20Ci2Ni4A's cutting and cold deformation plasticity is general and it has poor weldability.
20 Cr2Ni4A is widely used for large cross-section carburized parts, such as large gear, shaft, and conditioning components requiring high strength, and good toughness.
20Cr2Ni4A chemical composition %:
| Grade | Chemical composition %: | ||||||
| C | Si | Mn | P | S | Cr | Ni | |
| 20Cr2Ni4A | 0.17-0.23 | 0.17-0.37 | 0.30-0.60 | ≤0.03 | ≤0.03 | 1.25-1.65 | 3.25-3.65 |
20Cr2Ni4A mechanical properties:
| Grade | Mechanical properties: | |||||
| Tensile strengthσb (Mpa) | Yield strengthσ0.2 (Mpa) | Elongationσ5 (%) | reduction of area ψ (%) | Hardness | Notched bar impact strength αkv (J/cm2) | |
| min | min | min | min | max | min | |
| 20Cr2Ni4A | 1483 | 1292 | 13 | 57 | 434HB | 75 |
20Cr2Ni4A condition of delivery: heat treatment(Normalizing, Annealing, or high temperature tempering) or do not heat treatment state.
If you have need for 20Cr2Ni4A forged round bar, 20Cr2Ni4A forged square bar, 20Cr2Ni4A forged square bar, 20Cr2Ni4A forged shafts and 20Cr2Ni4A forged blocks. Please contact with us freely. Bebon will offer you more than your expect.
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