20Cr2Ni4 Mould steel Stocklist
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The 20Cr2Ni4 alloy steel has the properties of high strength, toughness and hardness.
20Cr2Ni4 Chemical composition
| C(％) | 0.17～0.23 | Si(％) | 0.17～0.37 | Mn(％) | 0.30～0.60 | Cr(％) | 1.25～1.65 |
| Ni(％) | 3.25～3.65 |
20Cr2Ni4 Mechanical Properties
The mechanical properties of 20Cr2Ni4 tool steels are outlined in the following table.
| Yield Rp0.2 (MPa) |
Tensile Rm (MPa) |
Impact KV/Ku (J) |
Elongation A (%) |
Reduction in cross-section on fracture Z (%) |
As-Heat-Treated Condition | Brinell hardness (HB) |
|---|---|---|---|---|---|---|
| 155 (≥) | 945 (≥) | 14 | 32 | 31 | Solution and Aging, Annealing, Ausaging, Q+T, etc | 423 |
20Cr2Ni4 TEST
In order to study the static mechanical properties and dynamic mechanical properties of 20Cr2Ni4 steel, the static compression experiment and the Hopkinson Pressure Bar test are conducted.
The stress-strain relationship within the scope of 25∼400°C is obtained by experiments, and softening effect of strain rate and strengthening effect of temperature is comprehensively analyzed. The paper has a more comprehensive understanding on mechanical response of 20Cr2Ni4 steel within the scope of 25∼400°C.
Based on the experiment data the parameters in Johnson-Cook constitutive equation of 20Cr2Ni4 have been gotten.
The research results of this paper lay a foundation for the further applications of 20Cr2Ni4 steel.
20Cr2Ni4 Application
It is used in large cross-section carburized parts, such as gears, shafts and components which are required high strength and good toughness.
