20Cr2Ni4
OTAI SPECIAL STEEL is 20Cr2Ni4 tool steel stockholders and suppliers from china, more 16 years experience in steel round bar, flat bar, and plate supply.
20Cr2Ni4 steel is a high-quality Cold work tool steel, It belongs to the high-quality high carbon alloy tool steel. Oil Quenched & Tempered Hardness is 423 HB.
Form of Supply
20Cr2Ni4 tool steel, we can supply the round bar, steel flat bar, plate, hexagonal steel bar, and steel square block. Round bar can be sawn to your required lengths as one-offs or multiple cut pieces. 20Cr2Ni4 Rectangular pieces can be sawn from flat bar or plate to your specific sizes. Ground tool steel bar can be supplied, providing a quality precision finished bar to tight tolerances.
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- Round
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- sheet
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- Square
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- Plate
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 |
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 |
Principal Design Features
One of the most widely used precipitation hardening grades in the business. While soft and ductile in the solution annealed condition, it is capable of high properties with a single precipitation or aging treatment. Characterized by good corrosion resistance, high harness, toughness, and strength.
Machinability
Long, gummy chips characterize this alloys machinability. It can be machined in the annealed condition, however, condition H1150M will yield the best results. Post machining solution treatment of parts will be required prior to final hardening if machining in this condition.
Heat Treatment
CONDITION A–Soak at 1900 F (1038 C) for 30 minutes and cool below 60 F (16 C) for complete martensite transformation. CONDITION H 950- Treat Condition A material at 900 F(482 C) for 1 hour, air cool… CONDITION H925, H1025, H1075, H1100, H1150- Soak solution treated material for 4 hours at the specified temperature, air cool, CONDITION H1150M- Soak solution treated material at 1400 F (760 C) for 2 hours, air cool, then re-heat to 1150 F (620 C) for 4 hours and air cool.
Welding
Successfully welded by common fusion and resistance methods, this alloy should not be joined by oxyacetylene welding. AWS E/ER630 filler metal is recommended if required.
Forging
Soak for 1 hour at 2150 F (1177 C) prior to forging. Do not work below 1850 F (1010 C). Post-work solution treatment is required prior to final hardening.
Processing
20Cr2Ni4 steel round bar and flat sections can be cut to your required sizes. 20Cr2Ni4 tool steel ground bar can also be supplied, providing a high-quality tool steel precision ground tool steel bar to your required tolerances. 20Cr2Ni4 steel is also available as Ground Flat Stock / Gauge Plate, in standard and nonstandard sizes.
Quality Assured Supply
20Cr2Ni4 is supplied in accordance with our ISO 9001 : 2008 registration.
Contact our experienced sales team to help you with your 20Cr2Ni4 tool steel questions and inquiry by Email or Telphone. The questions will be replied in 24 hours.
Email: jack@otaisteel.com
Tel: +86 769 2319 0193
Fax: +86 769 8870 5839