UT Test Forged SKT4 Round Ring Hot Work Tool Steel
100% UT Test Forged Production SKT4 Tool Steel Round Ring For Hot Die
SKT4/ 1.2714 / 5CRNIMO steel has good toughness, strength and high wear resistance.Its mechanical properties are almost the same at room temperature and at 500 ~ 600℃.When heated to 500℃, the hardness of HB300 can still be maintained
Hardness
Annealing,241 ~ 197HB, indentation diameter 3.9 ~ 4.3mm
Heat treatment specification and metallographic structure:
Heat treatment specification: quenched, oil cooled at 830 ~ 860℃.
Delivery status: steel is delivered in annealed condition.
Application:
Suitable for manufacturing complex shapes, large impact load, low working temperature, side length & GT;400mm large and medium-sized hammer forging die and edge cutting die.For manufacturing simple shape general manufacturing process smelting use vacuum refining process to ensure the purity of steel;The e use of large-scale professional heat treatment to obtain the best pre-hardening effect of steel, hardness uniform distribution.
1.2714 steel Product Description
| din 1.2714 steel of good price 1.2714 | |||||||||||||||
| 1.Specifications of din 1.2714 steel of good price 1.2714 | |||||||||||||||
| Round bar | Diameter(mm) | Length (mm) | |||||||||||||
| 20~800 | 3000~5800 | ||||||||||||||
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Plate |
Thickness(mm) | Width (mm) | Length (mm) | ||||||||||||
| Max:800 | 205~810 | 2000~4000 | |||||||||||||
| The size can be customed | |||||||||||||||
| 2.Chemical composition(%) of din 1.2714 steel of good price 1.2714 | |||||||||||||||
| C | Si | Mn | Cr | Mo | V | Ni | P | S | |||||||
| 0.50- 0.60 | 0.10- 0.40 | 0.65- 0.95 | 1.00- 1.20 | 0.45-0.55 | 0.07-0.12 | 1.50-1.80 | 0.03max | 0.03max | |||||||
| Similar standards | |||||||||||||||
| AISI/SAE | DIN | W.Nr. | JIS | GB,YB | |||||||||||
| 6F2 | 56NiCrMoV7 |
1.2713 1.2714 |
SKT4 | 5CRNIMO | |||||||||||
| 3.Heat treatment of din 1.2714 steel of good price 1.2714 | |||||||||||||||
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Isothermal annealing: -Heat to 800°Cand hold at temperature for 1/2 h to 1 h; -Furnace cooling to 670°Cand hold at temperature for at least 10 hours; -Cool by 10°C/h to 630°C; -Cooling in air. Maximum hardness:≤240 HB |
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Stress relieving: To be carried out after maching before the final heat treatment. -Heat to 600-650°C, hold for 4-6 hours; -Cooling in furnace to 300-350°C; -Cooling in air |
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Hardening: -Initial preheating to 350-450°C; -Second preheating to 650-750°C; -Heat to hardening temperature 860-890°Cand hold at temperature; -Cooling in hot oil (40-60°C); Tempering hardness: 45~45HRC |
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Tempering: Tempering must be carried out within one hour from hardening(warm part) in the range 550-630°Cfor 4-6 hours according to hardness required, the dimensions of the parts and operating conditions. |
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