H13 1.2344 SKD61 Tool Steel Plate for Hot Work Die With Thickness 130-280mm
Die-casting mould for aluminum, extrusion mould, and thin-wall plastics mould.
1. Definition
1.2344/H13/SKD61 steel is a pressure resistant hot work die steel. The steel is remelted by electroslag, uniform in material, good in hardenability, excellent in machinability and polishing performance, high toughness and plasticity, good high and low temperature wear resistance, and high temperature fatigue and heat resistance.
2. Grades
| Chinese | American | German | Swedish | Japanese |
| GB | AISI | DIN | ASSAB | JIS |
| 4Cr5MoSiV1 | H13 | 1.2344 | 8407 | SKD61 |
3. Chemical Composition (%)
| C | Si | Mn | P | S | Cr | Mo | V |
| 0.35-0.40 | 1.00-1.20 | 0.40-0.60 | ≤0.015 | ≤0.003 | 4.80-5.20 | 1.20-1.40 | 0.80-1.0 |
4. Hardness
| Annealing hardness | Quenching hardness | Tempering hardness |
| ≤230HB | 51-55HRC | 46-50HRC |
5. Technical service
1) Die vacuum heat treatment and die surface treatment (N-O,C-N, carburize and nitridation surface treatment).
2) Black surface, annealing, hot rolled/forged, EAF/ESR, 2 or 4 sides cutting
6. Heat Treatment
| Heating temperature | Cooling way | Hardness (HRC) | Tempering temperature
/ºC | Tempering number | Hardness
(HRC) |
| First preheating | Second preheating | Last heating |
500-
600 | 820-
860 | 1010-
1040 | Oil cooling | 53-55 | 560-620 | 2 | 50-46 |
7. Available Size (mm)
| Shape | Thickness/
Diameter | Width | Length |
| Round Bar | 16-520 | / | 3000-6000 |
| Flat Bar | 16-260 | 205-610 | 3000-6000 |
| Forged | Round Bar | 150-450 | / | 2000-6000 |
| Block | 100-500 | 600-1000 | 2000-6000 |
8. Characteristics
1) Cold and hot fatigue resistance, strong ability to resist crack.
2) Electroslag remelting steel, high purity, good resistance to dissolve.
3) Organizational structure of uniform, better heat resistance with good toughness, high temperature resistance metal erosion.
4) Good resistance to high temperature tempering performance, hardness steady working under 600ºC, dimensional accuracy stability durability.
9. Applications
1) Cut alloy extruded and die casting moulds.
2) Casting moulds, extruded moulds, forging moulds.
3) Hot forging moulds, such as auto connecting rods, crank, stainless dinner knife.
4) Aluminum extruded moulds, such as aluminum window frame, computer radiater.
5) Lead,Zn and Al alloy die casting moulds, such as engine radiater, lights and other decorative products.
6) Full hardness (52-54HRC) plastic moulds with high polishing and long lifetime requirments, such as bakelite plastic mould.
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