Guangzhou Changfeng Steel Co., LTD
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Cold Work Mold Steel SKD11 D2 1.2379 Round Bar Steel For Punching Cutting AND Stamping Die
For various high precision, long-life cold work moulds, cutting tools and measuring tools.
1. Introduction
A. D2 steel is a high wear resistant micro deformation cold working die steel, belonging to air hardening tool steel. With high quality fraction of carbon and high chronic, the hardness can up to 60HRC after heat treatment, but malleability,toughness,rust resistance is not good and the surface of the steel is also difficult to be polished.
B. With the development of cold stamping products moving towards high accuracy,high efficiency,varieties, we require the mould steel should has good wear resistance and high toughness.
C. Compared with Cr12MoV steel, this D2 die steel adds Mo,V compositions,changed the steel cast structure, improved the morphology of ledeburite , toughness and wear resistance are better than Cr12MoV steel, improved the service life as well.Because of the yield point and plastic deformation resistance is higher than Cr12MoV steel, so that forging performance and hot molding properties are a little weak than Cr12MoV steel.
2. Equivalent grades
| GB | DIN | AISI | JIS |
| Cr12Mo1V1 | 1.2379 | D2 | SKD11 |
3. Chemical composition
| C | Si | Mn | S | P | Cr | Ni | Cu | V | Mo |
| 1.40-1.6 | 0.6 | 0.6 | 0.03 | 0.03 | 11.5-13 | 0.25 | 0.30 | 1.00 | 0.70 |
4. Recommend heat treatment
| quench | temper | ||||||
| Heating temperature/ºC | Cooling way | Hardness (HRC) | Tempering temperature /ºC | Tempering number | Hardness (HRC) | ||
| First preheating | Second preheating | Last heating | |||||
| 600-650 | 800-850 | 1020-1040 | Air Cooling | 61-63 | 500-560 | 2 | ≥58 |
5. Hardness
annealing ≤255HB, impression diameter≥3.8mm;
quenching ≥59HRC
D2 steel heat treatment regime
quenching , 820±15ºC, preheat , 1000±6ºC(salt bath) or 1010±6ºC heating, keep warm 10~20min, air cooling, 200±6ºC tempering.
6. Application:
1) used for freezer compressor rear cowl mould quenching hardening 56~58HRC.
2) because of V,Mo composition are higher than Cr12MoV steel, so that it has better combination property and will instead of Cr12MoVsteel gradually.
3) making cylindrical die roll,destage mixing pad cold punching mould and the service life is5-6 times longer than Cr12MoV steel.
7. Feature
1. High high wear resistant,
2. micro deformation
3. Long service life
4. Good toughness
5. high accuracy, high efficiency, varieties
8. Available size(mm):
| Flat Bar Size(mm) | Round bar Size(mm) | |||
| Thickness | Width | Length | Diameter | Length |
| 8-80 | 155-610 | 3000-6000 | 14-80 | 300-6000 |
9. Delivery days:
For abundant stock, 15-20 days.
For customized products, 30-50 days.
10. Package: We provide standard export packing or according to customers' request
11. Products show
12. Our Services
Pre-sale Service
1. Sample can be offered with sample charge and courier fee by buyer's side.
2. We have full stock with a variety materials, guarantee delivery is in short time.
3. Good Quality + Factory Price + Quick Response + Reliable Service, is what we are trying best to offer.
4. All of our products are produce by our professional workman and we have our high-work-effect foreign trade team, you can totally believe our service.
After you choose
1. We will arrange fastest shipment after production.
2. Check quality again, then send out to you at 1-2 working day after payment.
3. Email you shipment details, and help to chase the cargo until it arrive you.
After-sale service
1. We are very glad that customer give us some suggestion for price and products.
2. If any question, 24 hours response.