Annealing Alloy mould Steel Plate bar 1.2738 / P20+Ni 3Cr2NiMnMo Tool Steel
|3-4 5-19 20+|
|FOB Unit Price:||US $1,680 US $1,650 US $1,600|
|Purchase Qty. (Tons)||FOB Unit Price|
|Production Capacity:||1000 Mt/Per Month|
|Payment Terms:||L/C, T/T|
- Model NO.: 1.2738 / P20+Ni / 3Cr2NiMnMo
- Standard: ASTM, AISI, GB, JIS, DIN, BS
- Surface Treatment: Black, Grinded, Machined
- Application: Mold & Dies
- Stock: Stock
- Thickness: 5-800 mm
- Width: 100-2200 mm
- Grade: 1.2738/ P20+Ni/ 3cr2nimnmo
- Test: Ut 100% / SGS
- Payment: T/T L/C at Sight
- Transport Package: Export Standard Packing or Customers′demand
- Origin: China
- Type: Steel Plate
- Certification: ISO, RoHS
- Technique: Hot Rolled
- Special Use: Used
- Shape: Round Bar or Flat Steel
- Length: 100-5800 mm
- Composition: Ferrous Steel Scrap
- Heat Treatment: Annealed / Q+T
- Delivery Quantiity: Include MOQ
- Trademark: CF STEEL
- Specification: DIN AISI GB
- HS Code: 72254
AISI D3 cold work steel, also know as DIN 1.2080 (Werkstoff) and JIS SKD1, is a 12% chrome alloy steel. D3 cold work steel has very high wear resistance against abrasive and adhesive wear due to the high volume of hard carbides in the steel matrix, medium toughness, dimensionally stable, high compressive strength, not secondary hardenable. Type AISI D3 cold works tool steel is oil-quenched; though small sections can be gas quenched after austenitization using vacuum. As a result, tools made with type D3 cold work tool steel tend to be brittle during hardening. Type D2 tool steel is the most commonly used steel among the group D steels. The D3 cold work steels contain 1.5 to 2.35% of carbon and 12% of chromium.
D3 Tool Steel is a high-carbon, high-chromium, oil-hardening tool steel thatis characterized by a relatively high attainable hardness and numerous, large, chromium-rich alloy carbides in the microstructure. These carbides providegood resistance to wear from sliding contact with other metals and abrasivematerials.
AISI D3 alloy steel is heat treatable and will offer a hardness in the range 58-64 HRC. After heat treatment D3 tool steel is hard, durable and dense, and is immune from sinking in use. It offers a measure of corrosion resistance when polished. In general, the applications of AISI D3 tool steel resemble those of D2 tool steel but it should be remembered that alloy tool steel D3 has better wear resistance of the two steels and is preferred for such items as shear blades. Owing to its higher wear resistance, AISI / ASTM D3 cold work steel is slightly more difficult to grind than D2 steels.
a,uniform hardness qualitative of Material;
b,No quenching crack danger,Without heat treatment costs that can reduce the tool cost;
c,Excellent polishing performance;
d,Good machining performance;
Used for various large -sized mirror plastic mould,percision mould;
a,Leather grain, pear skin grain etching, imitation stone moulds;
b,Clear plastic container classes such as pencil case, commodity high gloss mould;
c,Such as refrigerator, air conditioner production to demand higher large mould;
AISI D3 Cold Work Steel has high strength, good hardenability and wear resistance. D3 is suitable for applications such as complex blanking and forming tools for long runs and for hard and abrasive materials.
Highly stressed cutting
Punching tools for thin sheets,
Shear blades for cutting
Drawing and deep drawing tools,
Stone processing tools,
Knives for paper and plastics,
Shear knives for thin sheets.
Highly wear-resistant plastic moulds.
4, Chemical composition(%)
5, Mechanical Properties
7, Packing:Export Standard Packing or As per request
8, Delivery Date
Abundant stock, 15-20 days.
Customized products, 30-50 days.
9, The process flow
1)Hot rolled or forged condition, Pre-harden &tempering , black surface
3) Hot rolled technology:EAF+LF+VD
Forged technology: EAF+LF+VD+ESR+Forging +Q T + Machined surface
10, About Us
Forging of D3 Cold Work Tool Steel
Pre-heat at 900-950°C then raise temperature to 1050-1100°C. Soak until uniformly heated. D3 tool steel is relatively hard at elevated temperature. Therefore, initial hammer blows must be light and the temperature must not be allowed to fall below 1020°C until the metal begins to flow. Final forging should not be done below 900°C.
Heat Treatment of D3 Cold Work Steel
D3 tool steel requires hardening and tempering to achieve maximum properties. For maximum accuracy, the parts of D3 tool steel should be stress relieved after roughing operations. Stress should be relieved at 648°C (1200°F) for one hour and cooled slowly.
Heat D3 tool steels uniformly to 850-870°C, soak thoroughly, then slow furnace cool at a rate of not more than 25°C per hour to 650°C. The parts may then be air cooled. This should result in a maximum hardness of brinell 248.
The D3 cold work steel should be cooled to room temperature and should be tempered immediately. The parts should be placed in the tempering furnace and increased slowly to the desired tempering temperature. Tempering for 1 hour per inch of thickness is required.
D3 tool steel is extremely sensitive to overheating during hardening - do not overheat.
Pre heat slowly to 800-850°C, the raise rapidly to 950-970°C and soak until completely equalised. Quench in oil.