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Guangzhou Changfeng Steel Co., Ltd.

Round Bar, specialty steel, Steel Plate manufacturer / supplier in China, offering 1.2379 D2 SKD11 Cr12MOV cold work mould steel bar special steel round flat plate, P21/NAK80 Steel Plate for Plastic Mould Steel, SAE5140/1.7035/SCR440/40Cr Hot Rolled Alloy Steel Plate and so on.

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Supplier Homepage Product Cold Work Mould Steel 1.2379 D2 SKD11 Cr12MOV cold work mould steel bar special steel round flat plate

1.2379 D2 SKD11 Cr12MOV cold work mould steel bar special steel round flat plate

FOB Price: Get Latest Price
Min. Order: 1 Yard
Port: Shenzhen, China
Production Capacity: 1000t/Month
Payment Terms: L/C, T/T

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Basic Info
  • Model NO.: 1.2379 D2 SKD11 Cr12MoV
  • Standard: AISI, ASTM, GB, JIS, DIN, BS
  • Application: Die Steel Bar
  • Alloy: Alloy
  • Production Process: Ef/Eaf+Lf+Vd/ESR
  • Payment Term: 30% Deposit, Balance by L/C at Sight
  • Trademark: CF STEEL
  • Specification: diameter 12-300mm
  • HS Code: 7228300000
  • Type: Alloy Steel Bar
  • Technique: Hot Rolled
  • Surface Treatment: Optional
  • Special Use: Mold Steel
  • Hardness: Annealed Hbs248 Max
  • Certificate: ISO/Mill Certificate
  • Transport Package: Export Standard Packing or Customers′demand
  • Origin: China
Product Description
1.2379 D2 SKD11 Cr12MoV  cold work mould steel bar special steel round flat plate

We are professional cold works D2 tool steel supplier for more than two decades. We supply AISI / ASTM A681 cold works D2 tool steels alloy steel materials in reliable quality and for attractive price for sale. We have deep knowledge of D2 tool steel's chemical composition and properties. Contact us for any D2 tool steel materials demands.

Cold Works D2 tool steel is a high carbon, high chromium tool steel (12% chrome) with extremely high wear resisting properties, heat treatable to 60-62 Rc. D2 steel is very wear resistant but not as tough as lower alloyed steels. D2 tool steel hardens in air with a low order of movement and offers a measure of corrosion resistance when polished. The high percentage of chromium gives it mild corrosion-resisting properties in the hardened condition. The mechanical properties of D2 are very sensitive to heat treatment. D2 steel is available in de-carb free rounds, flats, and squares, as well as ground flat stock and drill rod.

1.2379 D2 SKD11 Cr12MOV cold work mould steel bar special steel round flat plate

1, Application

Used for making small impact, high quality wear cold-punching mould;
1)Used for high tolerance and long service life of all kinds of cold stamping die and cold shear blade, thread rolling plate, etc.;
2)Tabletting punches and sleeves for corrosive;
3)Suitable for complex deformation of mould;

2, Features:

1) High hardenability, high hardness, high wear resistance and good toughness, quenching deformation, etc;
2) High carbon high chromium tool steel;
3) Good machinablity and inoxidizability;
4) Immune from sinking in use, high resistance to heavy  pressure;

3, Steel Grade:1.2080/ D3/ SKD1/Cr12 Cold Work Mould Steel

4, Specification

Chemical Compositons

5, Delivery condition

Surface:Grinding surface, black surface, turned surface and milling surface according to customer's requirements.

6, Packing:Standard export packing or as per customers' request.

1.2379 D2 SKD11 Cr12MOV cold work mould steel bar special steel round flat plate

D2 Tool Steel Heat Treatment

Heat TreatmentASTM D2 steels alloy should be preheated very slowly to 815ºC (1500°F) and then temperature can be increased to 1010oC (1850°F). They are then held at 1010oC (1850°F) for 20 to 45 minutes and air cooled (air quenched).


Annealing of D2 tool steels material should be done at 871 to 898°C (1600 to 1650°F) followed by slow furnace cooling at 4.4°C (40°F) per hour or less.after which cooling rate may be increased. Suitable precautions must be taken to prevent excessive carburization or decarburization.

Stress Relieving

When desirable to relieve the strains of machining, heat D2 grade steel slowly to 1050°-1250°F, allow to equalize, and then cool in still air (Strain Relieving).

Preheat Prior To Hardening

Preheat slowly to 1350°-1450°F and hold at this temperature until grade steel D2 material is uniformly heated.


After thorough preheating, heat to 1800°-1850°F. Hold the work piece at the hardening temperature until it is completely and uniformly heated.


AISI D2 steel tool material is an air hardening steel and will develop hardness on cooling in still air. To avoid scaling and prevent decarburization of the work piece surface, controlled atmosphere or vacuum furnaces are recommended. If these furnaces are not available, pack hardening, salt baths or wrapping the piece in stainless steel foil will provide some degree of surface protection in the hardening process. Parts should be allowed to cool to 150F, or to where they can be held in the bare hand, and then temper immediately.


The tempering temperature on material D2 steel may be varied according to the desired hardness. D2 steels can be tempered at 204°C (400°F) for achieving Rockwell C hardness of 61 and at 537°C (1000°F) for a Rockwell C hardness of 54.

1.2379 D2 SKD11 Cr12MOV cold work mould steel bar special steel round flat plate
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