D2 Tool Steel | 1.2379 | X153CrMo12 | Cr12MoV | SKD11

D2 tool steel Cold works China supplier and Factory for more than 17 years. We Provide the SAE / AISI / ASTM A681 cold work D2 tool steels alloy materials in dependable quality and for reasonable price for sale and supply. We concentrate on Tool Steel material. Deep know the chemical composition and properties of D2 tool steel. Contact us for any D2 tool steel materials inquiry and purchase demands.

SAE D2 tool steel is a high carbon (1.4-1.6% C), high chromium Cold tool steel (11-13% chrome), and with Very high wear resisting properties, heat treatment can be reached to 60-62 HRc. D2 steel have very wear resistant property but not as tough as lower alloy steel. Cold work D2 tool steel hardens in air with a low order of movement and offers a measure of corrosion resistance while polished. The high chromium percentage gives it nice corrosion-resisting properties in the hardened condition and low temperature. D2’s mechanical properties are very sensitive to heat treatment. D2 tool steel is provided in diameter round, flat bar, and square block, as well as ground flat stock, drill rod and worm screw.

  1. Supply Range of Cold work D2 Tool Steel

D2 Steel Round Bar: diameter 8 to 350mm

D2 Tool Steel Plate: thickness 2 to 300mm x width 200 to 800mm x Length 2000 to 4000 mm

D2 Steel Block(Slab): 200mm x 500-800mm

Surface treatment: Black, Coarse grinding, finish machining, Turned machined or according custom demand.

  1. Reference standard of D2 Tool Steel Specifications
Country America German Japan
Standard ASTM A681 DIN EN ISO 4957 JIS G4404
Grades D2 1.2379/X153CrMo12 SKD11
  1. SAE AISI D2 Steel Chemical Composition
ASTM A681 C Mn P S Si Cr V Mo
D2 1.4 1.6 0.1 0.6 0.03 0.03 0.1 0.6 11 13 0.5 1.1 0.7 1.2
JIS G4404 C Mn P S Si Cr V Mo
SKD11 1.4 1.6   0.6 0.03 0.03   0.4 11 13 0.2 0.5 0.8 1.2
DIN ISO 4957 C Mn P S Si Cr V Mo
1.2379/X153CrMo12 1.45 1.6 0.2 0.6 0.03 0.03 0.15 1.6 11 13 0.7 1 0.7 1
                               

 

  1. AISI Steel Grade D2 Tool Steel MechanicalProperties
Mechanical Properties Metric Imperial
Hardness, Knop 769 769
Hardness, Rockwell C 62 62
Hardness, Vickers 748 748
Izod impact unnotched 77.0 J 56.8 ft-lb
Poisson’s ratio 0.27-0.30 0.27-0.30
Elastic modulus 190-210 GPa 27557-30457 ksi

Thermal Properties of D2 steel

Properties Conditions
T (°C)
Thermal expansion 10.4 x 10-6／°C 20~100
     
  1. AISI D2 Steel Forged – Grade ASTM A681

For forging the AISI D2 tool steel should be heat to 700°C (1292°F) slowly and uniformly. Then heating to 900-1040°C (1652-1904°F) rapidly and Soak thoroughly. After finished forging, slowly cool down in furnace.
as necessary, stopping work when the temperature drops below 1700°F(926°C). The delivery state of AISI D2 steel should be annealed after forging always.

  1. Heat Treatment for AISI D2 Tool Steel

AISI D2 steel alloy should be pre-heated very slowly to 815℃ (1500°F) and then temperature can be increased to 1010°C (1850°F). then keep at 1010°C (1850°F) for 20 to 45 minutes and air cool quenched.

  • Annealing of ASTM D2

Annealing for D2 tool steel material, that should be heat to 871°C to 898°C (1600 to 1650°F), then by slowly cooling at 4.4°C (40°F) per hour or less in heat treatment furnace. Suitable precautions should be taken to prevent excessive carburization or decarburization.

  • Stress Relieving SAE D2 Steel Material

When need to relieve the strains of machine, slowly heating D2 steel grade to 566°C to 676°C (1050°-1250°F), soak equalize, and then cool in room (Air Strain Relieving).

  • Hardening AISI D2 Tool Steel

Slowly pre-heat to 732°C to 787°C (1350°F-1450°F) and keep on the temperature until grade steel D2 material is heated thoroughly. Then heat to 983°C to 1010°C (1800°-1850°F). Hold the D2 tool steel block at the hardening temperature until completely and uniformly heated.

  • Quenching of D2

ASTM D2 is an air Quenching steel. for avoid scaling and prevent decarburization of the workpiece surface, the vacuum furnaces or controlled atmosphere is recommended strongly. for avoid scaling and prevent decarburization of the workpiece surface, the vacuum furnaces or controlled atmosphere is recommended strongly. If the furnaces are not available, packing harden, salt baths or packing the workpiece to stainless steel foil will provide some degree of surface protection in the hardening process. The Work-Parts should be cool to 65°C or room temperature, and then temper immediately.

Tempering of AISI D2 Steel

The tempering temperature of material D2 steel varies according to the required hardness. D2 steel can exercise 204 degrees C Rockwell C a hardness of 61 and 537 degrees C (1000 degrees F) Rockwell C hardness 54.

  1. Application of D2 Tool Steels Grade Material

AISI D2 is used to cold work tools applications, it have well wear resistance, normal applications such as Blanking die and rolling die.

D2-Tool steels Typical applications as below:

unching die, molding die, stamping die, blades, heading tools, long punch, forming roller, grinding roll, master the tools, ball, punch, perplexing extrusion die, drawing die, compound die, thread rolling die, Shear Blades, Burnishing Tools, Knurls, and other wear parts.

D2 tool steel, we usually have a large amount of stock, please contact us at any time. Send us an inquiry form. The quotation is usually given within 24 hours.