D2/1.2379/SKD11 Tool Steel Cold Work Tool Steel Forged and Rolled Plates

Model NO.
round bar
Composition
Ferrous Steel Scrap
Technique
Forged
Shape
Bar
Surface Treatment
Polished
Special Use
High-strength Steel Plate, Wear Resistant Steel, Free Cutting Steel, Mold Steel
Application
Die Steel Bar
Transport Package
Wooden or Bulk
Specification
6-400mm or (10-350)*(100-710)
Trademark
Smooth
Origin
China
HS Code
7214100000
Production Capacity
5000
Reference Price
$ 1,800.00 - 2,700.00
Contact Us

Product Description

1.2379/D2/SKD11

Brief Description
D2 Tool Steel is a versatile high-carbon, high-chromium, air-hardening tool steel that is characterized by a relatively high attainable hardness and numerous, large, chromium-rich alloy carbides in the microstructure. These carbides provide good resistance to wear from sliding contact with other metals and abrasive materials. Although other steels with improved toughness or improved wear resistance are available, D2 provides an effective combination of wear resistance and toughness, tool performance, price, and a wide variety of product forms.. The remelting process provides improved chemical homogeneity, refinement of carbide size, and the associated improvements in mechanical and fatigue properties .

1.Size Range for D2 Tool Steel
D2 Steel Round Bar: diameter 80mm~330mm
D2 Steel Plate: thickness 25mm~400mm x width 200mm~800mm
Delivery Condition:
Tured Round Bar,Milling Plate,Black,requiremts for customers.
Spheroidizing Annealing,ESR material.
2.D2 Tool Steel Equivalent Grades
Country USA German Japan China
Standard ASTM A681 W-nr. DIN JISG4404 GB/T1299-2000
Grades D2 1.2379 X155CrVMo121 SKD11 Cr12Mo1V1
3.D2 Tool Steel Chemical Composition
Grades C% Si% Mn% P% S% Cr% Mo% V%
D2 1.40~1.60 0.30~0.50 0.30~0.50 ≤0.03 ≤0.03 11.0~13. 0 0.70~1.20 0.80~1.10
1.2379/X155CrVMo121 1.50~1.60 0.10~0.40 0.15~0.45 ≤0.03 ≤0.03 11.0~12.0 0.60~0.80 0.90~1.10
SKD11 1.40~1.60 ≤0.40 ≤0.60 ≤0.030 ≤0.030 11.0~13. 0 0.80~1.20 0.20~0.50

4.D2 Tool Steel Physical Properties
  Physical properties of D2 Tool Steel are listed in the tables below.The elastic modulus is 207000MPa,and the specific heat at the constant pressure Cp is 461J/(kg·K).
Critical temperature of D2 Tool Steel
Critical point A c1 A cm A rcm A r1 M s
Temp.(approximation) 1490 °F
(810°C) 		1607 °F
(875°C) 		1382 °F
(750°C) 		1283 °F
(695°C) 		374 °F
(190°C)
Coefficient of linear thermal expansion
Temperature 68~212 °F
(20~100 °C) 		68~392 °F
(20~200 °C) 		68~572 °F
(20~300 °C) 		68~752 °F
(20~400 °C)
Coefficient 10.5 x10 -6 11.5 x10 -6 11.9 x10 -6 12.2 x10 -6
5.Forging of D2 Tool Steel
Items Heating temperature Starting forging temperature Final forging temperature Cooling
Ingot 2048~2120 °F
(1120~1160°C) 		1922~1994 °F
(1050~1090°C) 		≥1562 °F(850°C) Hot charging annealing
billet 2048~2084 °F
(1120~1140°C) 		1922~1958 °F
(1050~1070°C) 		≥1562 °F(850°C) Hot charging annealing,cooling in hole or dust
6.Heat treatment
  Soft Annealing
  Protect the steel and heat through to 1560°F (850°C). Then cool in the furnace at 20°F (10°C) per hour to 1200°F (650°C), then freely in air.
  Stress relieving
  After rough machining the tool should be heated through to 1200°F (650°C), holding time 2 hours. Cool slowly to 930°F (500°C), then freely in air.
 Hardenging
   Preheating temperature: 1110-1290°F (650-750°C). Austenitizing temperature: 1810-1920°F (990- 1050°C), but usually 1830-1905°F (1000-1040°C).
Temperature Soaking time
(min) 		Hardness before tempering
°F °C
1815 990 60 approx. 63 HRC
1850 1010 45 approx. 64 HRC
1885 1030 30 approx. 65 HRC
* Soaking time = time at hardening temperature after the tool is fully heated through.
Protect the part against decarburization and oxidation during hardening.
Quenching
  Air or pressurized gas to 150-125ºF (66-51ºC). Sizes up to 4 inches (101.6 mm) in thickness will through harden when air cooled from 1575ºF (857ºC). Sizes up to 6 inches (152.4 mm) in thickness will through harden when air cooled from 1625ºF (885ºC) .
Tempering
  Temper immediately after quenching. Hold at temperature for 1 hour per inch (25.4 mm) of thickness, 2 hours minimum, then air cool to ambient temperature. The typical tempering range is 350 to 400ºF (177 to 204ºC).
  For maximum wear resistance, temper between 300-350°F (149-177°C) for a hardness of 62-64 HRC. For the optimal balance between wear resistance and toughness, temper between 500-550°F (260-288°C). This will produce 58-60 HRC .
  For maximum toughness, double temper, 2 hours plus 2 hours, at temperatures above 950°F (510°C). This will produce hardness of less than 58 HRC .
7.D2 Tool Steel Applications
  Typical applications for D2 tool steel are blanking, forming, and trim dies, gages, slitting cutters, wear parts, lamination dies, thread rolling dies, drawing dies, rotary cutting dies, knurls, bending dies, gages, shear blades, burnishing tools, rolls, machine parts, master parts, injection screw and tip components, seaming rolls, extrusion dies, tire shredders, scrap choppers, etc.
D2/1.2379/SKD11 Tool Steel Cold Work Tool Steel Forged and Rolled Plates D2/1.2379/SKD11 Tool Steel Cold Work Tool Steel Forged and Rolled Plates D2/1.2379/SKD11 Tool Steel Cold Work Tool Steel Forged and Rolled Plates D2/1.2379/SKD11 Tool Steel Cold Work Tool Steel Forged and Rolled Plates D2/1.2379/SKD11 Tool Steel Cold Work Tool Steel Forged and Rolled Plates D2/1.2379/SKD11 Tool Steel Cold Work Tool Steel Forged and Rolled Plates D2/1.2379/SKD11 Tool Steel Cold Work Tool Steel Forged and Rolled Plates D2/1.2379/SKD11 Tool Steel Cold Work Tool Steel Forged and Rolled Plates
We have been specializing in producing D2 Tool Steel for over ten years,in order to pursue higher quality standards,our D2 Tool Steels are all ESR products.D2 Tool Steel is our best-selling product,if you have any questions please contact us and we will do our best to help !
 

Leave Your Message

 

Alloy Steel
✉ Contact Supplier