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TENA STEEL
Toolox 33
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1.1730
1.2311
1.2312
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1.2343 ESU
1.2363
1.2379
1.2436
1.2767
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1.3343
1.4112
1.7131
 
1.2379

Steel Glossary
1.2379 D 2/BD 2

Material info

AISI D2, BS BD2, AFNOR Z160CDV12

Chemical Composition %
C Si Mn P S Cr Mo V
max. 1.60 0.6 0.6 0.03 0.03 13.0 1.0 1.0
min. 1.45 0.1 0.2 11.0 0.7 0.7

Cold work tool steel used for manufacturing dimensionally stable high-performance cutting tools with good toughness and excellent wear resistance.

1.2379 is a ledeburitic 12% chromium steel that requires a high-quality heat treatment. The hardening temperature is above 1,000°C.

In its hardened state, this material is machinable with suitable tools due to its wear resistance.

You can obtain this material from us as precision flat steel (standard and custom dimensions), EcoPlan, annealed or hardened EroBlock, VarioPlan, VarioRond, and as raw material cut-to-size.

We also offer 1.2379 customized according to your specifications as a machine component or as pre-heat-treated guide bars and machine knives.

Tempering Diagramm
Tempering diagram for 1.2379-x153CrMoV12 at hardening temperature 1020°C
Heat Treatment Schedule

Austenitization Temperature: 1,020°C, Holding Time: 30 Minutes

Heat treatment schedule for 1.2379-x153CrMoV12 with temperature-time curves
Dependency of Core Hardness and Effective Hardening Depth on Workpiece Diameter.
Core hardness and hardening depth for 1.2379-x153CrMoV12 depending on workpiece diameter
  • Hardening Temperature: 1,030 °C
  • Quenching Medium:
    - Oil
    - - - Air
Isothermal Time Temperature Transformation Diagram
Isothermal TTT diagram for 1.2379-x153CrMoV12
Continuous Cooling Transformation Diagram

Austenitization Temperature: 1080°C, Holding Time: 30 Minutes

TTT diagram for continuous cooling of 1.2379-x153CrMoV12 at 1080°C
  • ○ Hardness in HV
  • 2 . . . 100 Volume Fraction in %
  • 0.40 . . . 59.8 Cooling Parameter, i.e., Cooling Time from 800–500°C in s x 10-2
  • 2 . . . 1K/min Cooling Rate in K/min in the Range of 800–500°C
  • Ms'-Ms ............. Range of Grain Boundary Martensite Formation
  • KgM .................. Grain Boundary Martensite
Microstructure Phase Diagram
Phase diagram of 1.2379-x153CrMoV12 at 1080°C
  • Lk ........... Ledeburite Carbide
  • RA ........... Retained Austenite
  • B ............. Bainite
  • P ............. Pearlite
  • K ............. Carbide
  • - - - Oil Quenching
  • - • - Air Cooling
  • 1 ............. Workpiece Edge
  • 2 ............. Workpiece Center
Continuous Cooling Transformation Diagram
Austenitization Temperature: 1020°C, Holding Time: 30 Minutes
TTT diagram for continuous cooling of 1.2379-x153CrMoV12 at 1020°C
  • ○ Hardness in HV
  • 1 . . . 100 Volume Fraction in %
  • 0.38 . . . 18 Cooling Parameter, i.e., Cooling Time from 800°C to 500°C in s x 10-2
  • 5 . . . 2K/min Cooling Rate in K/min in the Range of 800°C to °C
  • Ms'-Ms ............. Range of Grain Boundary Martensite Formation
  • KgM .................. Grain Boundary Martensite
Microstructure Phase Diagram
Phase diagram of 1.2379-x153CrMoV12 at 1020°C
  • Lk ........... Ledeburite Carbide
  • RA ........... Retained Austenite
  • B ............. Bainite
  • P ............. Pearlite
  • K ............. Carbide
  • - - - Oil Quenching
  • - • - Air Cooling
  • 1 ............. Workpiece Edge
  • 2 ............. Workpiece Center
Material info

Available products made of this grade:

Downloads

1.2379 D 2/BD 2

Cold work tool steel for the manufacture of punching dies, thread rolling dies as well as shear blades and hardened guide bars with large cross-sections

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