Steel Glossary
1.2436 D 6
AISI D6
C | Si | Mn | Cr | W | |
---|---|---|---|---|---|
max. | 2.3 | 0.4 | 0.6 | 13.0 | 0.8 |
min. | 2.0 | 0.1 | 0.3 | 11.0 | 0.6 |
Cold work tool steel used for manufacturing cutting, bending, pressing, and embossing tools, as well as stamps, bending rails, and knives.
Due to its high carbon content, 1.2436 is particularly suitable for wear-resistant applications.
1.2436 is a ledeburitic 12% chromium steel that can be hardened with relatively simple methods.
It generally offers good machinability, but for improved machinability in the hardened state, consider using 1.2379, TENASTEEL, or Daido DCMX.
You can obtain this material from us as precision flat steel (standard and custom dimensions) and as raw material cut-to-size.
We also offer 1.2436 customized according to your specifications as a finished machined drawing part.
Tempering Diagramm
Hardening Temperature: 950°C, Cross-Sectional Sample: Square 20 mm
Heat Treatment Schedule

Continuous Cooling Transformation Diagram
Austenitization Temperature: 980°C, Holding Time: 30 Minutes
- ○ Hardness in HV
- 3 . . . 100 Volume Fraction in %
- 0.9 . . . 20.0 Cooling Parameter,
i.e., Cooling Time from 800°C to 500°C in s x 10-2 - 2K/mins ......Cooling Rate
in K/min in the Range of 800–500°C - Mk .....Grain Boundary Martensite
- B........Bainite
Microstructure Phase Diagram
Cooling Parameter λ

- Lk .... Ledeburite Carbide
- B ...... Bainite
- - Water Cooling
- - - - Oil Quenching
- - • - Air Cooling
- 1 ...... Workpiece Edge
- 2 ...... Workpiece Center
- 3 ...... Jominy Probe: Distance from the End Face
Isothermal Time Temperature Transformation Diagram
Austenitization Temperature: 980°C, Holding Time: 30 Minutes
Dependency of Core Hardness and Effective Hardening Depth on Workpiece Diameter.

- Quenching Medium:
- Oil
- - - Air
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