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DIN 1.2344

Alloy tool steel for mold making

DIN 1.2344 is a high-alloy tool steel for hot work with chromium, molybdenum and vanadium. It is also known as H13 and is one of the most widely used steels in this category due to its balance between toughness, thermal shock resistance and wear resistance. It is suitable for die casting, drop forging and mold making where long life and stability of properties are required.


Alternative designation : X40CrMoV5.1, ČSN 19554

Type : Alloy tool steel for mold making

Heat treatment:

  • Preheating : 600–850 °C (multi-stage)

  • Quenching : 1020–1040 °C (oil, pressurized gas or air)

  • Tempering : 2–3× at 540–650 °C (target hardness 46–54 HRC)

Blocks forged, roughened, annealed


410

510

610

810









410

X

X

X

X





































Features:

  • High toughness and strength at high temperatures

  • Very good resistance to thermal shock and cracking

  • Good resistance to wear and softening under higher loads

  • Dimensional stability during heat treatment

  • Hardness after hardening approx. 46–54 HRC

Use:

  • Dies for pressure casting (aluminum, magnesium, zinc)

  • Forging dies and hot forming tools

  • Extrusion mandrels and punches

  • Molds for plastics with higher thermal loads

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