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DIN 1.2343 ESR

Alloyed, hot-work tool steel

DIN 1.2343 ESR is an alloyed tool steel for hot work, produced by ESR (Electro Slag Remelting) technology, which ensures high purity and better homogeneity of the material. Thanks to the chromium, molybdenum and vanadium content, it has very good toughness, heat resistance and is suitable for highly stressed molds and tools. The ESR variant offers higher reliability, finer structure and longer service life than the standard grade 1.2343.


Alternative designation : X38CrMoV5.1, ČSN 19552

Type : Alloyed, hot work tool steel (ESR)

Heat treatment:

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

  • Quenching: 1000–1020 °C (oil, pressurized gas or hot air)

  • Tempering: 2–3× at 550–650 °C (target hardness 46–52 HRC)

Blocks forged, roughened, annealed


310

410

510

610

810

1010








300

X

X

X

X










510



X

X

X

X


























Features:

  • High toughness and thermal shock resistance

  • Very good resistance to wear and cracking at high temperatures

  • Good dimensional stability during heat treatment

  • ESR design = higher homogeneity, purity and fine structure

  • Hardness after hardening approx. 46–52 HRC

Use:

  • Dies for die casting of aluminum, magnesium and zinc

  • Plastic injection molds (with higher durability requirements)

  • Hot forming tools (forging dies, mandrels, punches)

  • Highly stressed parts resistant to thermal loads

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