Uddeholm Tyrax ESR


Uddeholm Tyrax ESR combines best in class toughness, corrosion and wear resistance. This grade was developed for molding of high performance plastics often filled with glass fiber reinforcements and additives like flame retardants. This matrix- based microstructure is designed to achieve a high-gloss surface by only a few polishing steps, dramatically reducing the tool lead time and enabling production of top quality plastic parts. Uddeholm Tyrax ESR can achieve a high hardness ( up to 58 HRC) and is a suitable upgrade from AISI 420 ESR, AISI S7 & AISI 440C.

  • Good corrosion resistance.
  • High hardness (Up to 60 HRC, recommended hardness: 55 – 58 HRC).
  • Good ductility and toughness.
  • Good wear resistance.
  • Excellent polishability.

Uddeholm Tyrax ESR

  • Corrosion resistance 80%
  • Wear resistance 80%
  • Polishability 95%
  • Toughness 60%
Chemical composition
Carbon 0.40 Silicon 0.20 Manganese 0.50
Chromium 12.00 Molybdenum 2.30 Vanadium 0.50
Polishing of Uddeholm Tyrax ESR

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Ever wondered how to get a mirror surface on your steel? Our polishing expert shows you his best tips on how to polish our tool steel Uddeholm Tyrax ESR.

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