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S290(Bohler-Uddeholm) - High alloy high speed tool steel. Thanks to high content of Cobalt and Tungsten can achieve very high working hardness. It is a high carbide volume steel, and primarily optimized for high wear resistance at high temperatures. Later isn't really important for the knives, but former combined with high hardness makes a good choice for high performance, light use cutter which can cut abrasive materials for a long time.
S290 on occasion gets listed as equivalent or a replacement of either S390 microclean or Vanadis 60. Actually, it is neither, and composition differs very considerably, but as a substitute sure, it could work.
Manufacturing Technology - PM
Country - Sweden(SE)
Known Aliases:
Bohler-Uddeholm - S290 MICROCLEAN
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