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High Alloy Tool Steel / Carpenter Technology

Rex 86/Z-Max

Toughness 3.5/10, Edge Retention 10/10, Corrosion Resistance 4/10. Target hardness range: 65-68 HRC.

Known aliases: Z-Max (CPM-Rex86).

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Technical Summary

  • CategoryHigh Alloy Tool Steel
  • ManufacturerCarpenter Technology
  • ProcessPM
  • HRC Range65-68

Ratings: Toughness 3.5, Edge 10, Corrosion 4

Source attribution: Knife Steel Nerds and SteelHardnessLab.

Chemical Composition

C2.0%
Cr4.0%
V5.0%
Mo5.0%
W10.0%
Co9.0%

SteelHardnessLab Testing Data

Testing recognition: u/679696 and u/Skylark427.

ManufacturerSamplesAvg HRC
Spyderco269.5