Steel Library/K390 Microclean
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K390 Microclean

Heat Treatment Specifications

Austenitizing

Temperature1100°C(2012°F)
Soak Time30 minutes

Tempering

Temperature540°C(1004°F)
Time60 minutes
Cycles3x

Quench Medium

air

Target Hardness

63 - 65 HRC

Performance Characteristics

Toughness6/10
Edge Retention9.5/10
Corrosion Resistance2.5/10
Ease of Sharpening3/10
Overall Score21/40

Interesting Facts

  • 1Bohler's statement: 'Our best tool steel for edge retention and toughness'
  • 2European equivalent to CPM 10V (about 1% less vanadium)
  • 39% vanadium for extreme wear resistance
  • 42% cobalt for high-temperature strength
  • 5Can reach 62-65 HRC
  • 6Rare balance: extreme hardness with decent toughness

Famous Uses

Spyderco Police 4 Lightweight
Spyderco Urban Sprint Run
Spyderco MT17 Mule Team

Similar Steels

Not Recommended For

  • Влажная среда (сильно ржавеет)
  • Полевая заточка
  • Начинающие пользователи

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