Carbon Steel
Intermediate
Budget

SKS93

Heat Treatment Specifications

Austenitizing

Temperature800°C(1472°F)
Soak Time20 minutes

Tempering

Temperature180°C(356°F)
Time120 minutes
Cycles1x

Quench Medium

oil

Target Hardness

58 - 61 HRC

Performance Characteristics

Toughness6.5/10
Edge Retention6.5/10
Corrosion Resistance1.5/10
Ease of Sharpening7.5/10
Overall Score22/40

Interesting Facts

  • 1Similar to AISI O2 tool steel but without vanadium
  • 2Deep hardening steel - easier heat treat than White #2
  • 3About 1% carbon like Shirogami #2 but different hardenability
  • 4Very easy to sharpen to extremely sharp edge

Famous Uses

Shear knives
Press dies
Japanese kitchen knives

Best For

Japanese kitchen knives
Shear knives
Industrial dies

Similar Steels

SK5

No alloying elements

Aogami #2

Premium version

Not Recommended For

  • Wet environments
  • Western markets

Expert Tips

  • 1Often cladded with stainless
  • 2Will develop patina
  • 3Easy to sharpen on whetstones
  • 4Good for wa-handle knives

Track Your SKS93 Heat Treats

Start logging your heat treatment cycles with SKS93. Track what works, compare results, and repeat your best blades.

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