Carbon Steel
Intermediate
Mid-range

YCS3

Heat Treatment Specifications

Austenitizing

Temperature800°C(1472°F)
Soak Time15 minutes

Tempering

Temperature180°C(356°F)
Time120 minutes
Cycles1x

Quench Medium

oil

Target Hardness

60 - 62 HRC

Performance Characteristics

Toughness7/10
Edge Retention6.5/10
Corrosion Resistance1.5/10
Ease of Sharpening7.5/10
Overall Score22.5/40

Interesting Facts

  • 1Hitachi Yasugi Specialty Steel (trademark)
  • 2Equivalent to AISI-W5 and JIS-SKS93
  • 3Made exclusively at Proterial plant in Shimane Prefecture, Japan
  • 4Used by artisans in Sanjo city known for metalwork since 17th century
  • 5More carbon than SK steel, suitable for fine blades

Famous Uses

Japanese bonsai scissors
Ikebana tools
Sanjo artisan tools

Best For

Traditional tools
Japanese knives
Chisels

Similar Steels

SK5

More well-known alternative

Aogami #2

Premium version

Not Recommended For

  • Wet environments
  • Western markets
  • Beginners

Expert Tips

  • 1Simple carbon steel
  • 2Develops patina
  • 3Easy on whetstones
  • 4Classic Japanese tool steel

Track Your YCS3 Heat Treats

Start logging your heat treatment cycles with YCS3. Track what works, compare results, and repeat your best blades.

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