Tool Steel
Advanced
Premium

Caldie

Heat Treatment Specifications

Austenitizing

Temperature1025°C(1877°F)
Soak Time30 minutes

Tempering

Temperature520°C(968°F)
Time120 minutes
Cycles3x

Quench Medium

air

Target Hardness

60 - 61 HRC

Performance Characteristics

Toughness7.5/10
Edge Retention5.5/10
Corrosion Resistance3.5/10
Ease of Sharpening5.5/10
Overall Score22/40

Interesting Facts

  • 1Uddeholm cold work tool steel
  • 2Part of Uddeholm premium knife steel lineup
  • 3Excellent wear resistance and toughness balance
  • 4Used where D2 isn't tough enough
  • 58% chromium - semi-stainless
  • 6ESR (Electroslag Remelted) for high purity

Famous Uses

Industrial cold work tooling
Specialty knives

Best For

Large heavy-duty knives
Choppers and camp knives
Durable work tools

Similar Steels

CPM 3V

PM steel, even tougher

A2

Cheaper, less toughness

Not Recommended For

  • Corrosive environments
  • Budget projects
  • Beginners

Expert Tips

  • 1Exceptional chipping resistance
  • 2Popular in European custom knife scene
  • 3Not stainless - requires maintenance
  • 4Best for large blades requiring toughness

Track Your Caldie Heat Treats

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

© 2026 BladesmithHub. All rights reserved.