Stainless Steel
Intermediate
Mid-range

ATS-34

Heat Treatment Specifications

Austenitizing

Temperature1065°C(1949°F)
Soak Time30 minutes

Tempering

Temperature150°C(302°F)
Time120 minutes
Cycles2x

Quench Medium

air

Target Hardness

60 - 61 HRC

Performance Characteristics

Toughness6.5/10
Edge Retention7/10
Corrosion Resistance7/10
Ease of Sharpening6.5/10
Overall Score27/40

Interesting Facts

  • 1Made famous by Bob Loveless who introduced it to knife industry
  • 2Japanese Kobe Steel production
  • 3RWL34 is named in tribute to Robert W. Loveless (RWL)

Famous Uses

Chris Reeve Sebenza (original 1987-2002)
Many 1990s premium knives

Best For

General purpose cutting
Folding knives
Kitchen knives

Similar Steels

154CM

American original, identical

VG-10

Modern alternative

CPM S30V

Next generation

Not Recommended For

  • Modern premium (outdated)
  • Budget projects

Expert Tips

  • 1Japanese equivalent to 154CM
  • 2Molybdenum enhances machinability
  • 3Good balance of properties

Track Your ATS-34 Heat Treats

Start logging your heat treatment cycles with ATS-34. Track what works, compare results, and repeat your best blades.

© 2026 BladesmithHub. All rights reserved.