Heat Treatment Specifications
Austenitizing
Temperature1050°C(1922°F)
Soak Time15 minutes
Tempering
Temperature175°C(347°F)
Time120 minutes
Cycles2x
Quench Medium
air
Target Hardness
63 - 65 HRC
Performance Characteristics
Toughness7/10
Edge Retention8/10
Corrosion Resistance7/10
Ease of Sharpening6/10
Overall Score28/40
Interesting Facts
- 1Manufactured by Nachi-Fujikoshi, Japan
- 2Originally designed for precision tools like drill bits
- 3Exclusive steel - not everyone allowed to use it
- 4Spyderco wanted SRS-15 for sprint run circa 2020, was denied - used SRS-13 instead
- 5Takeshi Saji at Takefu uses SRS-15 and SRS-13
- 61.5% carbon vs 1.3% in SRS-13 - significant difference
- 7Users describe as 'crazy surgical' at 64 HRC
Famous Uses
Akifusa kitchen knives
Haruyuki knives
Takeshi Saji knives
Best For
Premium kitchen knives
High-performance cutlery
Similar Steels
Not Recommended For
- Budget projects
- Rough work
- Field use
Expert Tips
- 1Exclusive availability
- 263-64 HRC hardness
- 3Excellent corrosion resistance
- 4PM technology