Steel Library/5160 Spring Steel
Carbon Steel
Beginner Friendly
Budget

5160 Spring Steel

Heat Treatment Specifications

Austenitizing

Temperature829°C(1524°F)
Soak Time15 minutes

Tempering

Temperature204°C(399°F)
Time60 minutes
Cycles2x

Quench Medium

oil

Target Hardness

58 - 60 HRC

Performance Characteristics

Toughness9/10
Edge Retention2/10
Corrosion Resistance1/10
Ease of Sharpening9/10
Overall Score21/40

Interesting Facts

  • 1Originally used in automotive leaf springs
  • 2Popular steel on 'Forged in Fire' TV show
  • 3Traditional Nepalese kukris often use 5160 or similar spring steels
  • 4Low alloy content makes it extremely forgiving for smiths
  • 5Chrome addition gives slightly better corrosion resistance than 1084

Famous Uses

Kukris
Large choppers
Forged in Fire knives
Automotive leaf springs

Best For

Larger blades requiring toughness
Swords
Kukri knives
Forged blades
Large fixed blades
Kukris
Heavy-use chopping tools

Similar Steels

80CrV2

Similar composition, but 80CrV2 is harder

1084

Simpler composition, but less tough

6150

More vanadium, finer grain

L6

Even tougher, ideal for swords

Not Recommended For

  • Thin kitchen knives (too tough)
  • Razor sharpness (doesn't hold thin edge)
  • Wet environments without maintenance

Expert Tips

  • 1Performs well over wide hardness ranges
  • 2Exceptional toughness when properly hardened
  • 3Versatile hardness range
  • 4Low 50s HRC for swords
  • 5Near 60 HRC for knives
  • 6Chromium improves hardenability

Track Your 5160 Spring Steel Heat Treats

Start logging your heat treatment cycles with 5160 Spring Steel. Track what works, compare results, and repeat your best blades.

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