52100 is a ball-bearing steel that custom makers love for hunting and kitchen knives.
52100 Steel at a Glance
| Type | Carbon steel |
|---|---|
| Made by | Many mills (AISI 52100 bearing steel) |
| Typical hardness | 60-63 HRC |
| Key elements | Carbon about 1.0%, chromium about 1.45% |
| Edge retention | 4/10 (modest) |
| Toughness | 7/10 (very good) |
| Rust resistance | 1/10 (low) |
| Ease of sharpening | 8/10 (easy) |
| Best for | Hunting and custom knives |
Ratings are relative 1 to 10 scores for typical factory heat treatments. See how 52100 ranks against 46 other steels in our Knife Steel Chart.
What Is 52100 Steel?
52100 was designed for ball bearings, so it is very clean and wear resistant. With the right heat treatment it combines good hardness and toughness.
52100 Steel Properties
- Edge retention: Modest.
- Toughness: Very good.
- Rust resistance: Low. Keep it dry and lightly oiled.
- Ease of sharpening: Easy.
52100 vs Other Steels
52100 vs 1095
Compared with 1095, 52100 holds an edge slightly longer and is slightly tougher. 1095 is slightly easier to sharpen. Read our 1095 guide.
52100 vs O1
Compared with O1, 52100 is slightly tougher. Read our O1 guide.
52100 vs W2
Compared with W2, 52100 is slightly tougher. Read our W2 guide.
Is 52100 Steel Good for Knives?
Yes, for hunting and kitchen knives where you will look after the blade.
Pros:
- Fine edge
- Good toughness
- Better edge retention than most carbon steels
Cons:
- Rusts easily
Knives That Use 52100 Steel
Makers sometimes change blade steels between versions, so check the listing to confirm the steel before you buy.
Frequently Asked Questions
Is 52100 steel stainless?
No. 52100 is not stainless and will rust or patina if left wet. Keep it dry and lightly oiled.
How hard is 52100 steel?
Knives in 52100 are usually heat treated to around 60-63 HRC.
Is 52100 easy to sharpen?
Easy. Most standard stones and pull-through sharpeners work.