Maxamet is a Carpenter powder high-speed steel that runs harder than almost anything else in production knives.
Maxamet Steel at a Glance
| Type | Powder metallurgy (PM) steel |
|---|---|
| Made by | Carpenter Technology (USA) |
| Typical hardness | 67-70 HRC |
| Key elements | Carbon about 2.15%, chromium about 4.75%, vanadium about 6%, tungsten about 13%, cobalt about 10% |
| Edge retention | 10/10 (excellent) |
| Toughness | 2/10 (low) |
| Rust resistance | 2/10 (low) |
| Ease of sharpening | 1/10 (very hard) |
| Best for | Extreme edge retention |
Ratings are relative 1 to 10 scores for typical factory heat treatments. See how Maxamet ranks against 46 other steels in our Knife Steel Chart.
What Is Maxamet Steel?
Maxamet was designed for cutting tools. Lots of tungsten and cobalt let it reach very high hardness, which gives outstanding wear resistance.
Maxamet Steel Properties
- Edge retention: Excellent.
- Toughness: Low.
- Rust resistance: Low. Keep it dry and lightly oiled.
- Ease of sharpening: Very hard. Use diamond or CBN stones.
Maxamet vs Other Steels
Maxamet vs CPM S110V
Compared with Maxamet, CPM S110V resists rust better. Read our CPM S110V guide.
Maxamet vs HAP40
Compared with HAP40, Maxamet holds an edge longer. HAP40 is tougher, resists rust slightly better and is easier to sharpen. Read our HAP40 guide.
Maxamet vs Böhler K390
Compared with Böhler K390, Maxamet holds an edge slightly longer. Böhler K390 is tougher and is slightly easier to sharpen. Read our Böhler K390 guide.
Is Maxamet Steel Good for Knives?
Yes, if you want the longest-lasting edge and treat the knife gently. Use diamond stones and keep it dry.
Pros:
- Extreme edge retention
- Very high hardness
Cons:
- Brittle
- Rusts easily
- Very hard to sharpen
Knives That Use Maxamet Steel
Makers sometimes change blade steels between versions, so check the listing to confirm the steel before you buy.
Frequently Asked Questions
Is Maxamet steel stainless?
No. Maxamet is not stainless and will rust or patina if left wet. Keep it dry and lightly oiled.
How hard is Maxamet steel?
Knives in Maxamet are usually heat treated to around 67-70 HRC.
Is Maxamet easy to sharpen?
Very hard. Diamond or CBN stones work best.