O1 is an oil-hardened, high-carbon tool steel. It offers a good combination of hardness, edge retention, and very good sharpenability, but it requires protection against corrosion.
Three Key Characteristics of the Steel: Edge Retention, Corrosion Resistance, and Sharpenability
Edge Retention: Medium to High
★★★☆☆
The carbon content enables high hardness and a durable edge.
Corrosion Resistance: Low
★★☆☆☆
O1 is not a stainless steel and requires care in humid conditions.
Sharpenability: Very Good
★★★★★
The fine carbide structure allows for a very fine edge and easy resharpening.
Areas of Application
Traditional Knives: O1 is often used for handmade knives where good cutting properties and easy processing are important.
Outdoor: The combination of hardness and good sharpenability is suitable for classic outdoor knives, provided corrosion protection is observed.
Steel Composition
| Element | Content |
|---|---|
| Carbon (C) | approx. 0.90 % |
| Manganese (Mn) | approx. 1.20 % |
| Chromium (Cr) | approx. 0.50 % |
| Tungsten (W) | approx. 0.50 % |
Products with O1 Carbon Steel





