Crucible Industries / USA

CPM 3V

High Toughness Tool Steel (Non-Stainless)58–61 HRCCrucible Particle Metallurgy (CPM)

Composition

Core alloying elements define the baseline trade-off between wear resistance, corrosion behavior, and toughness.

Material Overview

CPM 3V is a high-performance powder metallurgy tool steel developed by Crucible Industries to maximize toughness while maintaining good wear resistance. Its CPM process ensures a fine and uniform carbide structure, significantly improving durability compared to conventional tool steels. While it is not stainless, it is widely respected for its ability to withstand extreme impact, bending, and abusive cutting tasks without chipping or breaking. It is often considered one of the best all-around survival knife steels when corrosion control is managed.

Performance Radar

Use four core metrics to understand the usable operating envelope of this steel at a glance.

Edge Retention

Toughness

Corrosion Resistance

Sharpenability

Edge Retention

8.0

Toughness

10.0

Corrosion Resistance

3.0

Sharpenability

7.0

Advantages

Extreme toughness (class-leading)
Very high impact resistance
Excellent resistance to chipping and breaking
Strong performance in hard-use environments
Fine CPM structure improves consistency

Disadvantages

Low corrosion resistance (non-stainless)
Requires maintenance to prevent rust
Edge retention lower than wear-focused steels
Not ideal for wet or saltwater environments

At A Glance

CPM 3V is a premium powder metallurgy tool steel known for extreme toughness and excellent impact resistance, making it one of the best steels for hard-use survival and outdoor knives.