420J2 Knife Steel

420J2 is a low-carbon, rust-resistant stainless steel. It is primarily used when corrosion resistance and ease of processing are more important than maximum edge retention.

Three key characteristics of the steel: edge retention, rust resistance, and sharpenability

Edge retention: low
★★☆☆☆
The low carbon content limits hardness and wear resistance.

Rust resistance: high
★★★★☆
The high chromium content ensures good corrosion resistance.

Sharpenability: very good
★★★★★
The low wear resistance allows for easy resharpening.

Areas of application

Inexpensive knives: The good corrosion resistance and easy processing make this steel suitable for low-cost applications.

Knives with high moisture exposure: Rust resistance is the central property of this steel.

Steel composition