M390 Steel: The Premium Super Steel for Knife Blades

What Is M390 Steel?

M390 is a premium powdered metallurgy stainless steel developed by Bohler-Uddeholm. Known for its exceptional combination of edge retention, corrosion resistance, and hardness, M390 has become one of the most sought-after blade steels in the knife industry. Its fine carbide structure — rich in chromium, vanadium, and molybdenum — allows it to achieve an outstanding balance of wear resistance and toughness.

M390 steel — the premium powdered metallurgy super steel.

M390 steel is produced using the powder metallurgy (PM) process, which creates a uniform carbide distribution throughout the steel matrix. This manufacturing method gives M390 its characteristic fine grain structure and superior performance characteristics compared to conventional ingot-cast steels.

Composition and Properties

M390 vs Other Premium Steels

M390 consistently ranks among the top steels for edge retention in standardized cutting tests, making it a favorite for EDC knives that demand long-lasting sharpness. For a deeper technical dive into knife steel metallurgy, Knife Steel Nerds offers extensive analysis on M390 and other blade materials.

Why Choose M390 for EDC Knives

• Exceptional Edge Retention: M390 blades hold a working edge significantly longer than conventional steels, reducing the frequency of sharpening.
• Superior Corrosion Resistance: With 20% chromium content, M390 is highly stain-resistant, ideal for humid environments or everyday carry.
• High Hardness: Typically heat-treated to 60–62 HRC, M390 offers excellent wear resistance without becoming brittle.
• Fine Polish: The fine carbide structure allows M390 to take a highly polished, mirror-like finish.

Sharpening M390 Steel

Due to its high vanadium carbide content, M390 is more abrasion-resistant than standard blade steels, which means it requires diamond abrasives for efficient sharpening. Standard aluminum oxide stones may struggle to cut the steel effectively. While the initial sharpening can be time-consuming, the reward is a blade that maintains its edge through extended use between sharpenings. For guidance on advanced sharpening techniques, Science of Sharp provides authoritative resources.

M390 in Artisan Cutlery Knives

Artisan Cutlery offers several models featuring premium M390 blades, paired with titanium, carbon fiber, and other high-end handle materials. These knives represent the pinnacle of the brand's commitment to quality. Browse the M390 steel knife collection at Artisan Cutlery to see the full range of models featuring this exceptional blade steel.