Bohler M390 Microclean Powder Steel

Böhler M390 Microclean Powder Steel is a top steel used in the cutlery industry that has gained an excellent reputation for its outstanding properties. It is a powder metallurgy (PM) steel produced by Böhler-Uddeholm. This technology ensures a homogeneous microstructure and high purity of the material, which is key to achieving superior properties.

Key features:

1. Excellent blade retention:
• M390 has a high content of carbon and alloying elements, which ensures extreme wear resistance and long blade life. Knives made from this steel retain their sharpness even under heavy use.
2. Corrosion resistance:
• Thanks to its high chromium content (20%) and the "Microclean" process, M390 has excellent corrosion resistance, making it an ideal choice for use in wet or aggressive environments.
3. Hardness and toughness:
• The steel can be hardened to a hardness in the range of 60-62 HRC without losing toughness. This is important to prevent chipping or breaking when using the knife.
4. Ease of sharpening:
• Despite its hardness and durability, it is relatively easy to sharpen on special diamond or ceramic grinders.

Chemical composition:

• Carbon (C): 1.9% - for hardness and edge retention.
• Chromium (Cr): 20% - provides excellent corrosion resistance.
• Molybdenum (Mo): 1% - contributes to wear resistance.
• Vanadium (V): 4% - improves wear resistance and increases carbide strength.
• Tungsten (W): 0,6 % - for higher hardness.
• Cobalt (Co): 0,3 % - stabilises microstructure.

Uses:

Böhler M390 steel is widely used for the production of:

• Premium pocket knives: its blade retention and corrosion resistance make it ideal for EDC (Everyday Carry) knives.
• Corrosion resistance and toughness ensure that the knives can handle extreme conditions.
• Kitchen Knives: Hygienic properties and easy maintenance make them suitable for professional chefs.
• Industrial blades: Where durability and wear resistance are key.

Advantages and disadvantages:

Advantages:

• Exceptional blade retention.
• Superior blade sharpness and corrosion resistance.
• Hardness and toughness in balance.
• Homogeneous structure due to powder metallurgy process.

Disadvantages:

• Higher price compared to conventional stainless steels.
• Grinding can be more challenging without the use of high quality grinding wheels.

Conclusion:

Böhler M390 Microclean Powder Steel is one of the best steels available in the cutlery industry. It combines superior properties for edge retention, corrosion resistance and toughness. It is popular with professionals and demanding users looking for the best for their knives.