BÖHLER K340

BÖHLER K340 ISODUR is a high-performance, remelted tool steel for people who want a hard-working knife with lasting sharpness, good toughness and practical sharpening. Its combination of high wear resistance and very good grindability makes it a rewarding choice for serious outdoor use.

WHAT THIS MEANS IN A KNIFE
A working knife should keep cutting without becoming a chore to maintain. K340 gives Kizlyar Supreme a strong foundation for exactly that balance: a durable edge, resistance to chipping and the ability to restore sharpness with good sharpening equipment. We match its heat treatment and geometry to the work each model is designed to do.

KIZLYAR SUPREME HEAT TREATMENT
Kizlyar Supreme K340 blades are commonly targeted around 62–63 HRC, depending on the model, blade thickness and production run. Our precise hardening and tempering develop the edge retention and strength that make this steel worth choosing.

EDGE PERFORMANCE
A keen, durable working edge makes K340 especially attractive in outdoor and field knives built for demanding cutting. Performance still depends on edge angle and blade geometry: even a tough tool steel should not be used for prying, twisting or striking hard mineral surfaces.

SHARPENING
Böhler rates K340's grindability highly for its class. In knife use, quality diamond, ceramic or modern water stones work well. Maintain the edge before it becomes completely blunt, use a stable angle and finish with light alternating strokes to reduce the burr.

CORROSION CARE
K340 contains 8.3% chromium but is not stainless. Wipe the blade clean and dry after use, especially after contact with moisture, salt, food acids or plant sap. Apply a thin protective oil before long storage and never leave a damp blade inside its sheath.

BEST SUITED TO
K340 is a strong choice for demanding fixed blades, hunting knives and outdoor tools where users want a blend of edge retention, toughness and field maintainability. If minimal corrosion care is your first priority, explore our stainless-steel options instead.

KEY ADVANTAGES
• High wear resistance
• Good toughness and resistance to edge chipping
• Good dimensional stability after heat treatment
• Very high grindability for its class
• Strong balance for hard-working fixed blades

CONSIDERATIONS
• Not stainless and requires corrosion care
• Choose the model and steel version for your intended work

Composition and baseline properties are based on Böhler's official K340 ISODUR technical information.