4340 (AMS 6414 / AMS 6415 / AMS 6417 / AMS 6419)

4340 Alloy Steel When high strength, toughness, and fatigue resistance are required together in critical projects, the nickel-chromium-molybdenum 4340 alloy is one of the first steels that comes to mind. Offered with the assurance of Varzene Metalurji, we produce this material at maximum purity by putting it through vacuum induction melting (VIM) and vacuum arc remelting (VAR) processes. Possessing deep hardenability, this grade shows superior performance in shafts, gears, and structural parts subjected to heavy loads in sectors with zero margin for error such as aerospace, defense, and automotive. Thanks to the strict inspections in our production line, we ensure that mechanical properties remain standard in every batch we deliver, creating a long-lasting foundation for your projects.

Applications:

• Critical structural components in aerospace
• Landing gears and power transmission components
• Heavy-duty parts requiring high performance in the defense industry
• Shafts, axles, and gears in the automotive and machinery sectors

4340 alloy steel is produced in accordance with the following aerospace standards:

• AMS 6414 – Applies to high-purity products that have undergone the Vacuum Arc Remelting (VAR) process.
• AMS 6415 – Covers standard aerospace quality forging and bar products.
• AMS 6417 & AMS 6419 – Defines high strength and special heat treatment requirements.

These standards define specific technical requirements for both the material's form and the production process. As Varzene Metalurji, we ensure full compliance with these specifications in all our production processes.