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EN24 (AISI 4340) Alloy Steel

High tensile alloy steel capable of retaining good impact values at low temperatures.

EN24: High Performance Engineering Steel

EN24 (also known as 817M40) is a high tensile alloy steel known for its excellent wear resistance and high strength properties. It is suitable for components subjected to high stress and heavy loads.

Key Features & Properties

  • Composition: Nickel-Chromium-Molybdenum alloy.
  • Strength: Can be heat treated to high tensile strengths (up to 1550 N/mm²).
  • Toughness: Top-tier toughness and fatigue resistance.
  • Hardenability: Excellent hardenability for large sections.

Typical Applications

  • Heavy duty axles and shafts
  • Turbine shafts and rotors
  • High-load gear components
  • Aerospace components

Technical Specifications

EN24 is a popular grade for through-hardening. It offers a good combination of strength, ductility, and wear resistance. Equivalent to AISI 4340.

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