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EN19 (AISI 4140) Alloy Steel

High quality alloy steel with high tensile strength, good ductility, and shock resistance.

EN19: Versatile Engineering Steel

EN19 (also known as 709M40) is a high quality alloy steel, renowned for its good ductility and shock resistant properties combined with its resistance to wear. It is suitable for high tensile applications.

Key Features & Properties

  • Balanced Alloy: 1% Chromium - Molybdenum composition.
  • Strength: Very strong and impact-resistant.
  • Versatility: Can be heat treated to a wide range of tensile strengths.
  • Wear Resistance: Good resistance to wear and abrasion.

Typical Applications

  • Heavy shafts and axles
  • Gears and pinions
  • High tensile studs and bolts
  • Machine parts requiring high strength

Technical Specifications

EN19 is generally supplied in the quenched and tempered 'T' condition, with a tensile strength of 850-1000 N/mm². It is a direct equivalent to AISI 4140.

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