4140 ALLOY STEEL

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  • Description

    4140 steel is a low-alloy steel recognized for its high strength, toughness, and versatility, making it ideal for various industrial applications. 4140 steel is a highly versatile and durable alloy steel that is essential in many high-performance applications. Its unique combination of strength, toughness, and adaptability to heat treatment processes makes it a preferred choice in industries that demand reliable and robust materials. Whether for automotive, aerospace, or manufacturing, 4140 steel continues to be a cornerstone material in modern engineering.

  • Identification | Specifications

    UNS # G41400
    AISI #     4140

    ASTM A829

  • Properties

    Physical
    Specific Gravity - 7.85
    Density - 0.284 lb/in³

  • Processes

    Standard
    Hot Rolled
    Annealed
    Flattened
    Cut Ends

  • Chemistry

    Carbon 0.36 – 0.44%

    Chromium 0.80 –1.10%

    Manganese 0.75 – 1.00 %

    Molybdenum 0.15 – 0.25%

    Phosphorus 0.030% Max

    Silicon 0.15 – 0.35%

    Sulfur 0.040 % Max