8620 ALLOY STEEL

  • [print version]

  • Description

    8620 steel is a low-alloy steel that contains  nickel, chromium, and molybdenum. It is  characterized by its medium strength, good  toughness, and wear resistance, making it  suitable for parts that require high surface  hardness while maintaining a tough core.  This steel undergoes heat treatment,  specifically carburizing, to enhance  its properties, and it is widely used in  applications such as gears, shafts, and other  components that benefit from its durability  and machinability.

  • Identification | Specifications

    UNS # G86200
    AISI # 6150

    ASTM A829

  • Properties

    Physical
    Specific Gravity - 7.45
    Density - 0.284 lb/in³

    Mechanical
    Hardness – Rockwell C – Max 40

  • Processes

    Standard
    Hot Rolled
    Flattened
    Cut Ends

  • Chemistry

    Carbon 0.18 – 0.23%

    Chromium 0.40 – 60%

    Manganese 0.70 – 0.90%

    Molybdenum 0.15% – 0.25%

    Nickel  0.40% – 70%

    Phosphorus 0.030% Max

    Silicon 0.15 – 0.35%

    Sulfur 0.040% Max