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    Multipurpose 4140 Alloy Steel Rod

    2-1/8" Diameter

    Image of Product. Front orientation. Multipurpose 4140 Alloy Steel Rod, 2-1/8" Diameter.
    Technical Drawing of Multipurpose 4140 Alloy Steel Rod, 2-1/8" Diameter.
    2-D PDF
    00000 per in.
    7478N31
    Choose a Length between 13" and 90" in 1/4" increments.
    Ships by next week
    7478N31
    00000 per in.
    Each
    Ships by next week
    Diameter

    2 1/8"

    Diameter Tolerance

    -0.004" to 0"

    Fabrication

    Cold Worked

    Heat Treatment

    Annealed

    Yield Strength

    60,000 psi

    Hardness

    Rockwell C19

    Hardness Rating

    Medium

    Maximum Hardness After Heat Treatment

    Rockwell C48

    Specifications Met

    ASTM A108

    Appearance

    Plain

    Application

    Multipurpose

    Certificate Form

    Digital

    Certificate Type

    Material Certificate with Traceable Lot Number

    Coefficient of Thermal Expansion

    6.8 × 10^-6

    Elongation

    15%

    Heat Treatable

    Yes

    Material

    4140 Alloy Steel

    Tolerance Rating

    Standard

    Length Tolerance

    0" to 1/8"

    Length Tolerance Type

    Plus

    Material Composition

    Carbon

    0.36% to 0.46%

    Chromium

    0.75% to 1.2%

    Iron

    Remainder

    Manganese

    0.65% to 1.1%

    Molybdenum

    0.10% to 0.25%

    Phosphorus

    0.035% Max.

    Silicon

    0.15% to 0.40%

    Sulfur

    0.04% Max.

    Vanadium

    0.05% to 0.15%

    Maximum Temperature

    1,500° F

    Minimum Temperature

    Not Rated

    Performance

    High Strength, Machinable, High Temperature, Weldable, Made-to-Order

    Shape

    Rod

    Straightness Tolerance

    1/8"/10 ft.

    Warning Message

    Physical and mechanical properties are not guaranteed. They are intended only as a basis for comparison and not for design purposes.

    Country of Origin

    United States

    DFARS Compliance

    Specialty Metals Compliant (252.225-7008), Specialty Metals Compliant (252.225-7009)

    Export Control Classification Number (ECCN)

    EAR99

    REACH Compliance

    REACH (EC 1907/2006) (06/27/2024, 241 SVHC) Compliant

    RoHS Compliance

    RoHS 3 (2015/863/EU) Compliant

    Schedule B Number

    722850.5000

    U.S.–Mexico–Canada Agreement (USMCA) Qualifying

    No

    Additional Specifications

    When an off-the-shelf size won't do, we'll get you the exact dimensions you need.

    Also known as chrome-moly steel, this versatile alloy steel is used for a wide range of parts, such as gears, axles, shafts, collets, and die holders. It resists fracturing from repeated stress. For added wear resistance, the surface can be hardened with heat treating.

    Note: Rods may be made from either 4140 or 4142 alloy steel. They are interchangeable in most applications.

    The information in this 3-D model is provided for reference only.