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Alloy Steel 40Cr 7/8" Thread 60mm Fully Threaded Hex Bolt A449 Type 2

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    Alloy Steel 40Cr 7/8" Thread 60mm Fully Threaded Hex Bolt A449 Type 2

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    Brand Name : PM
    Model Number : M6-M36, 1/4"-1.1/2"
    Certification : ISO
    Price : USD 0.001-3 PER PCS
    Payment Terms : L/C, T/T
    Supply Ability : 1000 Tons per Month
    Delivery Time : 15-25DAYS PER CONTAINER
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    Alloy Steel 40Cr 7/8" Thread 60mm Fully Threaded Hex Bolt A449 Type 2

    A449 type 2 alloy steel 40Cr 7/8" thread 60mm length heavy hex bolt


    Heavy hex structural bolts fall under The American Society of Mechanical Engineers’ (ASME) standard category “Fasteners for Use in Structural Applications”. These bolts are for steel-to-steel structural joints in heavy construction applications.

    The ASME standard covers heavy hex structural bolt dimensional specifications designated by ASME B18.2.6. The chemical and mechanical specifications included in ASME B18.2.6 are governed by the American Society for Testing and Materials (ASTM) designated by ASTM F3125. In 2016, ASTM F3125 replaced ASTM A325 and ASTM A490 which are now grades under the new ASTM F3125 Standard. ASTM A325 and ASTM A490 are still widely used terms throughout the industry.


    SIZE: 1/4" - 1.1//2", M6 -M36. And 600mm Max length.

    STANDARD: ASME B18.2.6

    THREAD: ASME B1.1 , UNC, UNF, CLASS 2A

    FINISHED: Plain, Zinc Plated(Clear/Blue/Yellow/Black), Black oxide, Nickel, Dacromet, H.D.G.


    ASTM A449 Bolt Grades

    Bolt Grade

    Alloy

    Type 1

    Medium Carbon Alloy Steel

    Type 2

    Low Carbon Martensite or Medium Carbon Martensite Steel


    ASTM A449 Bolting Size Range

    Bolt Grade

    Inch

    Type 1

    1/4" to 3"

    Type 2

    1/4" to 1"


    ASTM A449 Chemical Composition

    Element

    Type 1

    Type 2

    Heat Analysis, %

    Product Analysis, %

    Heat Analysis, %

    Product Analysis, %

    Carbon

    0.28 - 0.55

    0.25 - 0.58

    0.15 - 0.38

    0.13 - 0.41

    Manganese, min

    0.6

    0.57

    0.6

    0.67

    Phosphorus, max

    0.04

    0.048

    0.04

    0.048

    Sulfur, max

    0.05

    0.058

    0.05

    0.058

    Boron, min

    --

    --

    0.0005

    0.0005


    ASTM A449 Mechanical Properties

    Nominal Diameter, inch

    Tensile Strength, ksi

    Yield Strength, min, ksi

    Elongation in 4D, min, %

    Reduction in Area, min, %

    1/4 to 1, incl.

    120

    92

    14

    35

    Over 1 to 1-1/2, incl.

    105

    81

    14

    35

    Over 1-1/2 to 3, incl.

    90

    58

    14

    35


    ASTM A449 Hardness Requirements

    Bolt Size, inch

    Hardness

    Brinell Hardness Number

    Rockwell C

    1/4 to 1, incl.

    255 to 321

    25 to 34

    Over 1 to 1-1/2, incl.

    223 to 285

    19 to 30

    Over 1-1/2" to 3, incl.

    183 to 235

    --


    ASTM A449 Recommended Nuts

    Bolt Grade

    Size, Finish

    Nut Grade

    Style

    Type 1 & Type 2

    1/4" to 1-1/2", plain

    ASTM A563 Grade B

    Hex

    Over 1-1/2" to 3", plain

    ASTM A563 Grade A

    Heavy Hex

    1/4" to 3", zinc coated

    ASTM A563 Grade DH

    Heavy Hex


    Quality Alloy Steel 40Cr 7/8" Thread 60mm Fully Threaded Hex Bolt A449 Type 2 for sale
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