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ASTM A449 Structural UNC 2A Black Finish Heavy Hex Bolts Fully Thread

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    Buy cheap ASTM A449 Structural UNC 2A Black Finish Heavy Hex Bolts Fully Thread from wholesalers
     
    Buy cheap ASTM A449 Structural UNC 2A Black Finish Heavy Hex Bolts Fully Thread from wholesalers
    • Buy cheap ASTM A449 Structural UNC 2A Black Finish Heavy Hex Bolts Fully Thread from wholesalers
    • Buy cheap ASTM A449 Structural UNC 2A Black Finish Heavy Hex Bolts Fully Thread from wholesalers
    • Buy cheap ASTM A449 Structural UNC 2A Black Finish Heavy Hex Bolts Fully Thread from wholesalers

    ASTM A449 Structural UNC 2A Black Finish Heavy Hex Bolts Fully Thread

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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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    ASTM A449 Structural UNC 2A Black Finish Heavy Hex Bolts Fully Thread

    ASTM A449 structural UNC 2A fully thread black finish heavy hex bolt


    This specification covers chemical and mechanical requirements for two types of quenched and tempered steel bolts and studs, intended for use in general application with high strength requirement. ASTM A449 specification includes type 1 medium carbon steel bolts and studs manufactured in diameter 1/4 inch to 3 inch for imperial connections and from M6 to M76 for metric connections; Whereas A449 type 2 is low carbon martensite steel bolts and studs manufactured in diameter 1/4 inch to 1 inch for imperial connections and M6 to M24 for metric connections. We manufactures and supplies ASTM A449 Type 1 & Type 2 Bolts, Studs, etc with fine precision, superior integrity along with EN 10204 Type 3.1 Certification.


    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 ASTM A449 Structural UNC 2A Black Finish Heavy Hex Bolts Fully Thread for sale
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