ASTM A1055/A1055M-08a

    Historical Standard: ASTM A1055/A1055M-08a Standard Specification for Zinc and Epoxy Dual-Coated Steel Reinforcing Bars

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    ASTM A1055 / A1055M

    1. Scope

    1.1 This specification covers deformed and plain steel reinforcing bars with a dual coating of zinc alloy and an epoxy coating. The zinc-alloy layer is applied by the thermal spray coating method (metallizing) followed by an epoxy coating applied by the electrostatic spray method.

    Note 1—The coating applicator is identified throughout this specification as the manufacturer.

    1.2 Requirements of the zinc coating are contained in Table 1.

    1.3 Requirements for fusion-bonded powder coatings are contained in Annex A1.

    1.4 Guidelines for construction practices at the job-site are presented in Appendix X1.

    1.5 This specification is applicable for orders in either inch-pound or SI units.

    1.6 The values stated in either inch-pound units or SI units are to be regarded as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other, except as specifically noted in Table 2. Combining values from the two systems may result in nonconformance with this specification.

    1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

    TABLE 1 Chemical Composition Requirements for Zinc and Zinc-Alloy Wires

    Common Name
    (UNS)A
    Al,
    max
    unless noted
    Cd,
    max
    Cu,
    max
    Fe,
    max
    Pb,
    max
    Sn,
    max
    Sb,
    max
    Ag,
    max
    Bi,
    max
    As,
    max
    Ni,
    max
    Mg,
    max
    Mo,
    max
    Ti,
    max
    Zn,
    min
    Other,
    Total max
    99.99 ZincB
    (Z13005)
    0.002C0.0030.0050.0030.0030.001D99.99
    99.99 ZincB
    (Z15005)
    0.010.020.020.020.0399.90.10 total non-Zn
    99.995 Zinc
    ()E
    0.0010.0030.0010.0020.0030.00399.9950.005
    99.95 Zinc
    ()
    0.010.020.0010.020.030.00199.950.050
    99.95 Zinc
    ()
    0.010.0050.70.010.0050.0010.010.010.18991.0
    98Zn/2Al
    (Z30402)
    1.5-2.50.0050.0050.020.0050.0030.100.0150.020.0020.0050.02remainder

    A UNS designations were established in accordance with Practice E 527.

    B In accordance with ANSI/AWS A5.33.

    C The following applies to all specified limits in this table. For the purposes of determining conformance with this specification, an observed value obtained from analysis shall be rounded off to the nearest unit in the last right-hand place of figures used in expressing the limiting value, in accordance with the rounding method of Practice E 29.

    D indicates that the element is not applicable.

    E () indicates no Unified Numbering System (UNS) designation for this option.

    TABLE 2 Bend Test Requirements

    A 615, A 706,
    or A 996
    A 615M, A 706M,
    or A 996M
    Bend Angle
    (After
    Rebound,
    degrees)
    Time to
    Completion
    max, s
    Bar
    No.
    Mandrel
    Diameter
    mmA
    Bar
    No.
    Mandrel
    Diameter
    in.A
    33107518015
    441310018015
    551612518015
    661915018015
    772217518045
    882520018045
    992923018045
    10103225018045
    11113628018045
    1417434309045
    1823575809045

    A Mandrel diameters specified for similar size (shown on the same line) inch-pound bars and metric may be interchanged.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    A615/A615M Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement

    A706/A706M Specification for Low-Alloy Steel Deformed and Plain Bars for Concrete Reinforcement

    A944 Test Method for Comparing Bond Strength of Steel Reinforcing Bars to Concrete Using Beam-End Specimens

    A996/A996M Specification for Rail-Steel and Axle-Steel Deformed Bars for Concrete Reinforcement

    B117 Practice for Operating Salt Spray (Fog) Apparatus

    B833 Specification for Zinc and Zinc Alloy Wire for Thermal Spraying (Metallizing) for the Corrosion Protection of Steel

    D4060 Test Method for Abrasion Resistance of Organic Coatings by the Taber Abraser

    E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications

    E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)

    G8 Test Methods for Cathodic Disbonding of Pipeline Coatings

    G14 Test Method for Impact Resistance of Pipeline Coatings (Falling Weight Test)

    G20 Test Method for Chemical Resistance of Pipeline Coatings

    G62 Test Methods for Holiday Detection in Pipeline Coatings

    American Concrete Institute Standard

    ACI 301 Specifications for Structural Concrete

    Concrete Reinforcing Steel Institute

    Voluntary Certificat for Fusion Bonded Epoxy Coating Applicator Plants

    Society for Protective Coatings Specifications

    SSPC-VIS 1 Pictorial Surface Preparation standards for Painting Steel Surfaces

    NACE International Standard

    RP-287 Field Measurement of Surface Profile of Abrasive Blast-Cleaned Steel Surface Using a Replica Tape

    American Welding Society

    AWS C2.25/C2.25M Specification for Thermal Spray Feedstock--Solid and Composite Wire and Ceramic Rods


    ICS Code

    ICS Number Code 25.220.40 (Metallic coatings); 25.220.60 (Organic coatings)

    UNSPSC Code

    UNSPSC Code 30103623(Reinforcing bar or rebar or mesh)


    DOI: 10.1520/A1055_A1055M-08A

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