ASTM A1060/A1060M-22

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Designation: A1060/A1060M − 16b A1060/A1060M − 22
Standard Specification for
Zinc-Coated (Galvanized) Steel Welded Wire Reinforcement,
Plain and Deformed, for Concrete
This standard is issued under the fixed designation A1060/A1060M; the number immediately following the designation indicates the
year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last
reapproval. A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope*
1.1 This specification covers zinc-coated steel welded wire reinforcement, plain and deformed, or a combination of deformed and
plain wires, for reinforcement of concrete, in sizes not less than 0.080 in. [2.03 mm] and over nominal diameter for plain wire and
0.113 in. [2.87 mm] and over for deformed wire.
1.2 This specification is intended to be applicable to cold-worked wire, drawn or rolled, plain or deformed, coated in a continuous
process.
1.3 An alternative to a continuous coating process of wire before fabrication is a hot-dip process, where the welded wire
reinforcement is immersed in a bath of molten zinc.
NOTE 1—Data on the corrosion resistance of galvanized steels in concrete are limited. The user is cautioned that the laboratory testing performed on this
material has been insufficient and may not accurately reflect the performance of the material when embedded in concrete as reinforcement.
1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each
system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the
two systems may result in non-conformance with the standard.
1.5 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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.6 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 ASTM Standards:
A90/A90M Test Method for Weight [Mass] of Coating on Iron and Steel Articles with Zinc or Zinc-Alloy Coatings
A780 Practice for Repair of Damaged and Uncoated Areas of Hot-Dip Galvanized Coatings
A1064/A1064M Specification for Carbon-Steel Wire and Welded Wire Reinforcement, Plain and Deformed, for Concrete
This specification is under the jurisdiction of ASTM Committee A01 on Steel, Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee A01.05
on Steel Reinforcement.
Current edition approved Sept. 1, 2016Nov. 1, 2022. Published September 2016November 2022. Originally approved in 2010. Last previous edition approved in 2016 as
A1060/A1060M – 16a.A1060/A1060M – 16b. DOI:10.1520/A1060_A1060M-16B.DOI:10.1520/A1060_A1060M-22.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
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A1060/A1060M − 22
B6 Specification for Zinc
B487 Test Method for Measurement of Metal and Oxide Coating Thickness by Microscopical Examination of Cross Section
E376 Practice for Measuring Coating Thickness by Magnetic-Field or Eddy Current (Electromagnetic) Testing Methods
2.2 Military Standard:
MIL-STD-129 Marking for Shipment and Storage
2.3 Federal Standard:
Fed. Std. No. 123 Marking for Shipments (Civil Agencies)
3. Terminology
3.1 Definitions of Terms Specific to This Standard:this Specification:
3.1.1 continuous coating, n—of metallic coated steel products, the process of uninterrupted passage of long lengths of steel
products, usually steel sheet, tube, pipe, or wire, through the various processing steps such as cleaning and coating.
4. Ordering Information
4.1 Orders for zinc-coated welded wire reinforcement under this specification shall contain the following information:
4.1.1 Quantity (weight [mass] or square area),
4.1.2 Name of material (galvanized welded wire reinforcement),
4.1.3 Required zinc coating weight [mass] (coated before fabrication) or zinc coating thickness (coated after fabrication),
4.1.4 Packaging (see Section 13), and
4.1.5 ASTM designation A1060 [A1060M] and year of issue.
4.2 The purchaser shall have the option to specify additional requirements, including but not limited to, the following:
4.2.1 Wire size number, wire spacing, and sheet or roll width and length,
4.2.2 Minimum yield strength or Grade, and
4.2.3 Requirements for inspection (see Section 9),
5. General Requirements
5.1 The wire used in the manufacture of welded wire reinforcement shall conform to Specification A1064/A1064M. After
galvanizing, the welded wire reinforcement shall meet the required mechanical properties of Specification A1064/A1064M except
for the bend test requirements as prescribed in Table 1 of this specification.
TABLE 1 Mandrel Diameters for Test for Adherence of Zinc
Coating Inch-Pound Units [SI Units]
Mandrel Diameters of Coating Classes and Grades
Class 3 or A, Grade 50,
Regular and
Wire Diameter 4, B, 5, and 60, 65, and
Class 1
C 80
A
Under 1D 3D 3D
0.148 [3.70]
0.148 [3.70] 2D 4D 4D
to
0.500 [12.7]
over 3D 5D 5D
0.500 [12.7]
A
D = nominal wire diameter being tested.
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A1060/A1060M − 22
5.2 Welded wire reinforcement shall be furnished either in flat sheets, or in rolls, as specified by the purchaser.
5.3 The zinc used for coating shall be any grade that conforms to Specification B6.
6. Galvanizing
6.1 Mass [Weight] Thickness of Coating and Test:
6.1.1 This specification includes six classes of coating weight [mass] when the welded wire reinforcement is coated before
fabrication and four coating thickness grades when the welded wire reinforcement is coated after fabrication. The weight [mass]
of zinc coating is based on the measured diameter of the wire when the stripping method is performed and the nominal diameter
for all other methods, and shall conform to the requirements shown in Table 2 or Table 3. Individual results not more than 10 %
below the minimum values specified in Table 2 or Table 3 are allowed if the average of at least two samples from the same coil
2 2
are equal to or greater than the minimum, individual results shall be not less than 1.08 oz/ft [330 g/m ].
6.1.1.1 When the product is coated before fabrication in a continuous coating process, coating weights are given in Table 2 for
various zinc coating classes.
NOTE 2—Zinc coated wire produced as “regular coating” shall have the full surface covered with zinc, but there is no specified minimum weight of
coating.
6.1.1.2 When the product is coated after fabrication in a hot-dip process, coating thickness are given in Table 3 for various zinc
coating grades.
NOTE 3—At the purchaser’s request the galvanized coating may be chromate treated. This is to minimize a reaction between the reinforcing steel and fresh
portland cement paste. Proprietary chromating solutions of equivalent strength are permitted in place of the generic chemical treatment specified.
6.1.2 Magnetic Thickness Measurements—The weight [mass] of the coating may be determined by magnetic thickness gage
measurements in accordance with Practice E376. The thickness measurement is used to calculate the weight [mass] by multiplying
it by the surface area of coated wire and by the zinc density. Because this form of testing can yield inconsistent and potentially
unreliable results on smaller sizes of wire, one or more of the following methods shall be permitted to be used to referee and take
precedence over the results obtained by magnetic thickness measurements.
6.1.2.1 Stripping Method—The weight [mass] shall be determined by stripping the coating from the steel wire specimen in
accordance with Section 8 and Test Method A90/A90M.
6.1.2.2 Weighing Before and After Galvanizing—The weight [mass] shall be determined by weighing the sample before and after
galvanizing. The difference between the two measurements divided by the surface area of the sample provides the weight [mass].
The original weighing shall occur after pickling and drying. The second weighing shall occur after cooling to ambient temperature.
6.1.2.3 Microscopy—The weight [mass] shall be determined by cross-sectional and optical measurement in accordance with Test
Method B487. A cross-section sample of the steel shall be polished and examined with an optical microscope to determine the
coating thickness. The coating weight [mass] shall be determined by multiplying coating thickness by the surface area of the coated
sample and by the density of zinc.
2 2
TABLE 2 Minimum Weight [Mass] of Zinc Coating, oz/ft [g ⁄m ] Coated Before Fabrication
Wire Diameter
Class 1 Class 2 Class 3 or A Class B Class 5 Class C
A
in. [mm]
0.080 [2.03] 0.25 [76] 0.70 [214] 1.20 [366] 1.40 [427] 2.00 [610] 2.10 [641]
0.099 [2.50] 0.28 [85] 0.70 [214] 1.20 [366] 1.60 [488] 2.00 [610] 2.40 [732]
0.135 [3.40] 0.30 [92] 0.85 [260] 1.20 [366] 1.70 [520] 2.00 [610] 2.55 [778]
0.148 [3.80] 0.35 [107] 0.90 [275] 1.20 [366] 1.80 [550] 2.00 [610] 2.70 [824]
0.162 [4.10] 0.35 [107] 0.90 [275] 1.20 [366] 1.80
...