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This specification covers plain and deformed steel wire and plain and deformed steel welded wire reinforcement with protective epoxy coating for use in concrete, masonry and mechanically stabilized earth applications. The materials under this specification shall be in accordance with other ASTM documents enlisted herein. Tests for coating thickness and continuity shall be made on each size of wire or style of welded wire reinforcement. Bend tests for coating flexibility shall be conducted on at least one wire of each size or style or welded wire reinforcement. If the specimen fails to meet the specified requirements for coating thickness, continuity, or bend test (if applicable), two retests on random specimens shall be conducted for each failed test. If both retests meet the specified requirements, the coated material represented by the specimens shall be accepted.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
1.1 This specification covers plain and deformed steel wire and plain and deformed steel welded wire reinforcement with protective epoxy coating. A Class A minimum coating thickness is required for wire and welded wire reinforcement intended for use in concrete and masonry. A Class B minimum coating thickness is required for wire and welded wire reinforcement intended for use in mechanically stabilized earth applications. A Type 1 coating is a fusion-bonded epoxy coating that has been formulated to be sufficiently flexible to allow bending of the coated wire or welded wire reinforcement. A Type 2 coating is a fusion-bonded epoxy coating that has not been designed to be sufficiently flexible to allow bending of the coated wire or welded wire reinforcement.
1.2 This specification is applicable for orders in either inch-pound units (as Specification A884) or SI units (as Specification A884M).
1.3 The values stated in either inch-pound or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other except as specifically noted in Table 1. Combining values from the two systems may result in non-conformance with this specification.
Wire Size No.
1.4 to 6
9 to 39
Two times the diameter
Four times the
1.4 This specification 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 specification to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
A775/A775M Specification for Epoxy-Coated Steel Reinforcing Bars
A934/A934M Specification for Epoxy-Coated Prefabricated Steel Reinforcing Bars
A1064/A1064M Specification for Carbon-Steel Wire and Welded Wire Reinforcement, Plain and Deformed, for Concrete
D4417 Test Methods for Field Measurement of Surface Profile of Blast Cleaned Steel
Society for Protective Coatings SpecificationsSSPC-PA2 Measurement of Dry Coating Thickness with Magnetic Gauges SSPC-SP10 Near-White Blast Cleaning SSPC-VIS1 Pictorial Surface Preparation Standards for Painting Steel Surfaces
American Concrete Institute SpecificationACI301 Specifications for Structural Concrete
Concrete Reinforcing Steel InstituteCRSI Voluntary Certification Program for Fusion Bonded Epoxy Coating Applicator Plants
ICS Number Code 77.140.65 (Steel wire, wir ropes and link chains)
UNSPSC Code 30111900(Concrete reinforcement hardware)
ASTM A884 / A884M-14, Standard Specification for Epoxy-Coated Steel Wire and Welded Wire Reinforcement, ASTM International, West Conshohocken, PA, 2014, www.astm.orgBack to Top