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) | 0.002C | 0.003 | 0.005 | 0.003 | 0.003 | 0.001 | …D | … | … | … | … | … | … | … | 99.99 | … |
99.99 ZincB
(Z15005) | 0.01 | 0.02 | 0.02 | 0.02 | 0.03 | … | … | … | … | … | … | … | … | … | 99.9 | 0.10 total non-Zn |
99.995 Zinc
(…)E | 0.001 | 0.003 | 0.001 | 0.002 | 0.003 | 0.003 | … | … | … | … | … | … | … | … | 99.995 | 0.005 |
99.95 Zinc
(…) | 0.01 | 0.02 | 0.001 | 0.02 | 0.03 | 0.001 | … | … | … | … | … | … | … | … | 99.95 | 0.050 |
99.95 Zinc
(…) | 0.01 | 0.005 | 0.7 | 0.01 | 0.005 | 0.001 | … | … | … | … | … | 0.01 | 0.01 | 0.18 | 99 | 1.0 |
98Zn/2Al
(Z30402) | 1.5-2.5 | 0.005 | 0.005 | 0.02 | 0.005 | 0.003 | 0.10 | 0.015 | 0.02 | 0.002 | 0.005 | 0.02 | … | … | remainder | … |
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 |
|---|
| 3 | 3 | 10 | 75 | 180 | 15 |
| 4 | 4 | 13 | 100 | 180 | 15 |
| 5 | 5 | 16 | 125 | 180 | 15 |
| 6 | 6 | 19 | 150 | 180 | 15 |
| 7 | 7 | 22 | 175 | 180 | 45 |
| 8 | 8 | 25 | 200 | 180 | 45 |
| 9 | 9 | 29 | 230 | 180 | 45 |
| 10 | 10 | 32 | 250 | 180 | 45 |
| 11 | 11 | 36 | 280 | 180 | 45 |
| 14 | 17 | 43 | 430 | 90 | 45 |
| 18 | 23 | 57 | 580 | 90 | 45 |
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
ACI301 Specifications for Structural Concrete
Concrete Reinforcing Steel Institute
VoluntaryCertificati for Fusion Bonded Epoxy Coating Applicator Plants
American Welding Society
AWSâC2.25/C2.25 Specification for Thermal Spray Feedstock--Solid and Composite Wire and Ceramic Rods
NACE International Standard
RP-287 Field Measurement of Surface Profile of Abrasive Blast-Cleaned Steel Surface Using a Replica Tape
Society for Protective Coatings Specifications
SSPC-VIS1 Pictorial Surface Preparation standards for Painting Steel Surfaces
Keywords
alloy zinc coating; barrier organic coating; coating requirements; concrete reinforcement; corrosion resistance; dual coated; powder coating; steel bars; thermal spray coating (metallization); Steel reinforcing bars; Zinc ;
ICS Code
ICS Number Code 25.220.40 (Metallic coatings); 25.220.60 (Organic coatings)
DOI: 10.1520/A1055_A1055M-08A
ASTM International is a member of CrossRef.
Citing ASTM Standards
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