ASTM A1055/A1055M-08ae1

ASTM A1055/A1055M-08ae1 - 1.10.2008

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 Zinc^B (Z13005)	0.002^C	0.003	0.005	0.003	0.003	0.001	…^D	…	…	…	…	…	…	…	99.99	…
99.99 Zinc^B (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 mm^A	Bar No.	Mandrel Diameter in.^A	Bend Angle (After Rebound, degrees)	Time to Completion max, s
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

G20-10(2024)	Standard Test Method for Chemical Resistance of Pipeline Coatings
B117-26	Standard Practice for Operating Salt Spray (Fog) Apparatus
G8-24	Standard Test Methods for Cathodic Disbonding of Coated Steel
E527-23	Standard Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
E29-22	Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
D4060-25	Standard Test Method for Abrasion Resistance of Organic Coatings by the Taber Abraser
B833-20(2025)	Standard Specification for Zinc and Zinc Alloy Wire for Thermal Spraying (Metallizing) for the Corrosion Protection of Steel
A944-22	Standard Test Method for Comparing Bond Strength of Steel Reinforcing Bars to Concrete Using Beam-End Specimens
Voluntary Certification Program	for Fusion Bonded Epoxy Coating Applicator Plants
ACI 301	Specifications for Structural Concrete
A706/A706M-26	Standard Specification for Deformed and Plain Low-Alloy Steel Bars for Concrete Reinforcement
A615/A615M-26	Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement
SSPC-VIS 1	Pictorial Surface Preparation standards for Painting Steel Surfaces
RP-287	Field Measurement of Surface Profile of Abrasive Blast-Cleaned Steel Surface Using a Replica Tape
AWS C2.25/C2.25M	Specification for Thermal Spray Feedstock--Solid and Composite Wire and Ceramic Rods
G62-23	Standard Test Methods for Holiday Detection of Coatings used to Protect Pipelines
A996/A996M-24	Standard Specification for Rail-Steel and Axle-Steel Deformed Bars for Concrete Reinforcement
G14-04(2024)	Standard Test Method for Impact Resistance of Pipeline Coatings (Falling Weight Test)