ASTM A1094/A1094M-16
(Specification)Standard Specification for Continuous Hot-Dip Galvanized Steel Bars for Concrete Reinforcement
Standard Specification for Continuous Hot-Dip Galvanized Steel Bars for Concrete Reinforcement
SCOPE
1.1 This specification covers steel reinforcing bars, with protective zinc or zinc-alloy coatings applied by the continuous hot-dip process.
Note 1: The galvanizer is identified throughout this specification as the manufacturer.
1.2 Guidelines for construction practices at the job-site are presented in Appendix X1.
1.3 Guidelines for use of continuous hot-dip galvanized reinforcing bars with non-galvanized steel forms are presented in Appendix X2.
1.4 The text of this specification references notes and footnotes which provide explanatory material. These notes and footnotes shall not be considered requirements of the specification.
1.5 This specification is applicable for orders in either inch-pound units (as Specification A1094) or SI units (as Specification A1094M).
1.6 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. Combining values from the two systems may result in non-conformance with this specification.
1.7 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.
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Designation:A1094/A1094M −16
Standard Specification for
Continuous Hot-Dip Galvanized Steel Bars for Concrete
1
Reinforcement
This standard is issued under the fixed designation A1094/A1094M; 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* 2. Referenced Documents
2
1.1 This specification covers steel reinforcing bars, with 2.1 ASTM Standards:
protectivezincorzinc-alloycoatingsappliedbythecontinuous A90/A90M Test Method for Weight [Mass] of Coating on
hot-dip process. Iron and Steel Articles with Zinc or Zinc-Alloy Coatings
A615/A615M SpecificationforDeformedandPlainCarbon-
NOTE 1—The galvanizer is identified throughout this specification as
Steel Bars for Concrete Reinforcement
the manufacturer.
A706/A706M Specification for Deformed and Plain Low-
1.2 Guidelines for construction practices at the job-site are
Alloy Steel Bars for Concrete Reinforcement
presented in Appendix X1.
A780/A780M PracticeforRepairofDamagedandUncoated
1.3 Guidelines for use of continuous hot-dip galvanized
Areas of Hot-Dip Galvanized Coatings
reinforcing bars with non-galvanized steel forms are presented
A996/A996M Specification for Rail-Steel and Axle-Steel
in Appendix X2.
Deformed Bars for Concrete Reinforcement
B6 Specification for Zinc
1.4 The text of this specification references notes and
B487 Test Method for Measurement of Metal and Oxide
footnotes which provide explanatory material. These notes and
Coating Thickness by Microscopical Examination of
footnotes shall not be considered requirements of the specifi-
Cross Section
cation.
B852 Specification for Continuous Galvanizing Grade
1.5 This specification is applicable for orders in either
(CGG) Zinc Alloys for Hot-Dip Galvanizing of Sheet
inch-pound units (as Specification A1094) or SI units (as
Steel
Specification A1094M).
E376 Practice for Measuring Coating Thickness by
1.6 The values stated in either inch-pound or SI units are to
Magnetic-Field or Eddy-Current (Electromagnetic) Test-
be regarded separately as standard.Within the text, the SI units
ing Methods
are shown in brackets. The values stated in each system may
3. Terminology
not be exact equivalents. Therefore, each system shall be used
independently of the other. Combining values from the two 3.1 Definitions of Terms Specific to This Specification:
3.1.1 black, adj—denotes the condition of not galvanized.
systems may result in non-conformance with this specification.
For purposes of this specification the word “black” does not
1.7 This specification does not purport to address all of the
refer to the color or condition of the surface, or to a surface
safety concerns, if any, associated with its use. It is the
deposit or contamination.
responsibility of the user of this specification to establish
3.1.2 continuous hot-dip galvanizing, n—the process of
appropriate safety and health practices and determine the
uninterrupted passage of long lengths of steel products through
applicability of regulatory limitations prior to use.
a molten bath of zinc or zinc-alloy.
3.1.2.1 Discussion—Tocontrolalloyformationandpromote
adhesion of the zinc or zinc-alloy coating with the steel base
1
This specification is under the jurisdiction ofASTM Committee A01 on Steel,
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
2
A01.05 on Steel Reinforcement. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved April 1, 2016. Published April 2016. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approvedin2015.Lastpreviouseditionapprovedin2015asA1094/A1094M–15a. Standards volume information, refer to the standard’s Document Summary page on
DOI: 10.1520/A1094_A1094M-16. the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
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A1094/A1094M−16
TABLE 1 Minimum Average Coating Thickness Grade and
metal, the molten coating metal composition normally contains
A
Equivalent Weight [Mass]
a percentage of aluminum usually in the range from 0.05 to
Coating
2 2 2
0.25. This aluminum is purposely supplied to the molten
µm mils oz/ft g/m mg/cm
Grade
coating bath, either as a specified ingredient in the zinc spelter
50 50 2.0 1.2 360 36
or by the addition of a master alloy containing aluminum.
A
The value in micrometres (µm) is based on the Coating Grade.The other values
2
3.1.3 lot, n—all bars of one size furnished to the same steel arebasedonconvent
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: A1094/A1094M − 15a A1094/A1094M − 16
Standard Specification for
Continuous Hot-Dip Galvanized Steel Bars for Concrete
1
Reinforcement
This standard is issued under the fixed designation A1094/A1094M; 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 steel reinforcing bars, with protective zinc or zinc-alloy coatings applied by the continuous hot-dip
process.
NOTE 1—The galvanizer is identified throughout this specification as the manufacturer.
1.2 Guidelines for construction practices at the job-site are presented in Appendix X1.
1.3 Guidelines for use of continuous hot-dip galvanized reinforcing bars with non-galvanized steel forms are presented in
Appendix X2.
1.4 The text of this specification references notes and footnotes which provide explanatory material. These notes and footnotes
shall not be considered requirements of the specification.
1.5 This specification is applicable for orders in either inch-pound units (as Specification A1094) or SI units (as Specification
A1094M).
1.6 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. Combining values from the two systems may result in non-conformance with this specification.
1.7 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
2
2.1 ASTM Standards:
A90/A90M Test Method for Weight [Mass] of Coating on Iron and Steel Articles with Zinc or Zinc-Alloy Coatings
A615/A615M Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement
A706/A706M Specification for Deformed and Plain Low-Alloy Steel Bars for Concrete Reinforcement
A780/A780M Practice for Repair of Damaged and Uncoated Areas of Hot-Dip Galvanized Coatings
A996/A996M Specification for Rail-Steel and Axle-Steel Deformed Bars for Concrete Reinforcement
B6 Specification for Zinc
B487 Test Method for Measurement of Metal and Oxide Coating Thickness by Microscopical Examination of Cross Section
B852 Specification for Continuous Galvanizing Grade (CGG) Zinc Alloys for Hot-Dip Galvanizing of Sheet Steel
E376 Practice for Measuring Coating Thickness by Magnetic-Field or Eddy-Current (Electromagnetic) Testing Methods
3. Terminology
3.1 Definitions of Terms Specific to This Specification:
3.1.1 black, adj—denotes the condition of not galvanized. For purposes of this specification the word “black” does not refer to
the color or condition of the surface, or to a surface deposit or contamination.
1
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 Nov. 1, 2015April 1, 2016. Published April 2016. Originally approved in 2015. Last previous edition approved in 2015 as A1094/A1094M –
15. Published 15a. January 2016. DOI: 10.1520/A1094_A1094M-15A.10.1520/A1094_A1094M-16.
2
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
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
A1094/A1094M − 16
3.1.2 continuous hot-dip galvanizing, n—the process of uninterrupted passage of long lengths of steel products through a molten
bath of zinc or zinc-alloy.
3.1.2.1 Discussion—
To control alloy formation and promote adhesion of the zinc or zinc-alloy coating with the steel base metal, the molten coating
metal composition normally contains a percentage of aluminum usually in the range from 0.05 to 0.25. This aluminum is purposely
supplied to the molten coating bath, either as a sp
...
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