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ASTM A123/A123M - 24

Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products

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Edition date: 2024-05-01
In Force
Available languages: English
Summary:

This specification covers the standard requirements for hot-dip galvanized zinc coatings on iron and steel products made from rolled pressed and forged shapes, castings, plates, bars, and strips. This specification deals with both unfabricated products and fabricated products, for example, assembled steel products, structural steel fabrications, large tubes already bent or welded before galvanizing, and wire work fabricated from uncoated steel wire. Also covered here are steel forgings and iron castings incorporated into pieces fabricated before galvanizing or those too large to be centrifuged (or otherwise handled to remove excess galvanizing bath metal).
Keywords: coatings—zinc; galvanized coatings; steel products—metallic coated; zinc coatings—steel products;
Scope:

1.1 This specification covers the requirements for zinc coating (galvanizing) by the hot-dip process on iron and steel products made from rolled pressed and forged shapes, castings, plates, bars, and strips.

1.2 This specification covers both unfabricated products and fabricated products, for example, assembled steel products, structural steel fabrications, large tubes already bent or welded before galvanizing, and wire work fabricated from uncoated steel wire. This specification also covers steel forgings and iron castings incorporated into pieces fabricated before galvanizing or which are too large to be centrifuged (or otherwise handled to remove excess galvanizing bath metal).

Note 1: This specification covers those products previously addressed in Specifications A123-78 and A386-78.

1.3 This specification does not apply to wire, pipe, tube, or steel sheet which is galvanized on specialized or continuous lines, or to steel less than 22 gage (0.0299 in.) [0.76 mm] thick.

1.4 The galvanizing of hardware items that are to be centrifuged or otherwise handled to remove excess zinc (such as bolts and similar threaded fasteners, castings and rolled, pressed and forged items) shall be in accordance with Specification A153/A153M.

1.5 Fabricated reinforcing steel bar assemblies are covered by the present specification. The batch galvanizing of separate reinforcing steel bars shall be in accordance with Specification A767/A767M and the continuous galvanizing of reinforcing bars shall be in accordance with Specification A1094/A1094M.

1.6 This specification is applicable to orders in either inch-pound units (as A123) or SI units (as A123M). Inch-pound units and SI units are not necessarily exact equivalents. Within the text of this specification and where appropriate, SI units are shown in parentheses. Each system shall be used independently of the other without combining values in any way. In the case of orders in SI units, all testing and inspection shall be done using the metric equivalent of the test or inspection method as appropriate. In the case of orders in SI units, such shall be stated to the galvanizer when the order is placed.

1.7 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.
ICS: 25.220.40-Metallic coatings
CTN: A05.13 - A05.13

Otras Relaciones

Es referenciada por C1802/C1802M - 24

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Es referenciada por F1267-18R23

Es referenciada por F0987-04R22

Es referenciada por A0741-23

Es referenciada por A0761_A0761M-24

Es referenciada por F1019M-00R23

Es referenciada por A0964_A0964M-23

Es referenciada por A0385_A0385M-22

Es referenciada por D6386-22

Es referenciada por F0986-86R22

Es referenciada por A1115_A1115M-24

Es referenciada por A1075-12R22

Es referenciada por F3459-21

Es referenciada por E2112-23

Es referenciada por D6255/D6255M - 18(2025)

Es referenciada por F2919/F2919M - 12(2025)

Es referenciada por D7803 - 25

Es referenciada por F2548 - 24

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