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ASTM A1072/A1072M-11

Current Revision

Standard Specification for Zinc-5 % Aluminum (Hot-Dip) Coatings on Iron and Steel Products

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1.1 This specification covers the requirements for zinc-5 % aluminum coated, by the hot-dip process on iron and steel products. The coating may also contain small amounts of elements other than zinc and aluminum that are intended to improve processing and the characteristics of the coated product. These metallic coatings include zinc- 5 %-aluminum (Zn-5Al), zinc-5 %-aluminum-mischmetal (Zn-5Al-MM) and zinc-5 %-aluminum-magnesium (Zn- %Al-Mg).

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

1.3 Fabricated reinforcing steel bar assemblies are covered by the present specification.

1.4 This specification is applicable to orders in either inch-pound units (as A1072) or SI units (as A1072M). 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 hot-dip coater when the order is placed.


This specification covers the requirements for zinc-5% aluminium coated, by the hot-dip process on iron and steel products. The coating may also contain small amounts of elements other than zinc and aluminium that are intended to improve processing and the characteristics of the coated product. This specification also examines the coating properties of the material, such as coating thickness and finish. It also identifies the tests that are conducted on the material, namely the thickness of coating test, the magnetic thickness measurements, the stripping method, the weighing before and after hot-dip coating, microscopy, adhesion, and embrittlement.


SDO ASTM: ASTM International
Document Number A1072
Publication Date Nov. 15, 2011
Language en - English
Page Count 6
Revision Level 11
Supercedes
Committee A05.13
Publish Date Document Id Type View
Nov. 15, 2011 A1072_A1072M-11 Revision
May 1, 2020 A1072_A1072M-11R20 Reaffirmation
Oct. 1, 2015 A1072_A1072M-11R15 Reaffirmation