ASTM A 153/A 153M Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware
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ASTM A 153/A 153M Document Information:
Title
Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware
ASTM International
Publication Date:
May 1, 2009
Scope:
This specification covers zinc coatings applied by the hot-dip
process on iron and steel hardware. The hot-dip galvanizing process
consists of parts being immersed in molten zinc for a sufficient
time to allow a metallurgical reaction between iron from the steel
surface and the molten zinc, resulting in the formation of Zn/Fe
alloy layers bonding the coating to the steel surface.
This specification is intended to be applicable to hardware
items that are centrifuged or otherwise handled to remove excess
galvanizing bath metal (free zinc). Coating thickness grade
requirements reflect this.
This specification is applicable to orders in either inch-pound
units (as A 153) or in SI units (as A 153M). 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
brackets. 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.
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.
*A Summary of Changes section appears at the end of this
standard.
Keywords:
- coatings, zinc
- galvanized coatings
- steel hardware, zinc coated
- steel products, metallic coated
- zinc coatings, steel products
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