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AASHTO M 232M/M 232
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AASHTO M 232M/M 232 2010 Edition, January 1, 2010 Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware
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Description / Abstract:
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 time
sufficient 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.
The values stated in SI units are to be regarded as the standard. The equivalent inch-pound units may only be approximate.
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.
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.
The values stated in SI units are to be regarded as the standard. The equivalent inch-pound units may only be approximate.
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.