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ASTM A 780/A780M : 2009 : R2015

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Standard Practice for Repair of Damaged and Uncoated Areas of Hot-Dip Galvanized Coatings
Available format(s)

Hardcopy , PDF

Superseded date

09-18-2020

Language(s)

English

Published date

05-01-2015

CONTAINED IN VOL. 01.06, 2017 Defines methods that may be used to repair damaged hot-dip galvanized coatings on hardware, structural shapes, and other products fabricated prior to hot-dip galvanizing, and uncoated areas remaining after initial hot-dip galvanizing.

1.1This practice describes methods that may be used to repair damaged hot-dip galvanized coatings on hardware, structural shapes, and other products fabricated prior to hot-dip galvanizing, and uncoated areas remaining after initial hot-dip galvanizing. The damage may be the result of welding or cutting (flame), in which case the coating will be damaged predominantly by burning. This practice can also be used to repair hot-dip galvanized coatings damaged by excessively rough handling during shipping or erection. Requirements concerning the renovation of uncoated areas remaining after initial hot-dip galvanizing are contained within the applicable material specification.

1.2This practice describes the use of low melting point zinc alloy repair rods or powders made specifically for this purpose, the use of paints containing zinc dust, and the use of sprayed zinc (metallizing).

1.3The extent of repair shall be limited to an area mutually agreeable to the contracting parties. Similarly, contracting parties shall agree to the repair method to be used.

1.4This specification is applicable to orders in either inch-pound units (as A780) or in SI units (as A780M). 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.

1.5This standard does not purport to address the safety problems, 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.

Committee
A 05
DevelopmentNote
Supersedes ASTM A 780. (06/2009)
DocumentType
Standard Practice
Pages
4
ProductNote
Reconfirmed 2015
PublisherName
American Society for Testing and Materials
Status
Superseded
SupersededBy
Supersedes

SSPC-SP 11 : 2012 POWER-TOOL CLEANING TO BARE METAL
SSPC-SP 10 : 2015 NEAR-WHITE BLAST CLEANING
SSPC-SP 5 : 2015 WHITE METAL BLAST CLEANING

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