ASTM D2803-09(2020)

Standard Guide for Testing Filiform Corrosion Resistance of Organic Coatings on Metal

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STANDARD published on 1.6.2020

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The information about the standard:

Designation standards: ASTM D2803-09(2020)
Publication date standards: 1.6.2020
SKU: NS-997576
The number of pages: 3
Approximate weight : 9 g (0.02 lbs)
Country: American technical standard
Category: Technical standards ASTM

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The category - similar standards:

Organic coatings

Annotation of standard text ASTM D2803-09(2020) :

Keywords:
filiform,, ICS Number Code 25.220.60 (Organic coatings)

Additional information

Significance and Use

5.1 Some organic coatings applied to metal substrates exhibit filiform corrosion when there is a break in the coating film and the relative humidity is in the 70 to 95 % range.

5.2 This guide can be used to determine the susceptibility of organic coated metal substrates to the formation of filiform corrosion.

1. Scope

1.1 This guide covers three procedures for determining the susceptibility of organic-coated metal substrates to formation of filiform corrosion.

1.2 This guide is limited to the determination of whether filiform corrosion will occur between the organic coating and substrate.

1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

Note 1: Procedure B of this standard is equivalent to ISO 4623.

1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.5 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.

2. Referenced Documents

ISO 4623–2	Paints and Varnishes--Determination of resistance to filiform corrosion-Part 2: On aluminum
ISO 4623–1	Paints and Varnishes--Determination of resistance to filiform corrosion-Part 1: On steel
E104-20a	Standard Practice for Maintaining Constant Relative Humidity by Means of Aqueous Solutions (Includes all amendments and changes 12/21/2020).
D7091-22	Standard Practice for Nondestructive Measurement of Dry Film Thickness of Nonmagnetic Coatings Applied to Ferrous Metals and Nonmagnetic, Nonconductive Coatings Applied to Non-Ferrous Metals
D1005-95(2020)	Standard Test Method for Measurement of Dry-Film Thickness of Organic Coatings Using Micrometers
D609-17(2022)	Standard Practice for Preparation of Cold-Rolled Steel Panels for Testing Paint, Varnish, Conversion Coatings, and Related Coating Products
D1730-09(2020)	Standard Practices for Preparation of Aluminum and Aluminum-Alloy Surfaces for Painting
ISO 4628–10	Paints and Varnishes--Evaluation of degradation of coatings--Designation of quantity and size of defects and of intensity of changes-Part 10: Assessment of filiform corrosion
D1654-08(2016)e1	Standard Test Method for Evaluation of Painted or Coated Specimens Subjected to Corrosive Environments (Includes all amendments and changes 5/3/2017).
B117-19	Standard Practice for Operating Salt Spray (Fog) Apparatus
D823-18(2022)	Standard Practices for Producing Films of Uniform Thickness of Paint, Coatings and Related Products on Test Panels

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