ASTM G85-19
(Practice)Standard Practice for Modified Salt Spray (Fog) Testing
Standard Practice for Modified Salt Spray (Fog) Testing
SIGNIFICANCE AND USE
3.1 This practice is applicable to ferrous and nonferrous metals; also organic and inorganic coatings. The variations described herein are useful when a different or more corrosive environment than the salt fog described in Practice B117 is desired.
SCOPE
1.1 This practice covers and sets forth conditions for five modifications in salt spray (fog) testing for specification purposes. These are in chronological order of their development:
1.1.1 Annex A1, acetic acid-salt spray test, continuous.
1.1.2 Annex A2, cyclic acidified salt spray test.
1.1.3 Annex A3, seawater acidified test, cyclic (SWAAT).
1.1.4 Annex A4, SO2 salt spray test, cyclic.
1.1.5 Annex A5, dilute electrolyte cyclic fog dry test.
1.2 This practice does not prescribe the type of modification, test specimen or exposure periods to be used for a specific product, nor the interpretation to be given to the results.
1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard.
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.
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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.
Designation:G85 −19
Standard Practice for
1
Modified Salt Spray (Fog) Testing
ThisstandardisissuedunderthefixeddesignationG85;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope D609Practice for Preparation of Cold-Rolled Steel Panels
for Testing Paint, Varnish, Conversion Coatings, and
1.1 This practice covers and sets forth conditions for five
Related Coating Products
modifications in salt spray (fog) testing for specification
D1141Practice for the Preparation of Substitute Ocean
purposes. These are in chronological order of their develop-
Water
ment:
D1193Specification for Reagent Water
1.1.1 Annex A1, acetic acid-salt spray test, continuous.
D1654Test Method for Evaluation of Painted or Coated
1.1.2 Annex A2, cyclic acidified salt spray test.
Specimens Subjected to Corrosive Environments
1.1.3 Annex A3, seawater acidified test, cyclic (SWAAT).
E70Test Method for pH of Aqueous Solutions With the
1.1.4 Annex A4, SO salt spray test, cyclic.
2
Glass Electrode
1.1.5 Annex A5, dilute electrolyte cyclic fog dry test.
1.2 This practice does not prescribe the type of
3. Significance and Use
modification, test specimen or exposure periods to be used for
a specific product, nor the interpretation to be given to the
3.1 This practice is applicable to ferrous and nonferrous
results.
metals; also organic and inorganic coatings. The variations
described herein are useful when a different or more corrosive
1.3 The values stated in SI units are to be regarded as
environment than the salt fog described in Practice B117 is
standard. The values given in parentheses after SI units are
desired.
provided for information only and are not considered standard.
1.4 This standard does not purport to address all of the
4. Apparatus
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
4.1 Cabinet:
priate safety, health, and environmental practices and deter-
4.1.1 The apparatus required for salt spray (fog) testing
mine the applicability of regulatory limitations prior to use.
consists of a fog chamber, a salt solution reservoir, a supply of
1.5 This international standard was developed in accor-
suitably conditioned compressed air, one or more atomizing
dance with internationally recognized principles on standard-
nozzles,specimensupports,provisionforheatingthechamber,
ization established in the Decision on Principles for the
and necessary means of control. The size and detailed con-
Development of International Standards, Guides and Recom-
struction of the cabinet are optional, provided the conditions
mendations issued by the World Trade Organization Technical
obtainedmeettherequirementsofthispractice.Thematerialof
Barriers to Trade (TBT) Committee.
construction shall be such that it will not affect the corrosive-
2. Referenced Documents ness of the fog. Suitable apparatus that may be used to obtain
2 these conditions is described inAppendix X1 of Practice B117
2.1 ASTM Standards:
with necessary modifications described in each annex of this
B117Practice for Operating Salt Spray (Fog) Apparatus
practice.
4.1.2 Design the cabinet so that drops of solution that
1
This practice is under the jurisdiction ofASTM Committee G01 on Corrosion
of Metals and is the direct responsibility of Subcommittee G01.05 on Laboratory accumulate on the ceiling or cover of the chamber do not fall
Corrosion Tests.
on the specimens being tested. Do not return drops of solution
Current edition approved Nov. 1, 2019. Published December 2019. Originally
that fall from the specimens to the solution reservoir for
approved in 1985. Last previous edition approved in 2011 as G85–11. DOI:
respraying.
10.1520/G0085–19.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
4.1.3 Equip the cabinet with one or more timing devices to
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
provide for intermittent spraying or periodic introduction of a
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. gas, or both.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
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G85−19
4.2 Air Supply: solution for the chemical cleaning, or passivation, of stainless
4.2.1 Make sure the compressed air
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: G85 − 11 G85 − 19
Standard Practice for
1
Modified Salt Spray (Fog) Testing
This standard is issued under the fixed designation G85; the number immediately following the designation indicates the year of original
adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope
1.1 This practice covers and sets forth conditions for five modifications in salt spray (fog) testing for specification purposes.
These are in chronological order of their development:
1.1.1 Annex A1,acetic acetic acid-salt spray test, continuous.
1.1.2 Annex A2,cyclic cyclic acidified salt spray test.
1.1.3 Annex A3,seawater seawater acidified test, cyclic (SWAAT).
1.1.4 Annex A4,SO SO salt spray test, cyclic.
2
1.1.5 Annex A5,dilute dilute electrolyte cyclic fog dry test.
1.2 This practice does not prescribe the type of modification, test specimen or exposure periods to be used for a specific product,
nor the interpretation to be given to the results.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this The values
given in parentheses after SI units are provided for information only and are not considered standard.
1.3.1 Exception—Fahrenheit temperature values are given for information only throughout this practice.
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 consult and establish appropriate safety safety, health, and healthenvironmental 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
2
2.1 ASTM Standards:
B117 Practice for Operating Salt Spray (Fog) Apparatus
D609 Practice for Preparation of Cold-Rolled Steel Panels for Testing Paint, Varnish, Conversion Coatings, and Related Coating
Products
D1141 Practice for the Preparation of Substitute Ocean Water
D1193 Specification for Reagent Water
D1654 Test Method for Evaluation of Painted or Coated Specimens Subjected to Corrosive Environments
E70 Test Method for pH of Aqueous Solutions With the Glass Electrode
3. Significance and Use
3.1 This practice is applicable to ferrous and nonferrous metals; also organic and inorganic coatings. The variations described
herein are useful when a different or more corrosive environment than the salt fog described in Practice B117 is desired.
4. Apparatus
4.1 Cabinet:
1
This practice is under the jurisdiction of ASTM Committee G01 on Corrosion of Metals and is the direct responsibility of Subcommittee G01.05 on Laboratory Corrosion
Tests.
Current edition approved May 1, 2011Nov. 1, 2019. Published August 2011December 2019. Originally approved in 1985. Last previous edition approved in 20092011
as G85–09.–11. DOI: 10.1520/G0085-11.10.1520/G0085–19.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’sstandard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
G85 − 19
4.1.1 The apparatus required for salt spray (fog) testing consists of a fog chamber, a salt solution reservoir, a supply of suitably
conditioned compressed air, one or more atomizing nozzles, specimen supports, provision for heating the chamber, and necessary
means of control. The size and detailed construction of the cabinet are optional, provided the conditions obtained meet the
requirements of this practice. The material of construction shall be such that it will not affect the corrosiveness of the fog. Suitable
apparatus that may be used to obtain these conditions is described in Appendix X1 of Practice B117 with necessary modifications
described in each annex of this practice.
4.1.2 Design the cabinet so that drops of solution that
...
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