ASTM G85-02e1

Standard Practice for Modified Salt Spray (Fog) Testing

SIGNIFICANCE AND USE
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 B 117 is desired.
SCOPE
1.1 This practice 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 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 and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 09-Oct-2002
• ICS: 77.060 - Corrosion of metals
• Technical Committee: G01 - Corrosion of Metals
• Drafting Committee: G01.05 - Laboratory Corrosion Tests

Relations

• Replaces: ASTM G85-02 - Standard Practice for Modified Salt Spray (Fog) Testing
• Effective Date: 10-Oct-2002
• Replaced By: ASTM G85-09 - Standard Practice for Modified Salt Spray (Fog) Testing
• Effective Date: 01-Jul-2009
• Referred By: ASTM D1654-08(2016)e1 - Standard Test Method for Evaluation of Painted or Coated Specimens Subjected to Corrosive Environments
• Effective Date: 10-Oct-2002
• Referred By: ASTM G198-17 - Standard Test Method for Determining the Relative Corrosion Performance of Driven Fasteners in Contact with Treated Wood
• Effective Date: 10-Oct-2002
• Referred By: ASTM E3134-20 - Standard Specification for Transportation Tunnel Structural Components and Passive Fire Protection Systems
• Effective Date: 10-Oct-2002
• Referred By: ASTM G39-99(2021) - Standard Practice for Preparation and Use of Bent-Beam Stress-Corrosion Test Specimens
• Effective Date: 10-Oct-2002
• Referred By: ASTM B117-19 - Standard Practice for Operating Salt Spray (Fog) Apparatus
• Effective Date: 10-Oct-2002
• Referred By: ASTM D3794-22 - Standard Guide for Testing Coil Coatings
• Effective Date: 10-Oct-2002
• Referred By: ASTM B733-22 - Standard Specification for Autocatalytic (Electroless) Nickel-Phosphorus Coatings on Metal
• Effective Date: 10-Oct-2002
• Referred By: ASTM B456-17(2022) - Standard Specification for Electrodeposited Coatings of Copper Plus Nickel Plus<brk/> Chromium and Nickel Plus Chromium
• Effective Date: 10-Oct-2002
• Referred By: ASTM D7893-13(2018) - Standard Guide for Corrosion Test Panel Preparation, Testing, and Rating of Coil-Coated Building Products
• Effective Date: 10-Oct-2002
• Referred By: ASTM G112-22 - Standard Guide for Conducting Exfoliation Corrosion Tests in Aluminum Alloys
• Effective Date: 10-Oct-2002
• Referred By: ASTM B994/B994M-22 - Standard Specification for Nickel-Cobalt Alloy Coating
• Effective Date: 10-Oct-2002
• Referred By: ASTM D5894-21 - Standard Practice for Cyclic Salt Fog/UV Exposure of Painted Metal, (Alternating Exposures in a Fog/Dry Cabinet and a UV/Condensation Cabinet)
• Effective Date: 10-Oct-2002
• Referred By: ASTM D6577-15(2019) - Standard Guide for Testing Industrial Protective Coatings
• Effective Date: 10-Oct-2002

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
e1
Designation: G 85 – 02
Standard Practice for
1
Modified Salt Spray (Fog) Testing
ThisstandardisissuedunderthefixeddesignationG85;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1
e NOTE—Editorial changes were made in the Appendix for clarity August 2003.
1. Scope 3. Significance and Use
1.1 This practice sets forth conditions for five modifications 3.1 This practice is applicable to ferrous and nonferrous
in salt spray (fog) testing for specification purposes. These are metals; also organic and inorganic coatings. The variations
in chronological order of their development: described herein are useful when a different or more corrosive
1.1.1 Annex A1, acetic acid-salt spray test, continuous. environment than the salt fog described in Practice B117 is
1.1.2 Annex A2, cyclic acidified salt spray test. desired.
1.1.3 Annex A3, seawater acidified test, cyclic (SWAAT).
4. Apparatus
1.1.4 Annex A4,SO salt spray test, cyclic.
2
4.1 Cabinet:
1.1.5 Annex A5, dilute electrolyte cyclic fog dry test.
1.2 This practice does not prescribe the type of modifica- 4.1.1 The apparatus required for salt spray (fog) testing
consists of a fog chamber, a salt solution reservoir, a supply of
tion,testspecimenorexposureperiodstobeusedforaspecific
product, nor the interpretation to be given to the results. suitably conditioned compressed air, one or more atomizing
nozzles, specimen supports, provision for heating the chamber,
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the and necessary means of control. The size and detailed con-
struction of the cabinet are optional, provided the conditions
responsibility of the user of this standard to consult and
establish appropriate safety and health practices and deter- obtainedmeettherequirementsofthispractice.Thematerialof
construction shall be such that it will not affect the corrosive-
mine the applicability of regulatory limitations prior to use.
ness of the fog. Suitable apparatus that may be used to obtain
2. Referenced Documents
theseconditionsisdescribedinAppendixA1ofPracticeB117
2.1 ASTM Standards: with necessary modifications described in each annex.
2
B117 Practice for Operating Salt Spray (Fog) Apparatus 4.1.2 Design the cabinet so that drops of solution that
D609 Practice for Preparation of Cold-Rolled Steel Panels accumulate on the ceiling or cover of the chamber do not fall
for Testing Paint, Varnish, Conversion Coatings, and on the specimens being tested. Do not return drops of solution
3
Related Coating Products that fall from the specimens to the solution reservoir for
D1141 Practice for the Preparation of Substitute Ocean respraying.
4
Water 4.1.3 Equip the cabinet with one or more timing devices to
5
D1193 Specification for Reagent Water provide for intermittent spraying or periodic introduction of a
D1654 Test Method for Evaluation of Painted or Coated gas, or both.
3
Specimens Subjected to Corrosive Environments 4.2 Air Supply:
E70 Test Method for pH of Aqueous Solutions with the 4.2.1 Make sure the compressed air supply to the nozzle or
6
Glass Electrode nozzlesforatomizingthesaltsolutionisfreeofoilanddirtand
maintain the air supply between 69 and 172 kPa (10 and 25
psi).
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
NOTE 1—The air supply may be freed of oil and dirt by passing it
Corrosion Tests.
through a water scrubber or at least 610 mm (2 ft) of suitable cleaning
CurrenteditionapprovedOctober10,2002.PublishedFebruary2003.Originally
material such as asbestos, sheep’s wool, or activated alumina.
approved in 1985. Last previous edition approved in 1998 as G85–98.
2
Annual Book of ASTM Standards, Vol 03.02. 4.2.2 Temperature in the saturator tower (bubble tower)
3
Annual Book of ASTM Standards, Vol 06.01.
varies depending on the test method used.
4
Annual Book of ASTM Standards, Vol 11.02.
5 4.3 Conditions in Salt-Spray Chamber :
Annual Book of ASTM Standards, Vol 11.01.
6
Annual Book of ASTM Standards, Vol 15.05.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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G85–02
4.3.1 Temperature—The temperature in the exposure zone 5.2.3 Whenever it is desired to determine the development
varies with the test method used. For recommended exposure of corrosion from an abraded area in the paint or organic
zo
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