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ASTM B368-09

(Test Method)

Standard Test Method for Copper-Accelerated Acetic Acid-Salt Spray (Fog) Testing (CASS Test)

Standard Test Method for Copper-Accelerated Acetic Acid-Salt Spray (Fog) Testing (CASS Test)

SIGNIFICANCE AND USE
The CASS test is widely employed and is useful for specification acceptance, simulated service evaluation, manufacturing control, and research and development. It was developed specifically for use with decorative, electrodeposited nickel/chromium and copper/nickel/chromium coatings. Use of the test has improved the quality of electroplated parts and led to the development of new and superior electroplating processes.
SCOPE
1.1 This test method prescribes the conditions required in copper-accelerated acetic acid-salt spray (CASS) testing for specification purposes. The standard does not specify the type of test specimen or exposure periods to be used for a specific product, nor the interpretation to be given to the results.
1.2 This test method is applicable to evaluating the corrosive performance of decorative copper/nickel/chromium or nickel/chromium coatings on steel, zinc alloys, aluminum alloys, and plastics designed for severe service. It is also applicable to the testing of anodized aluminum. The suitability of this test and correlation of results with service experience should be determined before it is specified for coating systems or materials other than those mentioned in this paragraph.
Note 1—The following standards are not requirements. They are referenced for information only: Practices B 537 and E 50, Specifications B 456 and B 604, and Test Method B 602.  
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 establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For more specific safety precautionary information see 8.1.

General Information

Status
Historical
Publication Date
14-Apr-2009
ICS
77.060 - Corrosion of metals
Technical Committee
B08 - Metallic and Inorganic Coatings
Drafting Committee
B08.10 - Test Methods
Current Stage
Ref Project

Relations

Replaces
ASTM B368-97(2003)e1 - Standard Method for Copper-Accelerated Acetic Acid-Salt Spray (Fog) Testing (CASS Test)
Effective Date
15-Apr-2009
Referred By
ASTM B995-15a(2021) - Standard Test Method for Chloride Resistance Test for Chromium Electroplated Parts (Russian Mud Test)
Effective Date
15-Apr-2009
Referred By
ASTM B733-22 - Standard Specification for Autocatalytic (Electroless) Nickel-Phosphorus Coatings on Metal
Effective Date
15-Apr-2009
Referred By
ASTM D3794-22 - Standard Guide for Testing Coil Coatings
Effective Date
15-Apr-2009
Referred By
ASTM B456-17(2022) - Standard Specification for Electrodeposited Coatings of Copper Plus Nickel Plus<brk/> Chromium and Nickel Plus Chromium
Effective Date
15-Apr-2009
Referred By
ASTM B580-79(2019) - Standard Specification for Anodic Oxide Coatings on Aluminum
Effective Date
15-Apr-2009
Referred By
ASTM B604-91(2019) - Standard Specification for Decorative Electroplated Coatings of Copper Plus Nickel Plus Chromium on Plastics
Effective Date
15-Apr-2009
Referred By
ASTM B537-22 - Standard Practice for Rating of Electroplated Panels Subjected to<brk/> Atmospheric Exposure
Effective Date
15-Apr-2009
Referred By
ASTM B374-21 - Standard Terminology Relating to Electroplating
Effective Date
15-Apr-2009
Referred By
ASTM B117-19 - Standard Practice for Operating Salt Spray (Fog) Apparatus
Effective Date
15-Apr-2009

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ASTM B368-09 - Standard Test Method for Copper-Accelerated Acetic Acid-Salt Spray (Fog) Testing (CASS Test)ASTM B368-09 - Standard Test Method for Copper-Accelerated Acetic Acid-Salt Spray (Fog) Testing (CASS Test)
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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
Designation: B368 − 09
StandardTest Method for
Copper-Accelerated Acetic Acid-Salt Spray (Fog) Testing
1
(CASS Test)
This standard is issued under the fixed designation B368; 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 Department of Defense.
1. Scope B537 Practice for Rating of Electroplated Panels Subjected
to Atmospheric Exposure
1.1 This test method prescribes the conditions required in
B602 Test Method for Attribute Sampling of Metallic and
copper-accelerated acetic acid-salt spray (CASS) testing for
Inorganic Coatings
specification purposes. The standard does not specify the type
B604 Specification for Decorative Electroplated Coatings of
of test specimen or exposure periods to be used for a specific
Copper Plus Nickel Plus Chromium on Plastics
product, nor the interpretation to be given to the results.
D1193 Specification for Reagent Water
1.2 This test method is applicable to evaluating the corro-
E50 Practices for Apparatus, Reagents, and Safety Consid-
sive performance of decorative copper/nickel/chromium or
erations for Chemical Analysis of Metals, Ores, and
nickel/chromium coatings on steel, zinc alloys, aluminum
Related Materials
alloys, and plastics designed for severe service. It is also
E70 Test Method for pH of Aqueous Solutions With the
applicable to the testing of anodized aluminum. The suitability
Glass Electrode
of this test and correlation of results with service experience
3. Significance and Use
should be determined before it is specified for coating systems
or materials other than those mentioned in this paragraph.
3.1 The CASS test is widely employed and is useful for
specification acceptance, simulated service evaluation, manu-
NOTE 1—The following standards are not requirements. They are
referenced for information only: Practices B537 and E50, Specifications facturing control, and research and development. It was devel-
B456 and B604, and Test Method B602.
oped specifically for use with decorative, electrodeposited
1.3 This standard does not purport to address all of the nickel/chromiumandcopper/nickel/chromiumcoatings.Useof
safety concerns, if any, associated with its use. It is the the test has improved the quality of electroplated parts and led
responsibility of the user of this standard to establish appro- to the development of new and superior electroplating pro-
priate safety and health practices and determine the applica-
cesses.
bility of regulatory limitations prior to use. For more specific
4. Apparatus
safety precautionary information see 8.1.
4.1 The apparatus required for the CASS test consists of a
2. Referenced Documents
fog chamber, a salt-solution reservoir, a supply of compressed
2
air, one or more atomizing nozzles, specimen supports, provi-
2.1 ASTM Standards:
sion for heating the chamber, and necessary means of control.
B117 Practice for Operating Salt Spray (Fog) Apparatus
B162 Specification for Nickel Plate, Sheet, and Strip
4.2 The size and detailed construction of the apparatus are
B456 Specification for Electrodeposited Coatings of Copper
optional, provided the conditions meet the requirements of this
Plus Nickel Plus Chromium and Nickel Plus Chromium
test method. The construction of the apparatus is described in
the appendix of Test Method B117. For the CASS test,
however, the requirements for air pressure and temperature are
1
This test method is under the jurisdiction ofASTM Committee B08 on Metallic
typically 0.08 to 0.12 MPa and 60 to 65°C, respectively. The
and Inorganic Coatingsand is the direct responsibility of Subcommittee B08.10 on
actual air pressure will be that required to produce the proper
Test Methods.
Current edition approved April 15, 2009. Published May 2009. Originally
collection rate (see 8.3.1).
´1
approved in 1961. Last previous edition approved in 2003 as B368 – 97(2003) .
4.3 The apparatus shall be constructed so that drops of
The CASS test was developed by the initiative of the Research Board of the
American Electroplaters Society under AES Project 15. DOI: 10.1520/B0368-09.
solution that accumulate on the ceiling or cover of the chamber
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
do not fall on the specimens being tested. Drops of solution
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
that fall from the specimens shall not be returned to the
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. solution reservoir for respraying.
Copyright © ASTM International, 100 Barr
...

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.
´1
Designation:B368–97(Reapproved 2003) Designation: B 368 – 09
Standard Test Method for
Copper-Accelerated Acetic Acid-Salt Spray (Fog) Testing
1
(CASS Test)
This standard is issued under the fixed designation B 368; 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 Department of Defense.
1
´ NOTE—Sections 8.1 and 10.1.12 were editorially updated in July 2003.
1. Scope
1.1 This test method prescribes the conditions required in copper-accelerated acetic acid-salt spray (CASS) testing for
specification purposes. The standard does not specify the type of test specimen or exposure periods to be used for a specific
product, nor the interpretation to be given to the results.
1.2 This test method is applicable to evaluating the corrosive performance of decorative copper/nickel/chromium or
nickel/chromium coatings on steel, zinc alloys, aluminum alloys, and plastics designed for severe service. It is also applicable to
the testing of anodized aluminum. The suitability of this test and correlation of results with service experience should be
determined before it is specified for coating systems or materials other than those mentioned in this paragraph.
NOTE 1—The following standards are not requirements. They are referenced for information only: Practices B 537 and E 50, Specifications B 456 and
B 604, and Test Method B 602.
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 establish appropriate safety and health practices and determine the applicability of regulatory
limitations prior to use. For more specific safety precautionary information see 8.1.
2. Referenced Documents
2
2.1 ASTM Standards:
B117 Practice for Operating Salt Spray (Fog) Apparatus
B 162 Specification for Nickel Plate, Sheet, and Strip
B 456 Specification for Electrodeposited Coatings of Copper Plus Nickel Plus Chromium and Nickel Plus Chromium
B 537 Practice for Rating of Electroplated Panels Subjected to Atmospheric Exposure
B 602 Test Method for Attribute Sampling of Metallic and Inorganic Coatings
B 604 Specification for Decorative Electroplated Coatings of Copper Plus Nickel Plus Chromium on Plastics
D 1193 Specification for Reagent Water
E50 Practices for Apparatus, Reagents, and Safety Considerations for Chemical Analysis of Metals, Ores, and Related
Materials Practices for Apparatus, Reagents, and Safety Considerations for Chemical Analysis of Metals, Ores, and Related
Materials
E70 Test Method for pH of Aqueous Solutions With the Glass Electrode
3. Significance and Use
3.1 The CASS test is widely employed and is useful for specification acceptance, simulated service evaluation, manufacturing
control, and research and development. It was developed specifically for use with decorative, electrodeposited nickel/chromium
and copper/nickel/chromium coatings. Use of the test has improved the quality of electroplated parts and led to the development
of new and superior electroplating processes.
1
This test method is under the jurisdiction ofASTM Committee B08 on Metallic and Inorganic Coatings and is the direct responsibility of Subcommittee B08.10 on Test
Methods.
Current edition approved May 10, 2003. Published July 2003. Originally approved in 1961. Last previous edition approved in 1997 as B368–97.
´1
Current edition approved April 15, 2009. Published May 2009. Originally approved in 1961. Last previous edition approved in 2003 as B 368 – 97(2003) .
The CASS test was developed by the initiative of the Research Board of the American Electroplaters Society under AES Project 15.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book ofASTM Standards
, Vol 03.02.volume information, refer to the standard’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 ----------------------
B368–09
4. Apparatus
4.1 The apparatus required for the CASS test consists of a fog chamber, a salt-solution reservoir, a supply of compressed air,
one or more atomizing nozzles, specimen supports, provision
...

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ASTM
ASTM G87-02(2023)(Practice)
Standard Practice for Conducting Moist SO2 Tests

SIGNIFICANCE AND USE
3.1 Moist air containing sulfur dioxide quickly produces easily visible corrosion on many metals in a form resembling that occurring in industrial environments. It is therefore a test medium well suited to detect pores or other sources of weakness in protective coatings and deficiencies in corrosion resistance associated with unsuitable alloy composition or treatments.  
3.2 The results obtained in the test should not be regarded as a general guide to the corrosion resistance of the tested materials in all environments where these materials may be used. Performance of different materials in the test should only be taken as a general guide to the relative corrosion resistance of these materials in moist SO2 service.
SCOPE
1.1 This practice covers the apparatus and procedure to be used in conducting qualitative assessment tests in accordance with the requirements of material or product specifications by means of specimen exposure to condensed moisture containing sulfur dioxide.  
1.2 The exposure conditions may be varied to suit particular requirements and this practice includes provisions for use of different concentrations of sulfur dioxide and for tests either running continuously or in cycles of alternate exposure to the sulfur dioxide containing atmosphere and to the ambient atmosphere.  
1.3 The variant of the test to be used, the exposure period required, the type of test specimen, and the criteria of failure are not prescribed by this practice. Such details are provided in appropriate material and product purchase specifications.  
1.4 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.  
1.5 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.  For a specific warning statement, see 4.3.  
1.6 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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ASTM
ASTM B380-97(2023)(Test Method)
Standard Test Method for Corrosion Testing of Decorative Electrodeposited Coatings by the Corrodkote Procedure

SIGNIFICANCE AND USE
4.1 Nickel/chromium and copper/nickel/chromium electrodeposited coatings are widely used for decorative and protective applications. The Corrodkote test provides a method of controlling the quality of electroplated articles and is suitable for manufacturing control, as well as research and development.
SCOPE
1.1 This test method covers the Corrodkote2 method of evaluating the corrosion performance of copper/nickel/chromium and nickel/chromium coatings electrodeposited on steel, zinc alloys, aluminum alloys, plastics and other substrates.  
Note 1: The following ASTM standards are not requirements. They are reference for information only: Practice B537, Specification B456, Test Method B602, and Specification B604.  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
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 establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 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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