ASTM B380-97(2018)

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.

General Information

• Status: Historical
• Publication Date: 31-Jul-2018
• ICS: 25.220.40 - Metallic coatings
• ICS: 77.060 - Corrosion of metals
• Technical Committee: B08 - Metallic and Inorganic Coatings
• Drafting Committee: B08.10 - Test Methods

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: B380 − 97 (Reapproved 2018)
Standard Test Method for
Corrosion Testing of Decorative Electrodeposited Coatings
1
by the Corrodkote Procedure
This standard is issued under the fixed designation B380; 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.
1. Scope B537 Practice for Rating of Electroplated Panels Subjected
2 to Atmospheric Exposure
1.1 This test method covers the Corrodkote method of
B602 Test Method for Attribute Sampling of Metallic and
evaluating the corrosion performance of copper/nickel/
Inorganic Coatings
chromium and nickel/chromium coatings electrodeposited on
B604 Specification for Decorative Electroplated Coatings of
steel, zinc alloys, aluminum alloys, plastics and other sub-
Copper Plus Nickel Plus Chromium on Plastics
strates.
D1193 Specification for Reagent Water
NOTE 1—The following ASTM standards are not requirements. They
are reference for information only: Practice B537, Specification B456,
3. Summary of Test Method
Test Method B602, and Specification B604.
3.1 The test is conducted by applying a slurry containing
1.2 The values stated in SI units are to be regarded as
corrosive salts to test specimens, allowing the slurry to dry, and
standard. No other units of measurement are included in this
exposing the specimens coated with the slurry to a high relative
standard.
humidity for a specified period of time.
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the 4. Significance and Use
responsibility of the user of this standard to establish appro-
4.1 Nickel/chromium and copper/nickel/chromium elec-
priate safety, health, and environmental practices and deter-
trodeposited coatings are widely used for decorative and
mine the applicability of regulatory limitations prior to use.
protective applications. The Corrodkote test provides a method
1.4 This international standard was developed in accor-
of controlling the quality of electroplated articles and is
dance with internationally recognized principles on standard-
suitable for manufacturing control, as well as research and
ization established in the Decision on Principles for the
development.
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
5. Apparatus
Barriers to Trade (TBT) Committee.
5.1 The apparatus shall consist of a humidity chamber,
specimen supports, provision for heating the chamber, and
2. Referenced Documents
provisions for air circulation in the chamber.
3
2.1 ASTM Standards:
5.2 Drops of moisture that might accumulate on the ceiling
B117 Practice for Operating Salt Spray (Fog) Apparatus
or cover of the chamber of specimen supports shall not be
B456 Specification for Electrodeposited Coatings of Copper
permitted to fall on the specimens being tested.
Plus Nickel Plus Chromium and Nickel Plus Chromium
NOTE 2—Suitable apparatus may be constructed from salt-spray equip-
ment by eliminating fog-spray nozzles, substituting water for the salt
1
This test method is under the jurisdiction of ASTM Committee B08 on Metallic
solution in the reservoir, adding a manifold for bubbling air through the
and Inorganic Coatings and is the direct responsibility of Subcommittee B08.10 on
water in the reservoir, and adding a fan for circulating the air in the
Test Methods.
chamber with the fan discharge directed across the surface of the water in
The original work in developing the Corrodkote procedure was initiated by the
the reservoir.
American Electroplaters’ Society Research Committee, Project No. 15.
Current edition approved Aug. 1, 2018. Published August 2018. Originally
5.3 Materials of construction shall not affect the corrosive-
approved in 1961. Last previous edition approved in 2008 as B380 – 97(2013). DOI:
ness of the test.
10.1520/B0380-97R18.
2
Bigge, D. M., “Experience with the Use of the Corrodkote Test,” Proceedings,
6. Procedure
Am. Electroplaters’ Soc., Vol. 46, 1959, p. 149.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
6.1 Corrodkote Slurry—Prepare the Corrodkote slurry in a
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
glass beaker by dissolving 0.035 g of reagent grade cupric
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. nitrate (Cu(NO ) ·3H O), 0.165 g of ACS reagent grade ferric
3 2 2
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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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: B380 − 97 (Reapproved 2013) B380 − 97 (Reapproved 2018)
Standard Test Method for
Corrosion Testing of Decorative Electrodeposited Coatings
1
by the Corrodkote Procedure
This standard is issued under the fixed designation B380; 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.
1. Scope
2
1.1 This test method covers the Corrodkote 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 safety, health, and healthenvironmental 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.
2. Referenced Documents
3
2.1 ASTM Standards:
B117 Practice for Operating Salt Spray (Fog) Apparatus
B456 Specification for Electrodeposited Coatings of Copper Plus Nickel Plus Chromium and Nickel Plus Chromium
B537 Practice for Rating of Electroplated Panels Subjected to Atmospheric Exposure
B602 Test Method for Attribute Sampling of Metallic and Inorganic Coatings
B604 Specification for Decorative Electroplated Coatings of Copper Plus Nickel Plus Chromium on Plastics
D1193 Specification for Reagent Water
3. Summary of Test Method
3.1 The test is conducted by applying a slurry containing corrosive salts to test specimens, allowing the slurry to dry, and
exposing the specimens coated with the slurry to a high relative humidity for a specified period of time.
4. 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.
5. Apparatus
5.1 The apparatus shall consist of a humidity chamber, specimen supports, provision for heating the chamber, and provisions
for air circulation in the chamber.
1
This test method is under the jurisdiction of ASTM Committee B08 on Metallic and Inorganic Coatings and is the direct responsibility of Subcommittee B08.10 on Test
Methods.
The original work in developing the Corrodkote procedure was initiated by the American Electroplaters’ Society Research Committee, Project No. 15.
Current edition approved Dec. 1, 2013Aug. 1, 2018. Published December 2013August 2018. Originally approved in 1961. Last previous edition approved in 2008 as
ε1
B380 – 97(2008)(2013). . DOI: 10.1520/B0380-97R13.10.1520/B0380-97R18.
2
Bigge, D. M., “Experience with the Use of the Corrodkote Test,” Proceedings, Am. Electroplaters’ Soc., Vol. 46, 1959, p. 149.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
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 ----------------------
B380 − 97 (2018)
5.2 Drops of moisture that might accumulate on the ceiling or cover of the chamber of specimen supports shall not be permitted
to fall on the specimens being tested.
NOTE 2—Suitable apparatus may be constructed from salt-spray equipment by eliminating fog-spray nozzles, substituting water for the salt solution
in the reservoir, adding a manifold for bubbling air through the water in the reservoir, and adding a fan for circulating the air in th
...