ASTM B 556 : 1990 : R2018
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Standard Guide for Measurement of Thin Chromium Coatings by Spot Test
Hardcopy , PDF
11-09-2023
English
08-22-2018
Important note : All end users must be registered with an Account prior to user licenses being assigned.CONTAINED IN VOL. 02.05, 2017 Defines the use of the spot test for the measurement of thicknesses of electrodeposited chromium coatings over nickel and stainless steel with an accuracy of about +/- 20%.
| Committee |
B 08
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| DocumentType |
Guide
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| Pages |
3
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| PublisherName |
American Society for Testing and Materials
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| Status |
Superseded
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| SupersededBy | |
| Supersedes |
1.1This guide covers the use of the spot test for the measurement of thicknesses of electrodeposited chromium coatings over nickel and stainless steel with an accuracy of about ±20 % (Section 9). It is applicable to thicknesses up to 1.2 μm.2
Note 1:Although this test can be used for coating thicknesses up to 1.2 μm, there is evidence that the results obtained by this method are high at thicknesses greater than 0.5 μm.3 In addition, for coating thicknesses above 0.5 μm, it is advisable to use a double drop of acid to prevent depletion of the test solution before completion of the test.
1.2This 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.
1.3This 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 B 604 : 1991 : R1997 | Standard Specification for Decorative Electroplated Coatings of Copper Plus Nickel Plus Chromium on Plastics |
| ASTM B 604 : 1991 : R2008 | Standard Specification for Decorative Electroplated Coatings of Copper Plus Nickel Plus Chromium on Plastics |
| ASTM B 604 : 1991 | SPECIFICATION FOR DECORATIVE ELECTROPLATED COATINGS OF COPPER PLUS NICKEL PLUS CHROMIUM ON PLASTICS |
| SAE J1837_201712 | ELECTROPLATE REQUIREMENTS FOR DECORATIVE CHROMIUM DEPOSITS ON ZINC BASE MATERIALS USED FOR EXTERIOR ORNAMENTATION |
| SAE AMS 2460 : 2013 | PLATING, CHROMIUM |
| ASTM B 568 : 1998 : R2014 | Standard Test Method for Measurement of Coating Thickness by X-Ray Spectrometry |
| ASTM B 568 : 1998 : R2021 | Standard Test Method for Measurement of Coating Thickness by X-Ray Spectrometry |
| ASTM B 504 : 1990 : R2017 | Standard Test Method for Measurement of Thickness of Metallic Coatings by the Coulometric Method |
| ASTM B 504 : 1990 : R2023 | Standard Test Method for Measurement of Thickness of Metallic Coatings by the Coulometric Method |
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