ASTM B556 - 90(2018) - Standard Guide for Measurement of Thin Chromium Coatings by Spot Test

ASTM B556 - 90(2018)

Standard Guide for Measurement of Thin Chromium Coatings by Spot Test

Status : Current   Published : August 2018

Format
PDF

Format
HARDCOPY



1.1 This 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.

1.2  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.

1.3  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.




Standard NumberASTM B556 - 90(2018)
TitleStandard Guide for Measurement of Thin Chromium Coatings by Spot Test
StatusCurrent
Publication Date01 August 2018
Normative References(Required to achieve compliance to this standard)No other standards are normatively referenced
Informative References(Provided for Information)No other standards are informatively referenced
Descriptors Cleaning, Electrodeposition, Electrolytic Process, Electroplating, Nickel, Nickel Alloys
ICS25.220.40
PublisherASTM
FormatA4
DeliveryYes
Pages3
File Size93 KB
Price£36.00


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