ASTM B767-88(2021)
Standard Guide for Determining Mass Per Unit Area of Electrodeposited and Related Coatings by Gravimetric and Other Chemical Analysis Procedures

Standard No.

ASTM B767-88(2021)

Release Date

2021

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM B767-88(2021)

Scope

1.1 This guide outlines a general method for determining the mass per unit area of electrodeposited, electroless, mechanically-deposited, vacuum-deposited, anodicoxide, and chemical conversion coatings by gravimetric and other chemical analysis procedures. 1.2 This guide determines the average mass per unit area over a measured area. 1.3 The stripping methods cited are described in specifications or in the open literature or have been used routinely by at least one laboratory. 1.4 The procedures outlined can be used for many coatingsubstrate combinations. They cannot be used where the coating cannot be separated from the substrate by chemical or physical means as would be the case if white brass were plated with yellow brass. 1.5 In principle, these procedures can be used to measure very thin coatings or to measure coatings over small areas, but not thin coatings over small areas. The limits depend on the required accuracy. For example, 2.5 mg ⁄cm2 of coating might require 2.5 mg of coating covering 1 cm2 , but 0.1 mg ⁄cm2 of coating would require 25 cm2 to obtain 2.5 mg of coating. 1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.7 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. 1.8 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.

ASTM B767-88(2021) Referenced Document

• ASTM A309 Standard Test Method for Weight and Composition of Coating on Terne Sheet by the Triple-Spot Test
• ASTM A428/A428M Standard Test Method for Weight [Mass] of Coating on Aluminum-Coated Iron or Steel Articles
• ASTM A90/A90M Standard Test Method for Weight [Mass] of Coating on Iron and Steel Articles with Zinc or Zinc-Alloy Coatings
• ASTM B137 Standard Test Method for Measurement of Coating Mass Per Unit Area on Anodically Coated Aluminum*， 2024-04-20 Update
• ASTM B449 Standard Specification for Chromates on Aluminum*， 2022-10-01 Update
• ISO 2081 Metallic and other inorganic coatings - Electroplated coatings of zinc with supplementary treatments on iron or steel
• ISO 2082 Metallic and other inorganic coatings — Electroplated coatings of cadmium with supplementary treatments on iron or steel
• ISO 2093 Electroplated coatings of tin; Specification and test methods
• ISO 2106 Footwear — Chemical tests — General principles on the preparation of samples
• ISO 3892 Conversion coatings on metallic materials - Determination of coating mass per unit area - Gravimetric methods
• ISO 4522-1 Metallic coatings; Test methods for electrodeposited silver and silver alloy coatings; Part 1: Determination of coating thickness
• ISO 4524-1 Metallic coatings; Test methods for electrodeposited gold and gold alloy coatings; Part 1 : Determination of coating thickness

ASTM B767-88(2021) history

• 2021 ASTM B767-88(2021) Standard Guide for Determining Mass Per Unit Area of Electrodeposited and Related Coatings by Gravimetric and Other Chemical Analysis Procedures
• 1988 ASTM B767-88(2016) Standard Guide for Determining Mass Per Unit Area of Electrodeposited and Related Coatings by Gravimetric and Other Chemical Analysis Procedures
• 1988 ASTM B767-88(2010) Standard Guide for Determining Mass Per Unit Area of Electrodeposited and Related Coatings by Gravimetric and Other Chemical Analysis Procedures
• 1988 ASTM B767-88(2006) Standard Guide for Determining Mass Per Unit Area of Electrodeposited and Related Coatings by Gravimetric and Other Chemical Analysis Procedures
• 1988 ASTM B767-88(2001) Standard Guide for Determining Mass Per Unit Area of Electrodeposited and Related Coatings by Gravimetric and Other Chemical Analysis Procedures
• 1988 ASTM B767-88(1994) Standard Guide for Determining Mass Per Unit Area of Electrodeposited and Related Coatings by Gravimetric and Other Chemical Analysis Procedures