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A number in parentheses indicates the year of last reapproval. The values given in parentheses are for informationonly. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use. Referenced Documents2. Summary of Test Method3.
Adhesion is evaluated qualitatively ona0to10scale. Significance and Use4. This test method has beenfound useful as a simple means of assessing the adhesion ofcoatings. Although this method is a qualitative and a subjectivetest it has been used in industry for many years and can providevaluable information. See D, D, D, and D Apparatus and Materials5.
Test Specimen6. NOTE 2—If desired or specified, the coated test panels may be subjectedto a preliminary exposure such as water immersion, salt spray, or highhumidity before conducting the knife adhesion test. Current edition approved Nov. Published November Originallyapproved in Last previous edition approved in as D — Disregard coating removed during cutting process. Rate according to Table 1.
For large structures make sufficient tests to ensure that theadhesion evaluation is representative of the whole surface. Precision and Bias9. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn.
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A number in parentheses indicates the year of last reapproval. A superscript epsilon e indicates an editorial change since the last revision or reapproval. Scope 1. The values given in parentheses are for information only. It is the responsibility of the user of this standard to establish appro- priate safety and health practices and determine the applica- bility of regulatory limitations prior to use.
ASTM D6677 PDF
ASTM D6677 Standard Test Method for Evaluating Adhesion by Knife