Find the most up-to-date version of ASTM D at Engineering Dpdf – Download as PDF File .pdf), Text File .txt) or read online. ASTM Standards: the coating and upon the temperature of the water. Any effects. failure in hours shall be recorded. ASTM D describes this test method for accelerated testing of coating adhesive bonds. Interior Adhesion. A 6″ conduit test.

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Search book title Enter keywords for book title search. Immersion in water can cause the degradation of coatings. The apparatus for the test is relatively inexpensive and can be as simple astn a glass beaker with a stirrer.

It is also possible to use very large tanks for testing coated pipe or other large coated products.

Any effects such as color change, blistering, loss of adhesion, softening, or embrittlement are observed and reported. Q-Lab is a worldwide leader in weathering, lightfastness, and corrosion contract testing services.

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ASTM D870 PDF

Continuous overflow of the test tank is d80 required to maintain consistent water quality. Failure in a water immersion test may be caused by a number of factors including a de?

Originally published as D — 46 T. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. D Standard Specification for Isophorone.

It does not specify specimen preparation, specific test conditions, or evaluation of results. Note atm practices for testing the water resistance of coatings include Practices DDand D It does not asm specimen astm d, specific test conditions, or evaluation of results.

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ASTM D870 – 15

A recovery period from 12 to 24 h is generally sufficient. Knowledge on how a coating resists water immersion is helpful in predicting its service life.

Referenced Documents purchase separately The documents listed below are referenced within astm d subject standard but are not provided as part of the standard. Test Standards for the QCT Condensation Tester ASTM D Standard Practice for Testing Water Resistance of Dd Using Water Immersion This practice covers the basic principles and operating procedures for testing water resistance of coatings by the partial or complete immersion of coated specimens in distilled or de-mineralized water at ambient or elevated temperatures.

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Referenced Documents purchase separately The documents listed below astm d referenced within the subject standard but asrm not provided as part of the standard. Failure in a water immersion test may be caused by a number of factors including a deficiency in the coating itself, contamination of the substrate, or inadequate surface preparation. If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below.

Because it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Although the apparatus and procedure could be employed in immersion tests using solutions of various materials in water, this practice is limited to tests in water alone.

Results obtained from water immersion tests in accordance with this practice should not be represented as being equivalent to a period of exposure to water in the natural environment, until the degree of quantitative correlation has been established for the coating or coating system. It does not specify specimen preparation, speci? NOTE 2—The circulating system is for the purpose of exposing all the water in the tank to room air so the water does not become strati?

It is also possible to use very large tanks for testing coated pipe or other large coated products. Continuous overflow of the test tank is sometimes required astm d maintain consistent water quality. A coating system is considered to pass if there is no evidence of water-related failure after a specified period of time. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.

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A coating system is considered to pass if there is no evidence of water-related failure after a speci? The test is therefore useful for evaluating coatings alone or complete coating systems. Although the apparatus and procedure could be employed in immersion tests using solutions of various materials in water, this practice is limited to tests in water alone.

Maintain the temperature throughout the test. These tests typically result in a pass or fail determination, but the degree of failure may also be measured.

ASTM D – 15 Standard Practice for Testing Water Resistance of Coatings Using Water Immersion

The post-recovery rating allows evaluation of the permanent effects of the exposure as distinct from the transient effects, and asm especially important for evaluation of color and gloss. Continuous replacement of the water is permitted.

Results obtained from water immersion tests in accordance with this practice should not be represented as being equivalent to a period of exposure ast, water in the natural environment, until astm d degree of quantitative correlation has been established for astm d coating or coating system. The cover should not touch any of the test specimens nor interfere with the air circulation around the specimens.

Failure in a water immersion test zstm be caused by a number of sstm including a deficiency astm d the coating itself, contamination of the substrate, or inadequate surface preparation. Summary of Practice 3. The substrate composition and surface preparation, specimen preparation, and the number of specimens should be agreed upon prior to testing.

The test is therefore useful for evaluating coatings alone or complete coating systems. Print 1 2 astm d 4 5 page sstarting from page current page.