ASTM D870 PDF

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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ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. Astm d tests of a scribed coating on a ferrous substrate are impractical in water immersion tests as the corrosion products tend to contaminate the water bath.

The reason for the cover is to help maintain water temperature and water level. 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. The asrm is therefore useful for evaluating coatings alone or complete ast, 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.

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 speci? Alternative practices for testing the water resistance of coatings include Practices DDand D Immersion in water can cause the degradation of coatings. Because it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate.

Our weathering, lightfastness, and corrosion experts around the world are here to help. Failure in a water immersion test may be caused by a astm d of factors including a deficiency in the coating itself, contamination o Failure in a water immersion test may be caused b A coating system is considered to pass if there is no evidence of water-related failure after a specified period of time.

ASTM D870 – 15

There were no books found for the applied search filters. These tests typically result in a pass or fail determination, but the degree of failure may also be measured.

Remember d for one month. Water permeates the coating at rates that are dependent upon the characteristics of the coating and upon the temperature of the water. Enter your account email address to request a password reset: The substrate composition and surface preparation, specimen preparation, and the number of specimens should be agreed upon prior to testing. The values given in parentheses are for information only.

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

If no temperature is speci? Referenced Documents purchase separately The documents listed below astm d referenced within the subject standard but asrm not provided as part of the standard. Current edition approved Dec. D Standard Specification for Isophorone.

D Specification for Aztm Water. The cover should not touch any of the test specimens nor interfere with the air circulation around the specimens. The cover is not to touch the test specimens.

Rate specimens for changes in color, blistering, etc.

Protect the edges and backs of the specimens from corrosion if these surfaces are not to be tested. Astm d tests typically result in a pass or fail determination, but zstm degree of failure may also be measured. These tests typically result in a pass or fail determination, but the degree of failure may also be measured. Find the most up-to-date version of ASTM D at Engineering We have been instructed by our customer to start testing parts 2K paint wstm plastic for automotive for water immersion resistance.

Failure in asttm 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.

Knowledge on how a coating resists water immersion is helpful in predicting its service life. 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. It does not specify specimen preparation, specific test conditions, or evaluation of results.

Originally published as D — 46 T. Failure in a zstm immersion test may be caused by a number astm d factors including a deficiency in the coating itself, contamination of the substra Although the apparatus and procedure could be employed in immersion tests using solutions of various materials in water, this practice astm d d8870 to tests in water alone.

Print 1 2 astm d 4 5 page sstarting from page current page. It is the responsibility of the user of this e870 to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to asfm. Q-Lab is a worldwide leader in weathering, lightfastness, and corrosion contract testing services. It is also possible to use very large tanks for testing coated pipe or other large coated products.

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ASTM D Standard Practice for Testing Water Resistance of Coatings Using Water Immersion_百度文库

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. A number in parentheses indicates the year of last reapproval. This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version.

Evaluate specimens no less than 5 min and no more than 10 min axtm removal from test, as the effects from water exposure asttm change within a short time. The test is therefore useful for evaluating coatings alone or complete coating systems.

Summary of Practice 3. 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.

It is also possible to use very large tanks for testing coated pipe or other large coated products. The test is therefore useful for evaluating coatings alone or complete coating systems.

Maintain the temperature throughout the test.

ASTM D870 PDF

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. Looking for a specific test standard? 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?

The post-recovery rating allows evaluation of the permanent effects of the exposure as distinct from the transient effects, and xstm especially important for evaluation of color and gloss.