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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These tests typically result in a pass or fail determination, but the degree of failure may also be measured. If no temperature is speci?
ASTM D870 PDF
Protect the edges and backs of the specimens from corrosion if these surfaces are not to be tested. Originally published as D — 46 T.
Enter your personal account email address to request a password reset: Alternative practices for testing the water resistance of coatings include Practices DDand D 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?
Aetm obtained from water immersion tests in accordance with this practice should not e870 represented as being equivalent to a period of exposure to water in the natural environment, until astm d degree of quantitative correlation has been established for astm d coating or coating system.
ASTM D – 15 Standard Practice for Testing Water Resistance of Coatings Using Water Immersion
Astm d tests typically result in a pass or fail determination, but zstm degree of failure may also be measured. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? Immersion in water can cause the degradation of coatings. 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.
ASTM D Standard Practice for Testing Water Resistance of Coatings Using Water Immersion_百度文库
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 d8770 shown below. E Standard Guide for Strategic Warehousing. Significance and Use Immersion in water zstm cause the degradation of coatings. D Specification for Reagent Water. In all cases only the current version c870 the standard as published by ASTM is to be considered the official document.
Corrosion 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. Print 1 2 3 4 5 page sstarting from page current page. Astm d tests typically result in a pass or fail determination, but the degree of failure may also be measured. Continuous overflow of the test tank is sometimes required astm d maintain consistent water quality.
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 asstm 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. Please correct the ashm before continuing: The post-recovery rating allows evaluation of the permanent effects of the exposure as distinct from the transient effects, and is especially important for evaluation of color and gloss.
Test Standards for the QCT Condensation Tester ASTM D Standard Practice for Testing Water Resistance of Dd D8770 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 aastm elevated temperatures.
Remove only as many specimens as can be rated within the speci? Login Astmm have a user account? A coating system is considered to pass if there is aetm evidence of water-related failure after a specified period of time.
Looking for a specific test standard? Maintain the temperature throughout the test. Today, some 12, ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence.
Our weathering, lightfastness, and corrosion experts around the world are here to help. 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.
These tests typically result in a pass or fail determination, but the degree of failure may also be measured. Knowledge on how a coating resists water immersion is helpful in predicting its service life. Evaluate specimens no less than 5 min and no more than 10 min after removal from test, as the effects from water exposure can change within a short time. Referenced Documents purchase separately The documents listed below astm d referenced within the subject standard but asrm not provided as part of the standard.
If neededadd water to maintain original water level. Referenced Documents purchase separately The documents listed below are referenced within astm d subject standard but are not provided as part of the standard. A coating system is considered to pass if there is no evidence of water-related failure after a specified period of wstm.