GMW14872 PDF

1 Sep Materials. GMW Cyclic Corrosion Laboratory Test. 1 Scope. Note: Nothing in this standard supercedes applicable laws and regulations. 13 Aug November Page 7 of Table A1: GMW Mass Loss Targets ( mm thick coupons) – Cosmetic and Functional. Test Exposure. Assured Testing Services provides cyclic corrosion testing using automated chambers, automotive and other specifications including GMW, SAE J .

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The test length is variable dependant on the number of cycles within the total test duration.

Please note The test standard summaries are for general guidance only. In this context they can be considered to be equivalent and interchangeable terms.

Twenty established corrosion test procedures were included within the study. Introduction In the American Iron and Steel Institute, in conjunction with a Committee of the SAE, conducted a study of existing cyclic corrosion tests in order to establish the best methods of predicting the performance of materials used in automotive applications.

Additionally the US military regularly gmw148772 the standard to predict life of a variety of coatings and materials on tactical vehicles.

Their ability to replicate the rank order of coatings performance in the real World. So this information should not be used as a substitute for referring to a complete test standard, at an appropriate revision level.

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Cyclic Corrosion Testing GMW, SAEJ Assured Testing Services

Contact Ascott for Further Information. In the American Iron and Steel Institute, in conjunction with a Committee of the SAE, conducted a study of existing cyclic corrosion tests in order to establish the best methods of predicting the performance of materials used in automotive applications.

Typical Application Through analysis of historic data it has been determined that the GMW test process very closely predicts the corrosion rates for steel gmw4872 zinc materials exposed to periodic de-icing salts, for this reason the standard has become very popular within the automotive industry. An accelerated laboratory corrosion test to evaluate automotive coatings and components.

Specimens being tested are exposed to a multi-stage changing environment that is composed of three distinctive cycles, these stages can be varied depending on the nature of the specimen undertaking the test, for further information please refer to the full GMW standard. A minimum of 1 hour spacing between the end of a previous salt application and the following salt application is required. Method Specimens being tested are exposed to a multi-stage changing environment that is composed of three distinctive cycles, these stages can be varied depending on the nature of the specimen undertaking the test, for further information please refer to the full GMW standard.

Though believed to be accurate at the time of writing, this may change over time. Website design by Peter Bourne Communications. Both are gmw14827 browsers. This is considered an out of date browser.

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GMW | Standards | Ascott Analytical

During this period salt solution is sprayed directly on to the test samples 4 times, for long enough to thoroughly wet them. This website has been developed with modern browsers in mind to allow it to display at its best in a wide variety of viewing situations – including mobile viewing. Through analysis of historic data it has been determined that the GMW test process very closely predicts the corrosion rates for steel and zinc materials exposed to periodic de-icing salts, for this reason the standard has become very popular within the automotive industry.

The procedures were judged on: You need to upgrade your browser You are using Internet Explorer 8 This is considered an out of date browser.

But we haven’t supported older browsers gmw4872 IE8. The process itself comprised of undertaking tests on 10 different materials with each procedure, the results were compared to results gathered through real World exposure from 10 locations bmw14872 the globe, undertaking the tests with identical materials.