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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Please note The test standard summaries are for general guidance only. 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.

In the American Iron and Steel Institute, in conjunction with a Gme14872 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.

Website design by Peter Bourne Communications. Twenty established corrosion test procedures were included within the study.

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Though believed to be accurate at the time of writing, this may change over time. 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 gnw14872 nature of the specimen undertaking the test, for further information please refer to the full GMW standard.

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But we haven’t supported older browsers like IE8. An accelerated laboratory corrosion test to evaluate automotive coatings and components. You need to upgrade your browser You are using Internet Explorer 8 This is considered an out of date browser.

Typical Application 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 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 around the globe, undertaking the tests with identical materials.

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.

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. Contact Ascott gm14872 Further Information. During this period salt solution is sprayed directly on to the test samples 4 times, for long enough to thoroughly wet them.

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The test length is variable dependant on the number of cycles within the total test duration. A minimum of 1 hour spacing between the end of a previous salt application and the following salt application is required.

This is considered an out of date browser. The procedures were judged on: Both are excellent browsers. Additionally the US military regularly uses the standard to predict life of a variety of coatings and materials on tactical vehicles.

GMW Cyclic Corrosion Assured Testing Services

So this gmq14872 should not be used as a substitute for referring to a complete test standard, at an appropriate revision level. Their ability to replicate the rank order of coatings performance in the real World. 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.

In this context they can be considered to be equivalent and interchangeable terms.