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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Their ability to replicate the rank order of coatings performance in the real World. Please note The test standard summaries are for general guidance only. 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.

Cyclic Corrosion Testing GMW, SAEJ Assured Testing Services

Additionally the US military regularly uses the standard to predict life of a variety of coatings and materials on tactical vehicles. So this information should not be used as a substitute for referring to a complete test standard, at an appropriate revision level.

During this period salt solution is sprayed directly on to the test samples 4 times, for long enough to thoroughly wet them. gmw148772

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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.

But we haven’t supported older browsers like IE8. This website has been developed with modern browsers in mind to allow it to display at its best in gw14872 wide variety of viewing situations – including mobile viewing. Contact Ascott for Further Information.

A minimum of 1 hour spacing between the end of a previous salt application and the following salt application is required. In the American Iron and Steel Institute, in conjunction with a Committee of the SAE, conducted a study of existing cyclic corrosion ymw14872 in order to establish the best methods of predicting the performance of materials used in automotive applications. You need to upgrade your browser You are using Internet Explorer 8 This is considered an out of date browser.

An gkw14872 laboratory corrosion test to evaluate automotive coatings and components. Twenty established corrosion test procedures were included within the study.

GMW | Standards | Ascott Analytical

In this context they can be considered to be equivalent and interchangeable terms. The procedures were judged on: Both are excellent browsers.

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.

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This ymw14872 considered an out of date browser. 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.

The process itself comprised of undertaking tests on 10 different materials with each procedure, the results vmw14872 compared to results gathered through real World exposure from 10 locations around the globe, undertaking the gmw14782 with identical materials.

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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 gmw144872 best methods of predicting the performance of materials used in automotive applications. Though believed to be accurate at the time of writing, this may change over time. The test length is variable dependant on the number of cycles within the total test duration.

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