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Gas Corrosion Testing in Focus: Proficiency Testing as a Basis for Reliable Results
The quality and comparability of test results are essential prerequisites for generating reliable conclusions in environmental simulation. This is particularly true for gas corrosion testing, where materials and electronic components are exposed to corrosive atmospheres. In this context, the reproducibility of results is of critical importance.
Against this background, RST initiated and organized its own proficiency test (interlaboratory comparison). The objective was to systematically assess the performance of testing laboratories in the field of gas corrosion testing while also improving the comparability of results. Participation in such comparisons is also required under DIN EN ISO 17025 to ensure the quality and competence of testing laboratories.
As there has been no official provider of proficiency testing in the field of gas corrosion testing to date, RST independently designed and conducted this interlaboratory comparison. A total of 12 testing laboratories participated. Together with a newly established working group, the aim was to validate the corrosivity and reproducibility of test environments in accordance with DIN EN 60068-2-60.
Test Setup and Methodology
The proficiency test was based on the flowing mixed gas corrosion test according to DIN EN 60068-2-60:2016-06 (test method Ke). This method is used to evaluate the effects of corrosive gases on materials and components under defined conditions.
To assess the corrosivity of the respective test atmospheres, standardized corrosion indicators were used. OFHC copper coupons in accordance with ISO 431 served as reference materials, enabling a consistent and reproducible evaluation of corrosion effects. By comparing the results from the participating laboratories, conclusions could be drawn regarding measurement accuracy, process stability, and the comparability of testing conditions.
This interlaboratory comparison therefore makes a significant contribution to quality assurance in gas corrosion testing and supports laboratories in further optimizing their testing processes and reliably meeting accreditation requirements.
From Comparability to Application: Testing LED Light Strips for Railway Use
The findings from the proficiency test are directly applied in practical testing scenarios. A current example is the evaluation of LED light strips for railway applications manufactured by TSL-ESCHA GmbH.
As part of a gas corrosion test in accordance with DIN EN 60068-2-60, the LED strips are exposed to a defined corrosive gas atmosphere in a controlled test chamber. The objective is to analyze product behavior under realistic environmental conditions and to identify potential weaknesses at an early stage.
The focus of the investigation includes:
- resistance of materials to corrosive influences
- behavior of solder joints and electrical contacts
- reliability of electronic assemblies under demanding environmental conditions
Such environmental simulation tests are a key element of quality assurance. They make it possible to detect potential failure mechanisms early and to further develop products in a targeted manner. Particularly in railway applications, where components are exposed to harsh environmental conditions over long periods, the reliability of systems is crucial.
Conclusion
By initiating this proficiency test in the field of gas corrosion testing, RST makes an important contribution to ensuring quality and comparability in testing technology. At the same time, the current practical example demonstrates how this foundational work is directly transferred into real-world applications supporting the development of robust and reliable products.