Solution: Exposure tests
Solution: Exposure tests
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Exposure tests
About Exposure Testing
Corrosion tests are often performed in the context of material selection for metals/alloys, quality control (e.g., Streicher or Huey tests), product classification (e.g., ADR/CLP Directive), etc. Corrosion tests and analyses are also performed if there is uncertainty regarding the corrosion risk of a specific material/medium combination, following a study based on literature data and expert opinion
Parameters for exposure tests:
In a corrosion test or exposure test, coupons (test plates) of the material under investigation (metal, plastic, coating) are exposed to either process conditions or standardized conditions. The exposure period typically ranges from a few weeks to several months. Depending on the research question, the actual conditions are approximated as closely as possible, worst-case conditions are imposed, or the materials are exposed to standardized conditions to qualify their use for a specific application.
Some of the parameters that must be considered in exposure tests are:
- Material (surface condition, presence of a weld, …)
- Medium
- Phase (liquid, interfacial, gas)
- Aeration
- Temperature / pressure
- Agitation (motion, flow)
Wide range of testing capabilities and standards
We have a well-equipped laboratory where, in addition to standard exposure tests, simulations and pilot-scale tests are developed and conducted specifically tailored to the customer’s needs. Below is a selection of the exposure tests and associated standards that can be performed in the laboratory. However, this list is not exhaustive.
Examples of tests and relevant standards
- Exposure tests to determine degradation phenomena and (local) corrosion rates in liquid phase/interphase/gas phase – ASTM G1, ASTM G31
- Pitting corrosion testing – ASTM G48-A, ASTM G48-E
- Crevice corrosion testing – ASTM G78, ASTM G48-B
- Stress corrosion testing (including the ‘drop evaporation test (DET)’)
- Galvanic (contact) corrosion testing
- Atmospheric corrosion testing (using salt spray tests, cyclic corrosion tests, condensation chambers, climate chambers) – ISO 9227, ASTM B117, Kesternich test, …
- Tests for evaluating corrosion under insulation (CUI) – ASTM G189, ASTM C795, ASTM C1617
- Testing in accordance with ADR regulations (CLP guidelines, section 37.4.3)
- Quality tests such as Huey, Streicher, and Strauss tests – ASTM A262, ASTM G28, ISO 3651
- Tests for evaluating corrosion inhibitors
- Cyclic polarization tests and electrochemical impedance spectroscopy (EIS)
Can’t find what you’re looking for?
If the test or standard you need isn’t listed here, please feel free to contact us. We’d be happy to review your specific situation and explore the options we can offer.
From test results to actionable insights
Exposure tests provide valuable insights into:
- Corrosion mechanisms
- Material performance
- Expected service life
- Operational risks
TÜV AUSTRIA Belgium not only assists with conducting tests but also with interpreting results and formulating practical recommendations for material selection, design, and maintenance strategies.
Contact
Would you like to set up a customized exposure test program or do you need technical advice?
Please contact us to discuss your specific needs.
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