Exposure testing is typically performed for purposes of material selection, quality control, CLP-directive, …. In an exposure test a coupon (test plate) of the material to be examined (metal, coated metal, plastic) is exposed to standardized or non-standardized conditions. The exposure time varies between several weeks to months. Depending on the situation it can be chosen to mimic the real environmental conditions as closely as possible, to apply worst case conditions, or to apply standardized conditions to qualify the use of the material for the application. Some of the parameters that need to be considered are:

  • Material (surface condition, presence of a weld, …)
  • Medium
  • Phase (liquid, interphase, gas)
  • Aeration
  • Temperature/pressure
  • Agitation

We have a well-equipped laboratory in which all classical exposure tests can be performed as well as simulations and pilot-scale tests specifically tailored to the customer’s needs. The following are just a few of the tests and corresponding standards that can be performed in the laboratory. This list is not exhaustive.

  • Exposure tests to determine degradation phenomena and (localized) corrosion rate in liquid phase/intherphase/ gas phase – ASTM G31
  • Testing of crevice corrosion – ASTM G78
  • Testing of stress-corrosion cracking (among others ‘drop evaporation test (DET)’)
  • Testing of galvanic (contact) corrosion
  • Testing of atmospheric corrosion (by salt spray tests, cyclic corrosion tests, condensation tests, climate tests) – ISO 9227, ASTM B117, Kesternich test, …
  • Tests to evaluate corrosion under insulation (CUI) – ASTM G189, ASTM C795, ASTM C1617
  • Tests according to ADR legislation (CLP-directive)
  • Quality control tests like Huey, Streicher and Strauss tests – ASTM A262
  • Tests to evaluate corrosion inhibitors

In case the test or standard you are searching for is not in this list, please contact us so we can inform you about the possibility to perform this test.

Climate tests

METALogic offers a lot of possibilities to test the effects of climate and light on the behaviour of coatings (and metals). By variation in temperature and %RH, by simulating the effects of acid rain [...]

(Cyclic) salt spray tests

Traditionally coatings are tested by subjecting them to an aggressive environment. This is for example the case in the neutral salt spray test (ISO 9227 NSS or ASTM B117). In this test coatings are exposed [...]

Tests according to CLP-directive (ADR)

The CLP-directive for classification, labeling and packaging of substances and mixtures describes corrosion tests that need to be performed to determine if a substance or mixture is corrosive to metals [...]

Delivery and evaluation of corrosion coupons

The evaluation of metal coupons (corrosion coupons or test plates) or objects after exposure typically includes determination of the (uniform/localized) corrosion rate, corrosion mechanism, analysis of [...]

Huey, Streicher and Strauss tests

The tests according to standard ASTM A262, Practice B (Streicher), Practice C (Huey) or Practice E (Strauss) are intercrystalline corrosion tests to check heat treatment of alloys. The Streicher test (ASTM [...]

Evaluation of plastics

We can perform following evaluation on polymers and elastomers in the context of exposure testing: Visual evaluations: Macroscopic and stereomicroscopic evaluation of the surface Assessment of changes in [...]

Evaluation of coatings

Evaluation of coatings is done primarily by means of visual evaluation. The condition of the coating is evaluated by assessing blistering, rust formation of the substrate, creepback at an artificially [...]

Corrosion tests

Testing of corrosion in our laboratory is mainly done by exposure testing and/or by electrochemical tests (cyclic polarization measurements). Exposure tests are closest to reality and therefore yield the [...]

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