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Micom Laboratories is happy to inform you that we have recently expanded our scope of testing of regular surface finishes tests to include ASTM B117 and many related corrosion testing services such as cyclic corrosion, ASTM G85 and ASTM D5894.  Salt spray testing  is widely used in a lot of industry types as well as in many standards. These new services complement our existing UV testing services by either xenon arc exposure according to ASTM G155 or by fluorescent light exposure done to ASTM G154 as well as the other finishes tests we offer such as pencil hardness, impact resistance, taber abrasion, color measurements and many other tests.  These new tests also complement our environmental testing services.

Salt spray testing is known not to always offer reliable results as the static conditions are not well representing what happens normally in the field.  More evolved accelerated corrosion techniques such as ASTM G85 and ASTM D5894 are now used more and more frequently.

The test cabinet used to test to ASTM G-85 is the same as the one for ASTM B117.  What differs is the corrosive atmosphere.  In ASTM G85 you have a choice of 5 different atmospheres depending of your application:

Annex Modification
A1 Acetic acid-salt spray test, continuous
A2 Cyclic acidified salt spray test
A3 Seawater acidified test, cyclic (SWAAT)
A4 SO 2 salt spray test, cyclic.
A5 Dilute electrolyte cyclic fog dry test

Testing to ASTM D-5894 requires the use of two distinct cabinets: a salt spray cabinet (ASTM B-117) and a UV/condensation cabinet equipped with fluorescent light sources.  Typically the test is run by alternating 1 week of salt spray and 1 week of UV exposure.  The salt spray part uses ASTMG-85, cycle A2.  This test method is believed to better simulate outdoor exposure by synergistically combining 2 organic coatings aging mechanisms.

For more information about these new services and our coating testing services, please don’t hesitate to contact us.

Micom is a third party material testing laboratory accredited by the Standards Council of Canada, CGSB and ISTA.

Did you know?

In 2002, the US Federal Highway Administration released a study titled Corrosion Costs and Preventive Strategies in the United States on the direct costs associated with metallic corrosion in the U.S. industry. In 1998, the total annual direct cost of corrosion in the U.S. was ca. $276 billion (ca. 3.2% of the US gross domestic product).


All of the information and opinions contained in this blog are made with the information, and the understanding that we have reviewed at the time of publishing.  However, despite our efforts, we do not offer any guarantee of their accuracy, thoroughness of our investigation or validity. The author of this blog is not liable for any inaccuracies or any losses or damages that may result from the use of the information or data contained herein. This blog has not been reviewed or verified for its accuracy by any peer group associates prior to publication.

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