ASTM B117 Corrosion Testing

Salt Spray Chambers Testing Materials for Corrosion Resistance

APPLIED TECHNICAL SERVICES IS A2LA ACCREDITED TO PERFORM THE ASTM B117 SALT SPRAY TEST, AN INTERNATIONALLY RECOGNIZED METHOD FOR DETERMINING CORROSION RESISTANCE IN TEST MATERIALS. THIS PROCESS USES A HIGHLY CORROSIVE SALTWATER SOLUTION TO PROMOTE CORROSION MUCH MORE QUICKLY THAN IT OCCURS IN REAL-WORLD ENVIRONMENTS.

Corrosion of Metals

Metals, like other materials, deteriorate over time. They are especially susceptible over long periods to the incessant, incremental destruction brought about by weathering factors like moisture and salinity. This phenomenon, known as corrosion, causes the eventual failure of metal products by undermining their physical performance (durability, structural integrity, etc.) and their visual qualities (color, surface condition, etc.).

By covering their product’s metal components in a protective coating, they can slow its decay by sealing the substrate away from weathering elements. They may also adjust the composition of the metal’s alloy, as different metals resist weathering to different degrees. To judge the effectiveness of their efforts, manufacturers send samples of their product to Applied Technical Services; we perform salt spray testing to the standard of ASTM B117 to determine test materials’ resistance to corrosion.

About the Method

Also known as salt fog, salt spray is a test method that involves shutting sample materials into an air-tight chamber. This piece of equipment will expose the test sample to a salt spray (thus the test’s name) for a predetermined amount of time. The spray is a simple mixture of salt and water, with greater concentrations of salt yielding a more corrosive test environment. The resulting solution is constantly funneled into the salt spray chamber for the duration of the test, creating an atmosphere more corrosive than most naturally occurring situations and quickly weathering the sample.

ATS’ technicians monitor the condition of the sample materials as the test progresses and compare the results against expectations to determine whether the metals performed as well as anticipated under the salt spray. Our lab is A2LA accredited to perform salt spray testing to ASTM B117.


ATS and Salt Spray Testing

ATS has delivered testing, inspection, and engineering consulting services of superior quality for over 50 years. We serve clients operating around the globe and hail from a variety of industries ranging from aerospace to manufacturing to pharmaceuticals. Our technicians return accurate results quickly due to their experience performing this test method to ASTM B117, its internationally recognized standard.

Whether for quality management, failure analysis, or product safety purposes, ATS’ corrosion testing lab can help determine your product’s resistance to corrosion — let us take a closer look.




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