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ASTM B-117 Salt Spray / Salt Fog

ASTM B-117 outlines that procedures to conduct salt spray, salt mist and salt fog testing on materials and products. The testing provides a controlled corrosive environment to determine the resistance that manufactured products and raw materials have to the high-concentrate salt conditions.

Keystone Compliance has expertise in completing salt fog testing per ASTM-B-117. With multiple salt fog chambers, including one that has an inside dimension of 8’ x 4’ x 4’. The test equipment required for salt spray (fog) exposure consists of a fog chamber, a salt solution reservoir, one or more atomizing nozzles, a supply of suitably conditioned compressed air specimen, supports, provision for heating the chamber, and necessary means of control.

Upon completion of the testing, the equipment under test is inspected to determine the amount of corrosion. There are three primary types of effects brought about by salt mist testing;

  1. Corrosion:
    • Corrosion from electrochemical reaction.
    • Accelerated stress corrosion.
    • Salt ionization in water causing the formation of acidic/alkaline solutions.
  2. Electrical Effects:
    • Creation of conductive coatings.
    • Salt deposits causing impairment of electrical material.
    • Corrosion of insulating metals and materials.
  1. Physical Effects:
    • Binding or clogging of moving parts of mechanical assemblies and components.
    • Paint blistering from electrolysis.

In addition to completing testing within its lab, Keystone Compliance can also conduct on-site testing. Please contact us to discuss you salt spray testing need and learn why Keystone Compliance has been recognized as of the fastest-growing companies in the country.