ASTM B117 (Standard Practice for Operating Salt Spray (Fog) Apparatus)

ASTM B117 is a standardized method for testing how well protective coatings resist corrosion by exposing them to a controlled, continuous salt spray (fog) environment. It involves placing coated samples in a sealed chamber where a saline or saltwater mist is generated. This simulates harsh, salty conditions like those near the ocean. The test helps evaluate the durability and corrosion resistance of coatings or materials over time. Results are used to compare product performance, improve coatings, and ensure that products meet quality standards for corrosion protection.