Salt Spray (fog) testing according to ASTM B117

Salt Spray2

The salt spray test (also known as salt fog or salt mist) has been the bench-mark corrosion test in many industries for decades. With such a long history, so much test data and many international test standards written around it, The salt spray test remains a very popular test to see whether or not test samples corrode in accordance with expectations.


The American Society of Testing and Materials (ASTM) test B117 is one of the most widely adopted standards for salt spray testing. Its use is internationally widespread and its provisions have been frequently re-written into the national standards of other countries, and also appear in other industry specific corrosion test standards.

This practice covers the apparatus, procedure, and conditions required to create and maintain the salt spray (fog) test environment.

All Ascott Salt Spray (fog) apparatus apply to this ASTM B117 standard.

Learn more about our Salt Spray corrosion test chambers