The salt spray test is an accelerated corrosion test used to measure the comparative corrosion resistance of materials exposed to a salt spray or salt fog at high temperature.

This corrosion test is intended to provide corrosion resistance information on metals and coated metals. With visual inspection following this test the suitability of coatings, paints and metals to resist corrosion or exposure to marine environments can be determined.

The salt spray test is also known as ASTM B117 and fog testing.

Reference Standard

GB/T 6461-2002

Methodsfor corrosion testing of metallic and other inorganic coatings on metallic substrates – Rating of test specimens and manufactured articles subjected to corrosion tests
Note: GB/T means Chinese national standard