Meaning and use
3.1 Tests of the type described in this practice may be used to assess the corrosion resistance of organic coatings to metal products exposed to high salt environments, such as areas subjected to deicing salts or coastal areas. Exposure conditions are complex and variable. Important factors include climate, time of year, presence of pollution, etc. It is often difficult, if not impossible, to precisely define or measure all the factors that influence degradation. Exposure tests need to be repeated over different seasons and a period of at least two years to obtain results representative of any given location.

3.2 A control sample should always be used as this is a comparison test.

ASTM D6675-01-2015 Standard Practice for Salt-Accelerated Outdoor Corrosion Testing of Cosmetic Products for Organic Coatings on Automotive Steel Plates

Step 1: Scope
1.1 This practice is intended to assist in the procedures that should be followed for outdoor exposure to assess the possible cosmetic corrosion of steel plates covered with organic coatings. The outdoor exposure described is based on practice G7 and includes regular wetting of the test sample with a salt solution.

1.2 The method of specimen preparation and the special exposure requirements of the material are beyond the scope of this practice.

1.3 Values expressed in SI units shall be considered standard. The values given in parentheses are for reference only.

1.4 This standard is not intended to address all safety concerns, if any, associated with its use. It is the responsibility of users of this standard to establish appropriate safety and health practices and to determine the applicability of regulatory restrictions prior to use.