ASTM D1735 is also known as the Standard Practice for Testing the Water Resistance of Coatings Using Water Fog Apparatus. The ASTM D1735 test can help you determine how well a product coating will resist water resistance in high condensing humidity conditions.
While very similar to the ASTM B117 corrosion test, ASTM D1735 uses only demineralized water (water that does not contain sodium chloride). ASTM B117, on the other hand, uses salt spray testing when testing for corrosion. In some cases, exposure to water may be more harmful than exposure to sodium chloride solution, because the chloride ions may be too large to penetrate the coating's crystal lattice. The ASTM D1735 test is also closely related to the ASTM G85 test, which is based on ASTM B117, but in many cases produces results that more closely match field corrosion observations.
Also, ASTM B117 is considered an accelerated corrosion test. However, ASTM D1735 uses milder test conditions and cannot be considered an accelerated corrosion test.
