What is ASTM G85?
ASTM G85 is a standard practice for modified salt spray (fog) testing. Although ASTM G85 is based on ASTM B117, it offers more aggressive test conditions such as using a test solution with a lower pH, alternating between corrosive and neutral atmosphere or by using an aggressive electrolyte mix.
What is D in ASTM?
D = Miscellaneous Materials. E = Miscellaneous Subjects. F = Materials for Specific Applications. G = Corrosion, Deterioration, and Degradation of Materials.
What is ASTM B117 standard?
ASTM B117 salt fog or salt spray test is a very popular corrosion test designed to provide corrosion resistance information on metals and coated metals. The ASTM B117 test standard has also been approved for use by Department of Defense agencies.
What is CASS test?
The copper accelerated acetic acid salt spray (CASS) test is a widely used accelerated corrosion test utilized to verify protective properties of Nickel and Chrome plated parts. The exposure duration is typically dependent on the type of corrosion resistance needed (whether it is for appearance or functional).
How can you tell if concrete is corroded?
Measuring the chloride content in concrete cover (and at the rebar surface) is a classic method in corrosion investigation of concrete structures. Powder samples are obtained from different depths (usually 5 depths from exposed surface to rebar level), and chloride profile is developed.
How does the ASTM G85 A3 SWAAT test work?
ASTM G85 Annex 3 (A3) SWAAT test is a corrosion test that uses synthetic sea salt instead of traditional sodium chloride. The solution is then acidified using glacial acetic acid. This test is to be operated under wet bottom conditions. Salt Solution: A synthetic sea salt solution made with the addition of glacial acetic acid.
What is the test cycle for ASTM G85 Annex 4?
Test Cycle: There are two test cycles specified by ASTM G85 Annex 4 (A4). 1/2- hour salt spray followed by ½ hour SO2 injection and then a 2 hour soak.
What is the ASTM G85 salt spray standard?
Another standard that is practiced here at ATC is ASTM G85 which is a modification to the ASTM B117 salt spray. This standard has five different conditions in salt spray testing which are called annexes (A1-A5).
Where can I find ASTM g85-19 fog test?
ASTM G85-19, Standard Practice for Modified Salt Spray (Fog) Testing, ASTM International, West Conshohocken, PA, 2019, www.astm.org
