ASTM G85

ASTM G85 annex A1 - acetic acid salt spray test, continuous

Can be used to test the relative resistance to corrosion of decorative chromium plating on steel and zinc based die castings, when exposed to an acetic acid salt spray climate at an elevated temperature.

ASTM G85 annex A2 - cyclic acidified salt spray test

Can be used to test the relative resistance to corrosion of aluminium alloys when exposed to a changing climate of acetic acid salt spray, followed by air drying, followed by high humidity, all at an elevated temperature. This test was developed for exfoliation testing on certain aluminum alloys. Exfoliation testing determines the rate at which corrosion products form and fall away from the body of the test sample.

ASTM G85 annex A3 - seawater acidified test, cyclic

Can be used to test the relative resistance to corrosion of coated or uncoated aluminium alloys and other metals, when exposed to an changing climate of acidified synthetic seawater spray, followed by a high humidity, both at an elevated temperature.

ASTM G85 annex A4 - Sulphur dioxide (SO2 ) salt spray test, cyclic

Can be used to test the relative resistance to corrosion of product samples that are likely to encounter a combined SO2/salt spray/acid rain environment during their usual service life.

ASTM G85 annex A5 - dilute electrolyte cyclic fog /dry test

This test has widespread use in the industrial protective coatings market, reflecting its origins in that industry. As an indication of its practical application, the test has become a performance requirement by the United States Postal Service for curbside mailboxes, as part of USPS specification 39CFS Part 111. (Ref: Federal Register, 2/8/01 Vol. 66, #27 pgs 5909-5922). This incorporation of the ASTM G85 requirements within the USPS specification also provides an excellent example of the manner in which such standards were designed to be used.