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.
Test specimens are placed in an enclosed chamber, and exposed to a changing climate that comprises of the following 3 part repeating cycle. 0.75 hours exposure to a continuous indirect spray of acidified (pH 2.8 to 3.0) salt water solution, which falls-out on to the specimens at a rate of 1.0 to 2.0ml/80cm²/hour. This is followed by 2.0 hours exposure to an air drying (purge) climate. This is followed by 3.25 hours exposure to a high humidity climate of 95%RH. The entire test cycle is at a constant chamber temperature of +49C. The number of cycle repeats and therefore the test duration is variable.
This test is also referred to as a MASTMAASIS test.
For further information on ASTM standards visit; www.astm.com
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.
Test specimens are placed in an enclosed chamber and exposed to a continuous indirect spray of acidified (pH 3.1to 3.3) salt water solution, which falls-out on to the specimens at a rate of 1.0 to 2.0ml/80cm²/hour, in a chamber temperature of +35C. This climate is maintained under constant steady state conditions. The test duration is variable.
This test is also referred to as an ASS test.
For further information on ASTM standards visit; www.astm.com
Acidified Synthetic Sea Water (Fog) Testing
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.
Test specimens are placed in an enclosed chamber, and exposed to a changing climate that comprises of the following two part repeating cycle. 30 minutes exposure to a continuous indirect spray of acidified (pH 2.8 to 3.0) synthetic seawater solution, which falls-out on to the specimens at a rate of 1.0 to 2.0ml/80cm²/hour. This is followed by 90 minutes exposure to a high humidity climate of above 98%RH. The entire test cycle is at a constant chamber temperature of +49C (may be reduced to +24 to +35C for organically coated specimens). The number of cycle repeats and therefore the test duration is variable.
This test is also referred to as a SWAAT test.
For further information on ASTM standards visit; www.astm.com
Note; ASTM G43 has been replaced by ASTM G85 annex A3
Copper Accelerated Acetic Acid Salt Spray (Fog) Testing
Can be used to test the relative resistance to corrosion of anodized aluminium and decorative copper/nickel/chromium or nickel/chromium coatings on steel and zinc based die castings, when exposed to a copper accelerated acetic acid salt spray climate at an elevated temperature.
Test specimens are placed in an enclosed chamber and exposed to a continuous indirect spray of acidified (pH 3.1to 3.3) salt water solution, which falls-out on to the specimens at a rate of 1.0 to 2.0ml/80cm²/hour, in a chamber temperature of +49C. This climate is maintained under constant steady state conditions. The test duration is variable.
This test is also referred to as a CASS test.
For further information on ASTM standards visit; www.astm.com
Acetic Acid Salt Spray (Fog) Testing
Can be used to test the relative resistance to corrosion of inorganically and organically coated ferrous and non-ferrous metals, when exposed to an acetic acid salt spray climate at an elevated temperature.
Test specimens are placed in an enclosed chamber and exposed to a continuous indirect spray of acidified (pH 3.1to 3.3) salt water solution, which falls-out on to the specimens at a rate of 0.75 to 2.0ml/80cm²/hour, in a chamber temperature of +35C. This climate is maintained under constant steady state conditions. The test duration is variable.
This test is also referred to as an ASS test.
For further information on ASTM standards visit; www.astm.com
Note; ASTM B287 has been replaced by ASTM G85 annex A1
Operating Salt Spray (Fog) Apparatus
ASTM B117 can be used to test the relative resistance to corrosion of coated and uncoated metallic specimens, when exposed to a salt spray climate at an elevated temperature.
Test specimens are placed in an enclosed chamber and exposed to a continuous indirect spray of neutral (pH 6.5 to 7.2) salt water solution, which falls-out on to the specimens at a rate of 1.0 to 2.0ml/80cm²/hour, in a chamber temperature of +35C. This climate is maintained under constant steady state conditions. The test duration of ASTM B117 is variable.
This test is also referred to as a Neutral Salt Spray or NSS test.
For further information on this standard visit; www.astmb117.com
For further information on ASTM standards visit; www.astm.com
Corrosion & related property tests – copper accelerated acetic acid salt spray test
Can be used to test the relative resistance to corrosion of metallic coatings, when exposed to a copper accelerated acetic acid salt spray climate at an elevated temperature.
Test specimens are placed in an enclosed chamber and exposed to a continuous indirect spray of acidified (pH 3.1to 3.3) salt water solution, which falls-out on to the specimens at a rate of 1.0 to 2.0ml/80cm²/hour, in a chamber temperature of +50C. This climate is maintained under constant steady state conditions. The test duration is variable.
This test is also referred to as a CASS test.
Chamber volumes of less than 200 Litres are not permitted by this test standard.
For further information on Australian standards visit: www.standards.com.au
Corrosion & related property tests – acetic acid salt spray test
Can be used to test the relative resistance to corrosion of metallic coatings, when exposed to an acetic acid salt spray climate at an elevated temperature.
Test specimens are placed in an enclosed chamber and exposed to a continuous indirect spray of acidified (pH 3.1to 3.3) salt water solution, which falls-out on to the specimens at a rate of 1.0 to 2.0ml/80cm²/hour, in a chamber temperature of +35C. This climate is maintained under constant steady state conditions. The test duration is variable.
Chamber volumes of less than 200 Litres are not permitted by this test standard.
This test is also referred to as an ASS test.
For further information on Australian standards visit: www.standards.com.au
Corrosion & related property tests – neutral salt spray test
Can be used to test the relative resistance to corrosion of inorganic and organic coatings on metallic substrates, when exposed to a salt spray climate at an elevated temperature.
Test specimens are placed in an enclosed chamber and exposed to a continuous indirect spray of neutral (pH 6.5 to 7.2) salt water solution, which falls-out on to the specimens at a rate of 1.0 to 2.0ml/80cm²/hour, in a chamber temperature of +35C. This climate is maintained under constant steady state conditions. The test duration is variable.
This test is also referred to as an NSS test.
Chamber volumes of less than 200 Litres are not permitted by this test standard.
For further information on Australian standards visit: www.standards.com.au
Salt spray corrosion test used to test the effectiveness of corrosion protection systems
Can be used to test the relative resistance to corrosion of metallic materials with or without temporary or permanent corrosion protection, when exposed to a salt spray climate (neutral salt spray or acetic acid salt spray or copper accelerated acetic acid salt spray) at an elevated temperature.
Test specimens are placed in an enclosed chamber and exposed to a continuous indirect spray of neutral (pH 6.5 to 7.2) salt water solution, which falls-out on to the specimens at a rate of 30 to 40 ml/80cm²/24 hours, in a chamber temperature of +35°C or +50°C. This climate is maintained under constant steady state conditions. The test duration is variable. The chamber should not be filled to more than 50% capacity.
In all other respects this test is based upon ISO9227.
For further information on ISO standards visit; www.iso.org
Note: many ISO test standards have been harmonized with other European standards and these are now prefixed ‘EN’ (Euro Norm) or ‘** EN’ – where ** are the letters representing a European country/language code, for example ‘BS EN’ for a harmonized British standard in English language.
