DIN 50 021-CASS Copper Chloride Acetic Acid Salt Spray Test
Can be used to test the relative resistance to corrosion of 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.
For further information on DIN standards and DIN 50 021-CASS visit; www.din.de
DIN 50 021-ESS Acetic Acid Salt Spray Test
Can be used to test the relative resistance to corrosion of 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 of DIN 50 021-ESS is variable.
For further information on DIN standards visit; www.din.de
DIN 50 021-SS Neutral Salt Spray Test
Can be used to test the relative resistance to corrosion of coatings, 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 DIN 50 021-SS is variable.
For further information on DIN standards visit; www.din.de
DEF STAN 1053 can be used to test the relative resistance to corrosion of painted samples, when exposed to an intermittent salt spray climate at an ambient temperature.
Test specimens are placed in an enclosed chamber and exposed to an indirect spray of synthetic sea water solution, which falls-out on to the samples, in a chamber temperature of ambient. The mist (salt spray) is produced daily for 8 periods of 10 minutes, at intervals of 50 minutes, with no spray being applied during weekends.
This DEF STAN 1053 test is also referred to as an ‘intermittent’ salt spray test.
DEF STAN 1053 method 24 can be used to test the relative resistance to corrosion of painted samples, when exposed to a salt spray climate at an ambient temperature.
Test specimens are placed in an enclosed chamber and exposed to a continuous indirect spray of synthetic sea water solution, which falls-out on to the specimens at a rate that consumes between 1.0 and 1.5 litres of salt solution per hour, in a chamber temperature of +20C. This climate is maintained under constant steady state conditions. The test duration of DEF STAN 1053 method 24 is variable.
This test is also referred to as a ‘cold’ salt spray test.
DEF STAN 133 can be used to test the relative resistance to corrosion of components or equipment, when exposed to a changing climate of a salt mist (spray), followed by a high humidity, at an elevated temperature.
Test specimens are placed in an enclosed chamber (a separate salt mist chamber and controlled humidity chamber are generally used), and exposed to a changing climate that comprises of the following 2 part repeating cycle. 1.0 to 2.0 hours exposure to a continuous indirect spray of salt water/synthetic seawater solution, which falls-out on to the specimens at a rate that consumes a volume of solution that represents approximately 1% of the volume of the test chamber per hour. During salt spray exposure the chamber temperature shall be at ‘normal laboratory temperature’. This is followed by 7 days exposure to a high humidity climate of 90 to 95%RH, in a chamber temperature of +35C. The entire test cycle is then repeated four times.
Note; DEF STAN 133 method 14 has been replaced by DEF STAN 00-35 Part 3 test CN2.
Salt (corrosive) atmospheres
DEF STAN 00-35 Pt3 CN2
The purpose of this defence standard test is to determine the resistance of material to salt laden atmospheres. It covers two different test methods, which are referred to at the ‘salt mist test’ and the ‘salt corrosion test’. Details as follows:
Salt mist test
This test is based upon test standard BS EN 60068-2-11. Please see elsewhere in this document for details of BS EN 60068-2-11.
Salt corrosion test
This test is based upon test standard BS EN 60068-2-52. Please see elsewhere in this document for details of BS EN 60068-2-52.
Neutral salt spray test (Renault)
Can be used to test the relative resistance to corrosion of coated 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 is variable.
Chamber volumes of less than 400 Litres are not permitted by this test standard.
This is a Renault test standard.
Salt spray corrosion tests in artificial atmospheres
- 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) or acidified (pH3.1 to 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 or +50C. This climate is maintained under constant steady state conditions. The test duration is variable.
This standard has been superseded by ISO 9227.
These tests are also referred to as a NSS, ASS & CASS tests.
For further information on British standards visit; www.bsigroup.com
Corrosion testing of metallic coatings – 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.
Chamber volumes of less than 200 Litres are not permitted by this test standard.
This test is also referred to as a CASS test.
For further information on British standards visit; www.bsigroup.com
Note; BS 5466 Part 3 has been replaced by BS 7479.
