BS 5466 Part 3

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.

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Note; BS 5466 Part 3 has been replaced by BS 7479.

BS 7479

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This standard has been superseded by ISO 9227.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.

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BS 5466 Part 2

Corrosion testing of metallic coatings – 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.

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Note; BS 5466 Part 2 has been replaced by BS 7479.

BS 3900 Part F12

Paints & Varnishes – Determination of Resistance to neutral salt spray (fog)

Can be used to test the relative resistance to corrosion of paints and varnishes, when exposed to a salt spray (fog) 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 2.5ml/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 test is also referred to as a Neutral Salt Spray or NSS test.

For further information on British standards visit; www.bsigroup.com

BS 5466 Part 1

Corrosion testing of metallic coatings – neutral salt spray test

Can be used to test the relative resistance to corrosion of metallic 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 is variable.

Chamber volumes of less than 200 Litres are not permitted by this test standard.

This test is also referred to as an NSS test.

For further information on British standards visit; www.bsigroup.com
Note; BS 5466 Part 1 has been replaced by BS 7479.

BS2011 Part2.1 Kb

Basic environmental testing procedures, salt mist, cyclic

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. 2.0 hours exposure 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 +15 to+35C. This is followed by either 7 days or 20 to 22 hours (depending on the test severity) exposure to a high humidity climate of 93%RH, in a chamber temperature of +40C. The number of cycle repeats is variable depending on the test severity.

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Note; BS2011 Part2.1 Kb has been replaced by BS EN 60068-2-52.

BS 3900 Part F4

Resistance to continuous salt spray

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 is variable.

This test is also referred to as a ‘cold’ salt spray test.

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BS2011 Part2.1 Ka

Basic environmental testing procedures, salt mist

Can be used to test the relative resistance to corrosion of protective coatings, when exposed to a salt mist (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 a Neutral Salt Spray or NSS test.

For further information on British standards visit; www.bsigroup.com

Note; BS2011 Part2.1 Kb has been replaced by BS EN 60068-2-11.

BS 3900 Part F2

Determination of Resistance to Humidity Under Condensation Conditions

Can be used to test the resistance of coated specimens to condensation conditions in a temperature cycling climate.

Test specimens are placed in an enclosed chamber, in which a climate is created that comprises of a heated, saturated mixture of air and water vapour, at a temperature that cycles continuously between +42C and + 48C and a constant relative humidity of 100%RH. The time taken for each cycle from 42C to 48C and back to 42C shall be 60 minutes, with the heating and cooling times being approximately equal. The number of cycle repeats and therefore the test duration is variable.

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