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 is variable.

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

DEF STAN 1053 method 36

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 test is also referred to as an ‘intermittent’ salt spray test.

DEF STAN 133 method 14

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Note; DEF STAN 133 method 14 has been replaced by DEF STAN 00-35 Part 3 test CN2.

DEF STAN 00-35 Pt3 CN2

Salt (corrosive) atmospheres

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.