The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes International Standards for all electrical, electronic and related technologies.

 

Introduction

Environmental Testing - Part 2-52: Tests Kb:

Salt Mist, Cyclic Sodium Chloride Solution - this cyclic salt mist test may be used to indicate deterioration of some non-metallic materials by assimilation of salts. In the various test methods described in this document, the period of spraying with the relevant salt solution is sufficient to wet the test specimen(s) thoroughly. Because this wetting is repeated after intervals of storage under humid conditions supplemented by storage under a standard atmosphere, it goes some way to reproducing the effects of natural environments.

Furthermore, considering natural environments for corrosion on metallic materials, neutral or acidified salt solution spray, humid, and dry conditions are also important factors as a cyclic corrosion test. Each condition is repeated after intervals of other conditions in different combinations to achieve corrosion on metallic materials and to get acceleration of corrosion.

IEC 60068-2-52 specifies the application of the cyclic salt mist test to components or equipment designed to withstand a salt-laden atmosphere as salt can degrade the performance of parts manufactured using metallic and/or non-metallic materials.

 

Test Conditions

The test contains 8 different test methods as follows:

Test Chamber

For test methods 1 and 2, a salt mist chamber and humidity chamber can be used.

For test methods 3 to 6, a salt mist chamber, humidity chamber and standard atmosphere chamber can be used.
For test methods 7 and 8, a salt mist chamber, dry chamber and humidity chamber can be used.

All methods for this test can be carried out in an Ascott Cyclic Corrosion Chamber fitted with a Dehumidification and cooling system , wall wash and blower heater system as shown on the right

If you would like further information please call our experienced team on 01827 318040 or email sales@ascott-analytical.com

 

 

 

 

For a reference guide on how to test to IEC 60068-2-52 using an Ascott chamber click the button below;

 

Test Methodology PDF

Typcial Applications

 

Test method 1 should be used to test products which are exposed to the environment for much of their operational life (e.g. ship radar, deck equipment).

Test method 2 should be used to test products which may be exposed to the marine environment from time to time but will normally be protected by an enclosure (e.g. navigational equipment which will normally be used on the bridge or in a control room).

Test methods 3 to 6 can be used for products where, under normal use, there is a frequent change between salt-laden and dry atmosphere, for example automobiles and their parts.

Test method 7 defines a specific number of test cycles that include spraying salt mist, followed by dry conditions and humid conditions. The process can be used as a
general corrosion test for many materials including automobiles and their parts.

Test method 8 contains the same cyclic exposure as test method 7, but utilizes an acidified salt solution instead of a neutral salt solution to induce a corrosion that occurs in
acidified salt environment.