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The Volvo VCS 1027, 1449 test (also known as ACT-2) is a test method developed to evaluate the corrosion resistance of metals, especially in environments with a high concentration of sodium chloride from a marine influence or from winter de-icing solutions.
The test has a number of potential uses in the verification of design changes;
To improve the performance of corrosion resistant products and materials.
Assisting in the development of new and improved pre-treatments and finishing processes.
Assisting in the quality control of manufactured products.
The Volvo VCS 1027, 1449 standard was developed in conjunction with Ford and is equivalent to CETP 00.00-L-467.
The test method is composed of approximately 0.5% NaCL salt mist applications combined with a drying and controlled temperature and humidity phases, the length of the test process is variable.
The recommended specification for the equipment required to undertake this test includes the use of oscillating spray nozzles located high up in the test chamber. These spray salt water solution down on to test samples located beneath, in a precise spray pattern, to ensure a uniform distribution.
Specimens to be tested are exposed to a variety of environmental conditions, the first 5 days comprising of the following three part repeating cycle;
Following 5 days of repeating cycles of the above there should be 48 hours exposure to a constant climate of 50°C and 70%RH.
This corrosion test is utilised widely by Volvo and by their suppliers as a quality audit of coated parts.