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Salt spray test

A test that simulates an environment in which a product rapidly rusts.

The salt spray test is the most common corrosion test for metals with or without an organic or inorganic coating. Through constant spray treatment with sodium chloride solution in a climatic chamber, corrosion formation is accelerated and the corrosion resistance of a material can be checked.

There are several standards that describe the salt spray test. The most well-known are NEN EN ISO 9227, ASTM B117 and DIN 50021. There are 3 different tests: The neutral salt spray test, the acetic acid salt spray test and the copper acetic salt spray test.

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How does the salt spray test work?

The test is usually performed on panels, made from the material under investigation, with a size of about 150×100 mm. These test panels are placed in the climatic chamber at an angle of ±20° to vertical. In the case of organic coatings, a scratch is often applied, with a width of 1 or 2 mm.

At the end of the test, the coating is assessed for degradation according to ISO 4628 or a similar method.

Reporting and advice

Within five business days of completing the salt spray test, you will receive a report with the results. After reading the report, you may still need advice on how to improve the quality of the product. As specialists in the field of industrial surface treatment, our employees always have advice to help you with this.

Call +31 (0)13 463 06 88 for more information on turnaround times for your required laboratory tests.

Gerelateerde ISO-normeringen

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