Salt Spray, Salt Fog & Corrosion Testing

A salt spray test is a corrosion testing method that uses high-saline environments to measure the corrosion resistance of products, paints and coatings over extended periods. 

Sometimes referred to as salt fog, a salt spray test is conducted in a closed chamber that can be adjusted to create a variety of corrosive environments. During testing, samples are subjected to a specified salt concentration for a pre-determined amount of time, based on specification, product type, or industry standards.

Salt spray test conditions

In a typical salt spray test, a standardized solution of 5% NaCl (sodium chloride) is used to create a highly corrosive atmosphere. For projects with additional requirements, we can often adjust environmental conditions like temperature and humidity to simulate specific climates or working conditions. 

Samples are often checked at regular intervals to monitor corrosion levels and record any milestones, such as white and red rust development or coating degradation. Our labs can provide detailed test reports that include pictures and descriptions of each stage of testing, from start to finish.

Salt fog vs salt spray testing

From a testing standpoint, salt fog testing and salt spray testing are the exact same test. These are often referred to by these different names because the levels of salt being applied vary accordingly to the specific environmental conditions needed to be replicated. The test typically applies salt and/or sea mist to coated or painted marine, automotive and military equipment, testing for corrosion over time through an accelerated process.

Salt spray capabilities

Our experts can assist in choosing the most appropriate test method for multiple coating types, including electroplated copper-nickel-chromium, electroplates copper-nickel, and anodized aluminum. 

The Element advantage

We support salt spray tests for a variety of products and applications, and our corrosion experts are highly trained across multiple disciplines. With a global platform of accredited, high-capacity labs in the in the Americas, Europe, Middle East, Africa and Asia, we help ensure that your projects are accurate, on-time, and within budget.

Speak to an expert today for more information or to request a quote.