Reduce risk and maintain compliance with our specialist risk management services.

We’re proud to be a leading provider of complete life cycle risk management solutions. From ensuring asset safety and legal compliance with our thorough engineering inspections to driving operational efficiency with our specialist non-destructive testing services, (and much more in between), we’re proud of the long-lasting partnerships we have formed with our customers over the last 160 years, based on the value of our solutions.

Salt Spray Testing

Salt spray testing, also known as salt fog testing or salt corrosion testing, is a method to assess how well coatings and surface treatments can withstand corrosion.

Coatings and finishes serve as a shield to protect materials, and the salt spray test helps determine the effectiveness of these protective layers. It also provides insights into the product’s resistance or susceptibility to corrosion in real-world conditions.

This involves exposing samples to a controlled saline (saltwater) environment to simulate the corrosive conditions that materials may face in real-world settings, such as coastal or marine environments.

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Neutral Salt Spray Test Standards

Various international standards, such as ASTM B117 and ISO 9227, provide guidelines for conducting salt spray testing. We work to the following Salt Spray Testing standards:

  • ASTM B117 – Standard practice for operating salt spray (fog) apparatus.
  • BS EN ISO 9227 – Method for salt spray corrosion tests in artificial atmospheres.

Find out how Salt Spray Testing reveals the true resistance of products to corrosion in real-world conditions!

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Our Salt Spray Testing Process

Salt spray testing is commonly used in industries such as automotive, aerospace, marine, and manufacturing to assess the corrosion resistance of materials and coatings. The test provides accelerated results, allowing for the evaluation of corrosion performance in a relatively short period compared to natural environmental exposure.

Here’s how we carry out our Salt Spray tests:

  • Preparation of Test Specimens: Materials or coated samples that need to be tested for corrosion resistance are prepared and cleaned thoroughly.
  • Exposure to Salt Spray: The prepared specimens are placed in a test chamber, commonly known as a salt spray chamber or fog chamber. The chamber is filled with a saline solution, typically a 5% sodium chloride (NaCl) solution, although other concentrations may be used depending on the testing standards.
  • Controlled Testing Conditions: The test chamber is set to specific testing conditions, including temperature, humidity, and duration of exposure. The specimens are continuously exposed to the salt spray environment during the testing period. Every 24 hours, we assess the level of corrosion on each sample and take detailed notes.
  • Evaluation of Corrosion Resistance: After a predetermined test duration, the specimens are removed from the chamber. The degree of corrosion, including the formation of rust or other corrosion products, is visually assessed and often quantified using corrosion rating scales.
  • Reporting: Once the designated testing period is complete, we conduct a final evaluation based on the relevant standard or customer specification. This comprehensive evaluation is then documented in a detailed test report, complete with accompanying pictures.

It’s important to note that salt spray testing is just one of many accelerated corrosion tests, and while it provides valuable information, results should be interpreted in conjunction with other tests and real-world conditions to gain a comprehensive understanding of a material’s or coating’s corrosion resistance.

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We've built a strong reputation for providing exceptional service to over 35,000 satisfied customers from diverse industries. Our unwavering commitment to customer satisfaction has resulted in long-standing partnerships and unwavering trust.

800+ expert engineers

Our team of over 800 skilled engineers possesses a wealth of knowledge and expertise in a range of disciplines. Their deep understanding of your equipment and operating conditions ensures that they deliver proactive solutions that optimise asset performance and minimise downtime

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You can be confident that our services will be conducted to the highest standards, as we hold a number of accreditations that demonstrate our commitment to quality.

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