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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.
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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