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There are various ways to present the results of a salt spray test, and each method has its own advantages depending on the sample type and testing conditions. Below is a brief overview of some commonly used approaches:
First, corrosion can be expressed based on the percentage of the corroded area. This approach works well for flat samples but may not be suitable for complex shapes or short test durations, as measuring the exact area can be challenging. Standards that use this method include GB/T 6461-2002, which classifies specimens and test pieces in corrosion tests for metallic coatings.
Second, the corrosion rate can be calculated by dividing the main surface of the sample into small squares, typically 5×5 mm in size. This method is widely used in standards like ASTM B537-1970, which provides a practice for rating electroplated panels exposed to atmospheric conditions.
Third, the weight change of the sample before and after the test can also be used to express corrosion. This involves either measuring weight loss or weight gain, and it's usually applied to flat samples. This method gives a quantitative measure of the corrosion effect.
Fourth, the degree of corrosion can be described based on practical experience. This is a more subjective method, often used when precise measurements are not feasible. Common terms used include "very severe corrosion," "severe corrosion," "moderate corrosion," "mild corrosion," "very slight corrosion," or "good appearance."
Fifth, some methods classify corrosion based on the characteristics observed after the test. This includes visual inspection of the corrosive effects on the sample. Standards such as JB4159-1999, GJB 4.11-1983, and GB/T 4288-2003 use this approach to evaluate the performance of electrical and electronic components under salt fog conditions.
Each method offers unique insights, and the choice depends on the application, sample geometry, and required level of detail. Understanding these different expression methods helps ensure accurate and meaningful interpretation of salt spray test results.
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Second, product characteristics
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3. Use scenario
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4. Packaging and delivery
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5. After-sales service
We provide a one-year product quality guarantee, if there is a quality problem, we will unconditionally replace or refund for you. In addition, we also provide online customer service, if you have any questions, feel free to consult.
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HANGZHOU AG MACHINERY CO.,LTD , https://www.famourdecor.com