Iso 19840 pdf 2026

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ISO 19840:2004 is an international standard that outlines procedures for measuring and accepting the thickness of dry paint films on rough steel surfaces, specifically for corrosion protection. It details measurement methods, apparatus, sampling plans, and acceptance criteria to ensure uniformity in practice. The standard emphasizes the importance of correction values due to surface roughness and provides guidelines for reporting measurement results.

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Click ‘Get Form’ to open the iso 19840 PDF in the editor.
Begin by reviewing the introduction and scope sections to understand the purpose of the document and its application.
Navigate to Section 6, which outlines the procedure for measuring dry film thickness. Fill in any relevant details regarding your measurement setup.
In Section 9, input your acceptance/rejection criteria based on your measurements. Ensure that all individual dry film thicknesses meet the specified requirements.
Complete the test report section (Clause 10) by entering all necessary information such as project details, measurement results, and inspector names.

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What is ISO 19840?

ISO 19840 specifies the required number of readings depending on the size of the area to be measured in each Inspection area. There are four key requirements for acceptance of an inspection area. The average of all the individual dry-film thicknesses must be equal to or greater than the NDFT.

What is the ISO standard for coatings?

The ISO 12944 standard helps ensure proper corrosion protection and includes important information on paint technology, criteria for paint selection and surface preparation requirements.

What is the 80 20 rule for ISO 19840?

Individual dry-film thicknesses between 80% of the NDFT and the actual NDFT are acceptable provided that the number of these measurements is less than 20% of the total number individual measurements taken.

What is an ISO standard microchip?

The 80-20 rule means no more than 20% of readings can be below the minimum specified DFT, and the minimum DFT cannot be below 80% of what is specified. Factors are provided to adjust measurements for surface roughness or DFT below 30 microns.

What is the difference between ISO 19840 and SSP PA2?

Key differences include: SSPC PA2 recommends specifying minimum and maximum thickness ranges while ISO 19840 recommends a single nominal dry film thickness value. SSPC PA2 allows gauge readings to vary up to 20% from specified values, while ISO 19840 requires 80% minimum of nominal.