ASTM B244
Standard Test Method for Measurement of Thickness of Anodic Coatings on Aluminum and of Other Nonconductive Coatings on Nonmagnetic Basis Metals with Eddy-Current Instruments
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About This Item
ASTM B244 is the standard test method for measuring the thickness of anodic coatings on aluminum and other nonconductive coatings on nonmagnetic basis metals using eddy-current instruments. It is intended for situations where a nondestructive thickness check is needed for coated parts and finished components. By defining a consistent measurement approach, ASTM B244 helps support reliable inspection results, better quality control, and more confident acceptance of coated metal products.
Purpose of ASTM B244
The purpose of ASTM B244 is to provide a recognized method for determining coating thickness with eddy-current instruments on aluminum and other nonconductive coatings applied to nonmagnetic basis metals. This makes it useful for evaluating coating performance without damaging the part being tested. The standard gives manufacturers, inspectors, and buyers a common technical reference for measurement practices, helping reduce variation in results and improving consistency across testing and compliance workflows.
Common use cases of ASTM B244
ASTM B244 is commonly used in inspection and quality assurance settings where anodic coatings on aluminum or similar nonconductive coatings on nonmagnetic metals must be verified. It is often applied to finished parts, production batches, and incoming materials where coating thickness affects appearance, durability, or specification compliance. The method is also relevant when eddy-current instruments are part of routine shop-floor or laboratory testing, supporting fast, nondestructive measurements.
Why ASTM B244 matters
This standard matters because coating thickness can influence product performance, appearance, and customer acceptance. ASTM B244 helps organizations use a consistent measurement method, which is important for procurement, inspection records, and quality control decisions. A clear, repeatable test method also reduces the risk of disputes between suppliers and purchasers and supports more dependable evaluation of coated aluminum and other nonmagnetic metal parts.
- Nondestructive thickness measurement
- Eddy-current instrument use
- Anodic coatings on aluminum
- Nonconductive coatings on nonmagnetic metals
- Quality and compliance testing
- Publication Date: 2021-05-10
- Publisher: ASTM
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