ASTM B568 is the ASTM standard for Standard Test Method for Measurement of Coating Thickness by X-Ray Spectrometry. It describes a test approach for evaluating coating thickness with X-ray spectrometric techniques, making it useful when controlled, noncontact measurement is needed for quality assurance and product verification. For manufacturers, labs, and inspectors, this standard helps support more consistent coating evaluation and clearer compliance decisions across coated parts and finished components.

Overview of ASTM B568

This standard focuses on measuring coating thickness using X-ray spectrometry, a method commonly associated with precise analytical testing of thin surface layers. ASTM B568 provides a technical framework for this type of measurement so results can be applied consistently in inspection and quality control workflows. As an ASTM standard, it is especially relevant when users need a recognized method for evaluating coating thickness in a repeatable, documented way. ASTM B568 supports that objective with a defined test-method basis.

Common use cases of ASTM B568

ASTM B568 is commonly used in settings where coating thickness must be checked without relying on destructive testing. It may be applied in production inspection, incoming material verification, or final product review for coated metals and similar finished surfaces. The method is also useful in laboratory and metrology environments that use X-ray spectrometers to assess coating performance or confirm conformance to specification requirements. In these workflows, ASTM B568 helps standardize measurement practice.

Benefits of using ASTM B568

Using ASTM B568 can improve consistency in coating thickness measurement and reduce ambiguity in technical evaluation. It supports quality control by giving organizations a recognized test method for comparison, documentation, and compliance review. That can help reduce risk in procurement, manufacturing acceptance, and product release decisions. Because the method is based on X-ray spectrometry, it is also valuable where noncontact measurement and repeatable analytical results are important to engineering and inspection programs.

• X-ray spectrometric thickness measurement
• Coating evaluation and verification
• Quality control and inspection support
• Noncontact testing workflow
• Consistent compliance documentation