ASTM D4935
Standard Test Method for Measuring the Electromagnetic Shielding Effectiveness of Planar Materials
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About This Item
ASTM D4935 is a technical standard for measuring the electromagnetic shielding effectiveness of planar materials. It provides a consistent way to evaluate how well flat materials help reduce electromagnetic energy transmission, which is important for product comparison, material selection, and performance verification. As a practical reference for testing and quality control, this standard supports more reliable decisions when shielding performance needs to be documented or assessed in a repeatable manner.
What is ASTM D4935?
ASTM D4935 is the ASTM standard titled Standard Test Method for Measuring the Electromagnetic Shielding Effectiveness of Planar Materials. Its purpose is to define a test method for determining how planar materials perform as electromagnetic shields. The standard is mainly relevant when a consistent measurement approach is needed for flat sheet-like materials and related product forms. ASTM D4935 helps create a common technical basis for evaluating shielding effectiveness in a controlled and repeatable way.
Where is ASTM D4935 used?
This standard is commonly used in laboratories, product development, and materials evaluation workflows where planar shielding materials must be tested and compared. It is especially useful for manufacturers, engineers, and quality teams working with materials intended to reduce electromagnetic interference. ASTM D4935 may also support procurement and compliance review when shielding performance needs to be verified against a recognized test method. Its value is strongest wherever flat materials are selected for performance-sensitive applications.
Why is ASTM D4935 important?
ASTM D4935 matters because it helps standardize how shielding effectiveness is measured, reducing variation between test results and improving comparability. That consistency supports better product evaluation, supplier qualification, and internal quality control. For organizations assessing planar shielding materials, ASTM D4935 can help document performance in a way that is easier to review, specify, and communicate. It also helps reduce technical risk by using a recognized method for measurement.
- Standard method for planar materials
- Measures electromagnetic shielding effectiveness
- Supports repeatable test results
- Useful for product evaluation and QC
- Helps compare shielding performance consistently
- Publication Date: 2018-05-15
- Publisher: ASTM
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