ASTM F3057-21 PDF

Full title and description

ASTM F3057-21 — Standard Test Method for Electromagnetic Shielding Effectiveness of Glazings. This standard specifies a repeatable test method and measurement procedure for determining the electromagnetic shielding (EMI) transmittance and shielding effectiveness of glazing materials and glazing configurations (single lites or insulating units), including products with coatings, films, interlayers or other enhancements.

Abstract

Provides a standardized set of measurements to assess glazing as a component for electromagnetic shielding over a broad frequency range. The method defines required test frequencies, measurement points and source-field types (magnetic, electric, and plane‑wave) and is intended to minimize variability between test sites and personnel so results are comparable across suppliers and laboratories. The standard is written for component-level evaluation (not full building systems) and uses SI units.

General information

• Status: Active.
• Publication date: October 15, 2021 (F3057‑21; ASTM record shows last updated November 11, 2021).
• Publisher: ASTM International.
• ICS / categories: Glass in building — 81.040.20 (glazings).
• Edition / version: F3057‑21 (revises F3057‑16 and earlier editions).
• Number of pages: 8 pages (published document).

Scope

This test method covers determination of electromagnetic shielding effectiveness (EMI transmittance) of glazings and glazing configurations as components. It applies to samples with and without conductive or absorptive coatings, films, interlayers, or laminates and is intended for standardized specimens mounted in a defined frame and size. The method specifies assessment for three source fields (magnetic, electric, and plane wave) and is for frequency coverage from 100 kHz up to 20 GHz. It is explicitly a component test—not for full wall, ceiling, floor, or complete window/wall systems.

Key topics and requirements

• Measurement procedures for shielding effectiveness (SE) and transmittance of glazing materials and units.
• Required frequency range: 100 kHz to 20 GHz with specified test frequencies within that range.
• Assessment of three source‑field types: magnetic field, electric field, and plane wave.
• Standardized specimen size and mounting frame to improve repeatability and comparability between laboratories.
• Applicability to plain, coated, filmed, laminated, and insulating glazing configurations.
• Specification of minimum measurement set and procedures to reduce variability due to personnel, equipment, or test site.
• Use of SI units and standardized reporting; notes on hazards and safety appear in the standard (see Clause on Hazards).

Typical use and users

Used by glazing and glass product manufacturers, façade and window-system designers, architects and building engineers concerned with EMI/EMC performance, security/EMI system integrators, and independent test laboratories performing shielding effectiveness evaluations. Also used by procurement/specification writers who need component-level SE data for system design or product selection.

Related standards

Previous editions (ASTM F3057‑16, F3057‑14) are directly related as predecessor documents. Related documents include other ASTM F12 committee standards addressing glazing and security topics and general EMI/EMC test standards from international bodies (for complementary measurement methods and system-level EMC guidance). Consult the standard’s normative references for specific cross‑references.

Keywords

electromagnetic shielding, shielding effectiveness, glazing, coated glass, filmed glazing, laminated glass, EMI, EMC testing, radio frequencies, magnetic field, plane wave, test method, transmittance, glazing configuration

FAQ

Q: What is this standard?

A: ASTM F3057‑21 is a Standard Test Method that defines how to measure the electromagnetic shielding effectiveness (SE) and EMI transmittance of glazing materials and glazing configurations at the component level.

Q: What does it cover?

A: It covers measurement procedures, required frequency ranges (100 kHz–20 GHz), source‑field types (magnetic, electric, plane wave), specimen mounting/size guidance, and reporting practices to ensure repeatable SE results for glazings and glazing configurations.

Q: Who typically uses it?

A: Glass and glazing manufacturers, independent EMC/EMI test laboratories, façade/window designers, security/EM integration engineers, and specification writers who need component‑level shielding data use this standard.

Q: Is it current or superseded?

A: F3057‑21 is the active current edition (published October 15, 2021; ASTM indicates the document as active with a last‑updated record in November 2021). It revises earlier editions (F3057‑16 and F3057‑14).

Q: Is it part of a series?

A: It is part of ASTM Committee F12 (Windows, Doors, Skylights, and Curtain Walls) work and specifically developed by subcommittee F12.10. It also belongs to the family of EMI/EMC test methods and glazing performance standards; prior editions of F3057 form the historical series for this test method.

Q: What are the key keywords?

A: Electromagnetic shielding, shielding effectiveness, glazing, EMI, EMC, coatings, filmed glazing, laminated glass, radio frequencies, test method.