ASTM G154-23 PDF

Full title and description

ASTM G154-23 — Standard Practice for Operating Fluorescent Ultraviolet (UV) Lamp Apparatus for Exposure of Materials. This practice provides procedures for operating laboratory fluorescent UV lamp weathering devices to expose nonmetallic materials to controlled cycles of UV radiation, heat, and moisture (typically condensation) to evaluate changes in physical and aesthetic properties.

Abstract

ASTM G154-23 describes the principles and recommended operating procedures for fluorescent UV (QUV-style) accelerated weathering apparatus. It covers lamp types, irradiance control, temperature control, condensation/moisture cycles, specimen placement, calibration, and reporting of operating conditions. The practice is intended to be used together with material-specific test methods or evaluation criteria and is not a standalone pass/fail specification.

General information

• Status: Active (current edition).
• Publication date: Current edition approved January 1, 2023 (document updated January 27, 2023).
• Publisher: ASTM International.
• ICS / categories: 19.040 (Environmental testing; durability / weathering of materials).
• Edition / version: G154-23 (designation indicates 2023 revision).
• Number of pages: 12 pages.

Scope

This practice is limited to the principles for operating fluorescent UV lamp and water (condensation) apparatus for exposure of materials and to procedures for obtaining, measuring, and controlling exposure conditions. It is intended to reproduce weathering effects caused by sunlight (direct or through glass) combined with moisture and heat, and is intended for use with specific test methods or evaluation procedures that define exposure conditions, durations, and acceptance criteria. It is not intended for corrosion testing of bare metals and does not address all safety concerns associated with device operation.

Key topics and requirements

• Types of fluorescent UV lamps (commonly UVA-340 and UVB-313) and their intended spectral ranges.
• Control and measurement of irradiance (for example at 340 nm) and recommended irradiance ranges for typical cycles.
• Temperature control: black-panel and chamber temperatures, and recommended setpoints for common cycles.
• Moisture introduction methods: condensation (dark cycle) procedures and timing (typical UV/condensation cycles such as 8 h UV / 4 h condensation examples).
• Specimen preparation, placement, and recommended use of control/reference materials alongside test specimens.
• Calibration, instrument verification, and instrument-to-instrument reproducibility considerations.
• Reporting requirements: full disclosure of exposure conditions, lamp type/age, irradiance, temperatures, cycle timing, and number of replicates.
• Limitations: not intended to simulate localized weather phenomena (pollution, biological attack, saltwater) or replace field testing; results are comparative unless correlations are established.

Typical use and users

ASTM G154-23 is used by materials laboratories, quality control teams, product development engineers, coatings and polymer formulators, and accelerated weathering service providers. Typical applications include comparative durability testing of coatings, paints, plastics, composites, adhesives, and other nonmetallic components to evaluate colorfastness, chalking, cracking, gloss loss, and other degradation phenomena under controlled accelerated UV/condensation exposure.

Related standards

Commonly referenced or complementary standards and guides include: ASTM G151 (general practice for exposing nonmetallic materials in accelerated light-source devices), ASTM G113 (terminology for natural and artificial weathering), ASTM G155 (xenon-arc exposure for materials), ISO 4892-1 and ISO 4892-3 (exposure to laboratory light sources / xenon-arc and fluorescent UV guidance), ISO 16474-3, ISO 4582, and ASTM D5870. Practice-specific methods or material standards should be used in conjunction with G154 for specimen preparation and evaluation.

Keywords

accelerated weathering, fluorescent UV, QUV, UV exposure, condensation, laboratory weathering, irradiance, black-panel temperature, durability testing, coatings, plastics, nonmetallic materials

FAQ

Q: What is this standard?

A: ASTM G154-23 is a standard practice that provides procedures for operating fluorescent ultraviolet (UV) lamp apparatus for accelerated exposure of materials to simulate weathering effects of sunlight, moisture, and heat.

Q: What does it cover?

A: It covers lamp types and spectra, irradiance and temperature control, condensation/moisture cycles, specimen placement, calibration and verification, reporting requirements, typical exposure cycles, and the limitations of laboratory fluorescent-UV accelerated exposures.

Q: Who typically uses it?

A: Materials test laboratories, manufacturers, R&D and quality groups in coatings, plastics, automotive, construction materials, and third‑party weathering service providers use this practice for accelerated comparative durability testing.

Q: Is it current or superseded?

A: This is the current edition designated G154-23 (approved in 2023) and is active. Previous editions include G154-16 and earlier revisions; users should adopt the G154-23 text for current procedural guidance.

Q: Is it part of a series?

A: Yes. G154 is part of the ASTM G03 committee’s suite of weathering and durability practices and is commonly used alongside related practices such as G151 and G155 and international standards like ISO 4892 parts that address laboratory light-source exposures.

Q: What are the key keywords?

A: Key keywords include fluorescent UV, accelerated weathering, QUV, irradiance, condensation, black-panel temperature, coatings, plastics, durability, and laboratory weathering.