Accelerated UV Test as per ASTM G154

The ASTM G154 standard was created to simulate the conditions in which your products will be used, such as sunlight and moisture levels. You can adjust your design as needed after learning how much light or moisture your product can withstand before putting it on the market. If you're looking for a test lab that can deliver high-quality accelerated UV test results on time, Infinitalab is here to help.

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Overview
Scope, Applications, and Benefits
Test Process
Specifications
Instrumentation
Results and Deliverables

Overview

ASTM G154 is an accelerated weathering test method that uses standardized procedures to expose non-metallic materials to ultraviolet (UV) radiation, moisture, and heat to assess durability and weatherability. The test simulates environmental damage from sunlight, condensation, and temperature, and should be used to predict the performance of materials over time.

ASTM G154 is typically run alongside ASTM G155, but the significant difference between the two is that ASTM G154 uses fluorescent UV lamps, whereas ASTM G155 uses xenon arc lamps. This test procedure is well-suited for materials such as coatings, plastics, and polymers, which are sensitive to UV exposure and environmental aging.

Scope, Applications, and Benefits

Scope

ASTM G154 outlines procedures for simulating the degradation caused by sunlight, moisture, and heat using controlled laboratory conditions.
It evaluates:

Resistance to UV radiation
Effects of moisture and condensation
Changes in physical and visual properties due to weathering

Fluorescent UV lamps are used to reproduce specific portions of the solar spectrum and moisture cycles.

Applications

Durability testing of protective and decorative coatings
Weatherability evaluation of plastics and polymers
Performance assessment of automotive exterior and interior components
Long-term exposure testing of construction materials such as roofing, siding, and window components
Quality control and product development for UV-sensitive materials

Benefits

Provides accelerated simulation of outdoor weathering
Enables comparison of material formulations
Helps predict service life under UV exposure
Supports product development and material selection
Ensures repeatable and standardized test results

Test Process

Specimen Preparation

Samples are prepared to suitable dimensions, commonly around 75 × 150 mm, ensuring uniform surfaces and defect-free edges.

UV Exposure Setup

Specimens are placed in a chamber equipped with fluorescent UV lamps (UVA or UVB) and temperature control

Cyclic Weathering

Samples undergo programmed cycles of UV exposure and moisture (condensation), such as 8 hours of UV followed by 4 hours of condensation.

Evaluation & Data Collection

After exposure, specimens are evaluated for color changes, cracking, chalking, loss of gloss, and other degradation indicators.

Technical Specifications

Parameter	Details
Test Principle	Accelerated UV exposure using fluorescent lamps with moisture and heat cycles
Light Source	Fluorescent UV lamps (UVA-340, UVB-313)
Exposure Cycles	UV radiation followed by condensation
Sample Types	Coatings, plastics, polymers, non-metallic materials
Typical Sample Size	~75 × 150 mm (modifiable as required)
Test Duration	Hundreds to thousands of hours, depending on the material and the test objective

Instrumentation Used for Testing

Accelerated UV weathering chambers
Fluorescent UVA and UVB lamps
Temperature-controlled enclosures
Condensation and moisture generation systems
Exposure monitoring and data logging software

Results and Deliverables

Visual and physical degradation assessment
Comparison against unexposed control samples
Documentation of color fade, cracking, chalking, and gloss loss
Evaluation of UV and moisture resistance
Suitability assessment for indoor, outdoor, or shaded applications

Why Choose Infinita Lab for ASTM G154?

At the core of this breadth is our network of 2,000+ accredited labs in the USA, offering access to over 10,000 test types. From advanced metrology (SEM, TEM, RBS, XPS) to mechanical, dielectric, environmental, and standardized ASTM/ISO testing, we give clients unmatched flexibility, specialization, and scale. You’re not limited by geography, facility, or methodology—Infinita connects you to the right testing, every time.

Looking for a trusted partner to achieve your research goals? Schedule a meeting with us, send us a request, or call us at (888) 878-3090 to learn more about our services and how we can support you. Request a Quote

Frequently Asked Questions

ASTM G154 and ASTM G155 are standards for accelerated weathering tests, but they differ in the type of light source used and the specific applications. ASTM G514 uses fluorescent UV lamps to simulate the effects of sunlight, particularly the UV portion of the spectrum. ASTM G155 uses a xenon arc lamp to simulate full-spectrum sunlight, including UV, visible, and infrared light.

ASTM G154 is often not utilized for metals because it is intended for nonmetallic materials such as plastics and coatings.

Moisture exposure is crucial since many materials deteriorate due to UV radiation and rain, dew, and humidity. Including moisture in the test improves the simulation of real-world weathering conditions.

Many materials can be examined, including plastics, coatings, paints, sealants, rubbers, and other nonmetallic materials used in outdoor applications.

ASTM G154 simulates UV exposure under controlled laboratory conditions and may not fully represent real outdoor environments where full-spectrum sunlight, temperature fluctuations, and environmental factors influence material degradation.