ASTM G151 Standard Guide for Exposing Nonmetallic Materials in Accelerated Test Devices that use Laboratory Light Sources

ASTM G151 is a standard practice for exposing nonmetallic materials in accelerated test devices that use laboratory light sources. This practice provides standard requirements for laboratory exposure devices, in addition to the use and interpretation of data from accelerated exposure tests.

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<strong>ASTM G151 Standard Guide for Exposing Nonmetallic Materials in Accelerated Test Devices that use Laboratory Light Sources</strong>

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

Overview

ASTM G151 provides guidance for exposing nonmetallic materials to controlled light sources in laboratory-based accelerated weathering devices. The guide outlines general principles for simulating environmental conditions such as sunlight, temperature, and moisture to evaluate material durability.

This standard is widely used for plastics, coatings, textiles, and other nonmetallic materials to assess resistance to weathering effects. Accelerated exposure testing helps predict long-term material performance, color stability, and degradation behavior under simulated environmental conditions.

Scope, Applications, and Benefits

Scope

ASTM G151 establishes guidelines for exposing nonmetallic materials to laboratory light sources under controlled environmental conditions. The guide supports the selection of exposure parameters and evaluation of material response to simulated weathering.

ASTM G151 evaluates:

Effects of light exposure on nonmetallic materials
Material degradation due to ultraviolet and visible radiation
Influence of temperature and moisture during exposure
Color change, cracking, and surface deterioration
Durability of materials under simulated environmental conditions

Applications

Plastics and polymer materials
Coatings and paints
Textile and fabric materials
Automotive and exterior components
Building materials and finishes
Research and material development

Benefits

Provides standardized guidance for accelerated weathering tests
Helps predict long-term material performance
Supports comparison of material durability
Assists in selecting materials for outdoor applications
Enables the evaluation of environmental degradation behavior

Test Process

Sample Preparation

Nonmetallic specimens are prepared and conditioned according to the test requirements.

Exposure Setup

Specimens are placed in an accelerated weathering device with controlled light, temperature, and moisture conditions.

Light and Environmental Exposure

Materials are exposed to laboratory light sources and environmental factors for a defined duration.

Data Recording & Evaluation

Changes in material properties such as color, surface condition, and integrity are recorded and evaluated.

Technical Specifications

Parameter	Details
Applicable Materials	Nonmetallic materials including plastics, coatings, and textiles
Light Source	Laboratory-controlled light sources
Environmental Factors	Temperature, humidity, and moisture exposure
Exposure Type	Accelerated weathering conditions
Evaluation Criteria	Physical and visual material changes
Measured Outputs	Degradation, color change, and surface condition

Instrumentation Used for Testing

Accelerated weathering test chamber
Laboratory light source system
Temperature and humidity control system
Water spray or condensation system
Sample mounting fixtures
Data acquisition and monitoring system

Results and Deliverables

Material degradation assessment
Color and appearance change data
Surface condition evaluation
Environmental exposure summary
Test condition summary
ASTM compliance report

Why Choose Infinita Lab for ASTM G151?

Infinita Lab is a trusted USA-based testing laboratory offering ASTM G151 testing services across an extensive network of accredited facilities across the USA. Infinita Lab is built to serve the full spectrum of modern testing needs—across industries, materials, and methodologies. Our advanced equipment and expert professionals deliver highly accurate and prompt test results, helping businesses achieve quality compliance and product reliability.

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 G151 includes irradiance level, wavelength distribution, exposure duration, temperature, humidity, and cycle conditions, providing guidance for exposing nonmetallic materials using laboratory light sources to simulate weathering effects.

ASTM G151 covers light sources such as xenon arc, fluorescent UV lamps, and carbon arc devices, used to simulate sunlight and environmental exposure in accelerated weathering tests.

ASTM G151 is commonly applied to plastics, coatings, rubber, textiles, and other nonmetallic materials used in outdoor applications requiring evaluation of durability under light exposure.

ASTM G151 evaluates changes such as color fading, cracking, loss of mechanical properties, and surface degradation, providing insight into material durability under simulated environmental exposure conditions.

ASTM G151 provides general guidance and does not specify exact exposure conditions, requiring additional standards to define detailed test parameters for specific materials and applications.