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Automotive Environmental Influences

Interior and exterior automotive components are exposed to various environmental influences throughout their entire life cycle: from temperature fluctuations to UV weathering and moisture.

Automobile light with plastics around

In order to avoid negative effects on the durability, UL offers extensive tests to determine environmental influences on the respective components. With standardized and customer-specific test procedures we are able to help you validate the long-term performance of automobile manufacturers using accelerated test methods. This ensures the quality of your components throughout the whole product life cycle.

Our test methods comply with most international standards and requirements of the Automobile OEMs.

Testing of resistance against ozone equipment (lights off)

Ozone Aging

The effect of ozone on plastics (thermoplastics, elastomers) can lead to the formation of cracks and consequently significantly reduce the service life of products.

Therefore, most types of rubber materials must be protected by additional antioxidants and ozone waxes. The aging of the rubber by ozone is simulated and measured within a few days in the ozone test chamber.

Standards for Ozone aging
DIN 53509, ASTM 1149, ISO 1431, VW 2.8.1 55 15 2, JIS k 6259, NF T46-019, BS 903 A43, GB 7762, PV 3305, PV 3316, or equivalent standards

Weather-o-meter at UL

Artificial Weathering (Light and Weathering)

Weather impacts the long-term behavior of polymers and coatings. Possible color, surface and mechanical changes can be simulated on test specimens as a result of controlled weathering influences.

In these tests, changes to automotive components due to weather influences are assessed. Various test methods offer the possibility of simulating the different weather conditions for interior and exterior use.

We offer test methods according to international standards as well as to automotive OEM specifications.

Standards for Weather-Ometer, Xenotest, Suntest, UV-Test
ASTM G26, ASTM G151, ASTM G155, DIN EN ISO 4892, SAE J2412, SAE J2527, VDA 75202, PV 1303, PV 3929, PV 3930, or equivalent standards

Examples of OEM specifications
exterior interior
Ford SAE J 2527 Citroën PSA D 471431
Honda specifications FORD SAE J 2412
Rover RES.30.CF.005 Nissan JASO M 346
VW PV 3902 Opel GME 60292-2-X
VW PV 3930 Peugeot PSA D 471431
Yamaha JIS D 0205 Renault PSA D 471431
  Rover RES.30.A.A.101
  Saab Sts 3159
  VW PV 1303

Information on further standards and specifications is available upon request.

Examples of international standards
exterior interior
DIN ISO 11341-1 DIN ISO 11341-2
DIN ISO 4892-2 Method A DIN 75202
ISO 105 B04 DIN EN 50014
ASTM D 2565 ISO 105 B02
ASTM G 154 ISO 4892-2 Method B
ASTM G 23 ASTM D 2565
ASTM G 26 ASTM G 154
ASTM D 4459 ASTM G 23
  ASTM G 26

Information on further standards and specifications is available upon request.

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Climate Change Test

To simulate different climatic conditions (e.g. seasons in different world climate zones), UL carries out standardized and customer-specific accelerated climate change tests of your products and components.

A cyclic climate change test (temperature and humidity) conducted in our test chambers on test specimens and finished parts simulates certain environmental stress. Weak points in exterior or heavily stressed interior components are detected early on and can be corrected.

Standards for Climate Change Testing
PV 1200, DIN 40046, IEC 60721-4, IEC 60068-2, GMW 14729, PR 303.5, PV 2005, or equivalent standards

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Thermal Aging

The aging behavior of polymeric materials can be analyzed through accelerated aging test methods, by storing specimens at different temperatures in hot-air-ovens.

The respective test specimens are removed from the ovens in determined time intervals for testing. The reduction in the material properties is used to measure the aging behavior. Typical test methods for determining these changes are mechanical, electrical and surface tests as well as optical evaluations. Other methods are possible and depend on the specific application.

Standards for Thermal Aging and Heat Resistance
IEC 60216-1, VDE 0304, UL 746 B, TPJLR.52.352, D45 1139 PSA, D45 1234 PSA, PV 3355, or equivalent standards

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