DIN 75220 Solar Simulation: Automotive Aging Testing Services

DIN 75220 is a German norm for testing the ageing of automotive components under simulated solar radiation. Automotive components are constantly exposed to sunlight, heat, and environmental factors. 

DIN 75220 allows manufacturers to test the reaction of materials to artificial sunlight in a laboratory rather than wait for outdoor test results. The test is widely used by automotive manufacturers, component suppliers, polymer suppliers, and material research labs.

Why is Solar Ageing Testing Important?

Automotive components are continuously exposed to:

• Intense sunlight
• Heat buildup inside vehicles
• UV radiation
• Long-term environmental stress

These factors can cause:

• Colour fading
• Surface cracking
• Loss of mechanical strength
• Warping or deformation
• Material interaction issues in assemblies

DIN 75220 helps manufacturers:

• Evaluate long-term durability
• Validate material compatibility within assemblies
• Ensure interior and exterior performance
• Prevent premature product failure
• Meet automotive quality standards

Without proper solar simulation testing, components may fail prematurely, leading to warranty issues and safety concerns.

How is the DIN 75220 Test Performed?

The procedure normally involves the following steps:

1) Specimen selection

We pick whole components, assemblies, or material specimens. This method is most effective for complex components or whole tools.

2) Positioning in the solar simulation chamber

The specimen is placed in a solar simulation system that simulates artificial global radiation.

3) Exposure to artificial radiation

The specimen is subjected to artificial spherical radiation that simulates natural sunlight. The spectral distribution is in line with the standards outlined in CIE literature (such as CIE 20 and CIE 85).

4) Controlled environmental conditions

We control temperature, radiation intensity, and exposure time to simulate actual vehicle operating conditions.

5) Evaluation

The component is evaluated after exposure for:

• Visible changes
• Colour differences
• Surface wear or degradation
• Cracking or distortion
• Functional performance

How Does DIN 75220 Work?

The DIN 75220 uses a solar simulation system that simulates the natural global solar irradiance in a laboratory environment. 

The light source is modelled after the sun’s spectrum, enabling accelerated ageing tests to be conducted in a shorter time than outdoor tests.

The standard defines:

• Radiation intensity
• Spectral distribution requirements
• Exposure duration
• Environmental temperature conditions
• Evaluation criteria

The test is particularly useful for analysing the behaviour of various materials combined in one automotive assembly because it focuses on complete assemblies.

What Materials Does DIN 75220 Apply To?

DIN 75220 is primarily used for automotive materials such as:

• Thermoplastics
• Thermosetting plastics
• Coated components
• Interior trim materials
• Exterior polymer parts
• Multi-material assemblies

In the automotive industry, the importance of testing is apparent for components such as dashboards, door panels, consoles, and exterior trims, which must retain their appearance and functionality even after prolonged exposure to the sun.

Why Do Industries Use DIN 75220?

Industries rely on DIN 75220 because solar radiation can significantly affect:

• Mechanical strength
• Surface quality
• Material compatibility
• Dimensional stability
• Colour retention

Monitoring solar ageing performance helps manufacturers:

• Validate product durability
• Reduce field failures
• Improve material selection
• Ensure compliance with automotive specifications
• Maintain brand quality standards

Advantages of DIN 75220 Testing

Using DIN 75220 offers several benefits:

Accelerated Results – Simulates long-term sunlight exposure in a shorter timeframe.
Controlled Conditions – Ensures repeatable and reliable testing.
Assembly Testing – Suitable for complex parts and complete components.
Material Interaction Analysis – Identifies compatibility issues between materials.
Quality Assurance – Supports automotive durability validation.

Related Testing Methods

Other standards related to environmental and ageing evaluation include:

• ISO 4892 – Plastics exposure to laboratory light sources.
• ASTM G155 – Xenon arc light exposure for nonmetallic materials.
• SAE J1960 – Accelerated exterior weathering of automotive materials.

These standards, along with DIN 75220, help ensure that automotive materials meet required durability and performance specifications.

Conclusion

DIN 75220 is a key standard for evaluating the ageing of automotive components under simulated solar radiation. By simulating natural sunlight in a laboratory environment, manufacturers can evaluate the long-term durability and reliability of components.

 This testing procedure is very important for ensuring that both the interior and exterior of an automobile remain of good quality.

Why Choose Infinita Lab for DIN 75220?

With Infinita Lab (www.infinitalab.com), you are guaranteed a Nationwide Network of Accredited Laboratories spread across the USA, the best Consultants from around the world, Convenient Sample Pick-Up and Delivery, and Fast Turnaround Time. 

Our team understands the stakes and subtleties of every test. Whether you’re validating a new Product, de-risking a prototype, or navigating complex compliance requirements, our specialists guide the process with rigour and clarity.  

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 (FAQs)