The time cycle of xenon lamp aging varies depending on the testing purpose, material type, and industry standards, usually ranging from hundreds to thousands of hours. It can be divided into the following situations:

1、 Divided by testing purpose

Quick screening test

Cycle: 200-500 hours

Applicable scenario: In the early stage of product development, it is used to quickly compare the differences in weather resistance between different formulas or processes. For example, to test the effect of different titanium dioxide content on the anti fading ability of coatings, a formula with better performance can be preliminarily screened through 200 hours of aging.

Conventional performance verification

Cycle: 500-1500 hours

Applicable scenarios: Conventional testing in accordance with industry standards (such as GB/T 16422.2, ASTM G155), simulating the natural aging effect of materials outdoors for 1-5 years. For example, exterior wall coatings for buildings usually need to undergo a 1000 hour xenon lamp aging test to ensure that they do not fade or pulverize significantly within 5 years of actual use.

Long term durability assessment

Cycle: 1500-3000 hours or more

Applicable scenarios: For materials with weather resistance requirements (such as automotive coatings, aerospace materials), it is necessary to simulate outdoor aging effects for more than 10 years. For example, original car paint may need to undergo a 2000 hour xenon lamp aging test to verify its long-term stability in the climate.

2、 Divided by material type

Coatings and Coatings

Architectural coatings: typically tested for 1000-2000 hours, corresponding to 5-10 years of outdoor use.

Automotive coatings: need to be tested for 2000-3000 hours to cope with high temperature, high humidity, and UV radiation environments.

Industrial anti-corrosion coatings: The testing cycle is adjusted according to the usage scenario, such as marine environment coatings, which may require more than 3000 hours.

plastic products

General plastics (such as PVC, PE): tested for 500-1000 hours, simulating 3-5 years of outdoor aging.

Engineering plastics (such as PC, ABS): Tested for 1000-2000 hours, suitable for high demand scenarios such as automotive interiors and outdoor equipment.

Textiles and Rubber

Outdoor textiles (such as sunshades, advertising fabrics): Test for 500-1000 hours to evaluate color fastness and strength attenuation.

Rubber seals: Test for 1000-1500 hours to verify their anti cracking performance under ultraviolet radiation.

3、 Industry standard reference

GB/T 16422.2 (China)

The typical cycle for plastic xenon lamp aging testing is 1000 hours, corresponding to 3-5 years of natural aging outdoors.

ASTM G155 (USA)

Automotive paint testing typically requires over 2000 hours and simulates outdoor use for over 10 years.

ISO 11341 (International)

The aging test cycle of xenon lamp coating is 1000-2000 hours, depending on the material usage environment.

4、 Conversion relationship of time period

The conversion between xenon lamp aging time and natural aging time needs to consider the following factors:

Light intensity: Xenon lamp irradiance is usually 5-20 times that of natural light (such as 550W/㎡ vs. about 100W/㎡ of natural light).

Temperature and humidity cycle: The equipment can simulate complex conditions such as day night temperature difference, rain and snow erosion, etc., accelerating material aging.

Typical conversion ratio:

200-500 hours xenon lamp aging ≈ 1-2 years natural aging (general material screening).

1000 hours of xenon lamp aging ≈ 3-5 years of natural aging (routine performance verification).

2000 hours of xenon lamp aging ≈ 8-10 years of natural aging (long-term durability evaluation).

5、 Practical operational suggestions

Clear testing purpose: Select the appropriate cycle based on the product usage scenario (such as outdoor/indoor, short-term/long-term).

Reference industry standards: Prioritize following testing standards required by customers or regulatory agencies (such as ASTM G155 for the automotive industry).

Combining material characteristics: Materials with poor weather resistance, such as rutile titanium dioxide coatings, require extended testing cycles to fully expose potential issues.

Staged testing: For high-value materials (such as aerospace coatings), rapid testing for 500 hours is feasible, and the decision to extend the cycle is made based on the results.