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Natural & Accelerated Weathering Services

Scab Tests

Scab tests on coated metal automotive panels are commonly performed to evaluate the cosmetic corrosion that might occur in coated metal panels that have been damaged and exposed to highly salted environments, such as road salt or coastal areas. This test is performed in accordance with ASTM D6675– “Standard Practice for Salt-Accelerated Outdoor Cosmetic Corrosion Testing of Organic Coatings on Automotive Sheet Steel.” This practice defines the procedure for preparing, exposing and applying a 5% sodium chloride solution at specified intervals to promote corrosion.

NOW Catalog - 27780 Common Applications

Open-Backed Exposure, Black Box Exposure, Under Glass and Black Box Under Glass

Paints and Coatings Plastic Lenses

(such as taillight assemblies and automotive coatings)

Indirect Weathering

Atlas
® outdoor exposure laboratories offer a variety of indirect weathering options to meet international and manufacturer- specific test programs for materials that are typically not exposed to all outdoor conditions.

Plastic and Metal Signs

Under Glass and Black Box Under Glass Exposures

Other Applications:

® Provides exposure to natural sunlight through glass

Glass Free-Films Coil Coatings

® Determines colorfastness/durability characteristics of materials such as: drapes, carpeting, upholstery and automotive interior materials

Backed Exposure

® Specimens are typically placed behind 3 mm thick, single-strength window glass

Automotive Moldings Polyvinyl Chloride (PVC) Siding Roofing Membranes

® Single-strength window glass absorbs radiation below 310 nm and transmits 77% of UV radiation and 85% of visible light
® Additional tempered, tinted or laminated glass available to match end-use application

Standards

Under Glass Black Box Under GlassAATCC Method 16 Option 6, TM111B ASTM G24 Method A G24 Method B FLTM BI 160-01 BI 160-01 GM 4349M ISO 105-B01 877
To find out more details about test programs to meet these or other specific standards, contact your local Atlas representative. Standards are subject to change without notice. This might lead to the inclusion or exclusion of certain services. Phone: +1.773.327.4520 www.atlas-mts.com

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