Outdoor service.
Sunlight exposure.
UV-stable.
Material selection for UV-exposed applications. Sunlight degrades many plastics. Metals UV-stable. UV-resistant plastics or stabilizers.
Key principles.
UV-stable
Aluminum, steel, stainless: UV doesn't affect.
UV-stable plastic
Acrylic naturally UV-stable. 30+ year outdoor life.
Premium UV
Premium UV-stable polymer. Architectural applications.
UV-stable
PTFE excellent UV. Inert.
UV-coated
PC degrades, but UV-coated grades 15+ year outdoor.
Stabilized
Nylon with UV stabilizer additives. Several-year outdoor.
Poor UV
Standard ABS yellows and embrittles outdoor.
Poor UV
Standard PP degrades UV. Stabilized grades available.
Paint protects
Powder coat or anodize protects substrate from UV.
FAQ
How fast does UV degrade plastic?
Per material. ABS yellows months. PP cracks 1-2 years. UV-stabilized grades extend 5-20×.
UV testing standards?
ASTM G154 (fluorescent UV), G155 (xenon arc). Accelerated weathering chambers.
Coatings for UV protection?
Powder coat protects metal. Paint with UV-stable pigment. Clear UV-block coating preserves natural appearance.
Anodize UV stability?
Type II (decorative dye) varies — black darkens, some colors fade. Type III hardcoat stable.
Outdoor color stability?
Pantone-matched powder + UV-stable pigment best. Some colors (red) less UV-stable than others.
Specifying UV-resistant?
Specify duration: "20-year outdoor". Specify environment: "industrial, salt spray". Manufacturer recommends material + finish system.
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