Industrial Coatings

PPG Duranar® Sunstorm® Coil Coatings


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  • Description

    The Duranar Sunstorm fluoropolymer Coatings are a two coat pearlescent mica system for aluminum and steel substrates applied with a roll coating application.

  • Chemistry

    Fluoropolymer (70% PVDF + 30% Acrylic)

  • Benefits

    • Wide palette of pearlescent mica flake color options in two layers, custom color matching available
    • Decades of proven performance
    • Outstanding gloss and color retention versus polyester technology
    • Exceptional film integrity, color fade, chalk resistance
    • Strong corrosion resistance

  • Suggested End Uses

    • Building panels
    • High-end storefronts
    • Curtain walls
    • Roof panels
    • Aluminum composite and accent trim

Product Characteristics

Product Characteristic Test Standard Aluminum substrate Coated steel substrate
Dry Film Thickness (Nominal) ASTM D1400 0.20-0.30 mil primer; 0.70-0.80 mil color/metallic; 0.45-0.55 mil clear topcoat 0.20-0.30 mil primer; 0.70-0.80 mil color/metallic; 0.45-0.55 mil clear topcoat
Gloss ASTM D523 Standard @ 60° 25-35 25-35
Gloss ASTM D523 Low gloss @ 85° <10 <10

Technical Properties

1 Coated Steel includes the following types of steel: G90 hot dip galvanized, Galvalume®, and Zincalume®. 2 Fracturing or rupturing of substrate will rupture coatings. Heavy gauge and clad steel substrates impose limitations on formability 3 Corrosion performance is dependent on properly cleaned and pretreated substrate These test results are based on methods believed to be correct and were performed on laboratory prepared panels. This document is not a guarantee of future.
Property Test Standard Aluminum substrate Coated steel substrate
Pencil Hardness ASTM D3363 F min - 2H F min - 2H
Flexibility (T-Bend)2 ASTM D4145 2 T-bend, no pick-off 2 T-bend, no pick-off
Adhesion ASTM D3359 No adhesion loss No adhesion loss
Reverse Impact ASTM D2794: 1.5 x metal thickness (aluminum); 3.0 x metal thickness (coated steel) No cracking or adhesion loss No cracking or adhesion loss
Acid Resistance ASTM D1308: 10% muriatic acid – 24 hours; 20% sulfuric acid – 18 hours No effect No effect
Acid Rain Test Kesternich SO2, DIN 50018 15 cycles minimum; No objectionable changes 15 cycles minimum; No objectionable changes
Alkali Resistance ASTM D1308: 10%, 20% NaOH, 1 hour No effect No effect
Salt Spray Resistance ASTM B117: 5% salt fog @ 95°F / 35°C None or few #8 blisters; > 1/16” scribe creep average; Passes 4,000 hrs. None or few #8 blisters; > 1/16" scribe creep average; Passes 1,000 hrs.
Humidity Resistance ASTM D714, ASTM D2247: 100% relative humidity @ 95°F / 35°C Passes 4,000 hrs; None or few #8 blisters Passes 1,500 hrs; None or few #8 blisters
Exterior Exposure (10 Years @ 45° South Florida) ASTM D2244, ASTM D4214 Max. 5 fade; Max. 8 chalk Max. 5 fade; Max. 8 chalk