Metal Finishing Guide Book

2012-2013

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124 0(���4) +S 0 0 Outdoor exposure + NaCl (VDA 621-414) 1 year (mm) Chipping corrosion VW specification (% paint loss) Condensing humidity (240 hr + cross hatch (index) 0 0 0 0���3 0���9 (Filiform) 0 0���1 0 0���8 (Filiform) 0(���2) -S +S 0 0 0���1 0���1 0 -S Trication Process with Fluoride Crystalline Layer Electrogalvanize Steel 0 0 1.5 1 0 1 <1 3���6 5���9 (Trication Process + F) <1 (Trication Process + F) Steel A1MgO���4Sil���2: passivation, Cr(VI) and Cr(III): coated with cathodic paint, primer, topcoat: +S, sanded surface: S nonsanded surface 25���27 Salt spray���humidity cycle VDA 621-415 10 weeks (mm) aMaterial: 0���8 (Filiform) Salt spray test DIN 50021 1008 hr (mm) Test Method Trication Process, No Fluorides, No Crystalline Layer Aluminuma Table II. Corrosion Test Results for Aluminum Compared with Cold-Rolled Steel and Electrogalvanized Steel

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