Page 639 - Corrosion Engineering Principles and Practice

600 C h a p t e r 1 4 P r o t e c t i v e C o a t i n g s 601

C 5-M 11 9 14 12 15 12 15 14 12 14 17 17 15 12 16 18 22

C 5-I 11 9 14 12 15 12 15 14 12 14 17 17 15 12 16 17 22

C 3 14 12 17 18 21 17 23 20 17 18 23 23 21 17 22 24 27

C 2 20 18 21 26 30 24 32 29 27 26 32 32 30 24 33 34 39
DFT 2.0 2.3 4.1 1.8 2.8 1.8 2.8 2.3 0.8 1.8 2.8 2.8 2.3 1.5 1.3 2.3 3.3

Number of Coats 3 3 2 2 3 2 3 3 1 2 3 3 3 3 1 2 3

Surface Preparation Blast Blast Blast Blast Blast Blast Blast Blast Blast Blast Blast Blast Blast Blast Blast Blast Blast

Coating Systems for Atmospheric Exposure (primer/midcoat/to coat) Epoxy/epoxy/polyurethane Epoxy zinc/epoxy/epoxy Epoxy zinc/polyurethane Epoxy zinc/polyurethane/polyurethane Epoxy zinc/epoxy/polyurethane IOZ/polyurethane/polyurethane IOZ/epoxy/polyurethane IOZ/waterborne acrylic Zinc metalizing (minimum 90%

Inorganic zinc (IOZ)
Epoxy waterborne
Epoxy zinc/epoxy
IOZ/epoxy/epoxy
Coal tar epoxy
IOZ/epoxy

(continued)

Type Epoxy Epoxy Epoxy Epoxy Zinc Epoxy Zinc Epoxy Zinc Epoxy Zinc Epoxy Zinc Inorganic Zinc Inorganic Zinc Inorganic Zinc Inorganic Zinc Inorganic Zinc Inorganic Zinc Metalizing Metalizing Metalizing TABLE 14.2