Metal Finishing Guide Book


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Table IV. Physical Properties of Sheet Linings Temperature Resistance Max., OF (OC) Chemical Resistance Natural rubber Soft Semihard Hard 150 (66) 180 (82) 180 (82) Very good Very good Very good Neoprene 180 (82) Very good Butyl rubber 185 (85) Very good Chlorobutyl rubber 185 (85) Very good Type Polyvinyl chloridE Plasticized 150 (66) Excellent Plasticized rigid (2 ply) 150 (66) Excellent Chlorosulfonated polyethylene 275 (135) Very good Fluorocarbons 450 (232) Excellent ticular medium. It is recommended that the acceptability of specific linings, in specific media, be verified with the manufacturer. Chemical-Resistant Brick and Tile Linings Historically, chemical-resistant brick and tile linings go back approximately 100 years, paralleling the development of sulfuric acid, various dyestuffs, and explosives. The use of masonry construction has grown in the basic steel, metal-working, and metal-finishing industries. Chemical-resistant masonry sheathings are not to be conTable V. Chemical Resistance of Sheet Linings Medium Aluminum salts Cadmium salts Chromic acid, to 10% Copper salts Gold cyanide Hydrochloric acid Hydrofluoric acid Iron salts Magnesium salts Nickel salts Nitric acid, to 20% Perchloric acid Phosphoric acid Sodium chloride Sodium cyanide Sodium hydroxide, to 30% Sodium salts Sulfuric acid, to 20% Trichloroethylene Trisodium phosphate Zinc salts 1a R R NR R R R R R R R NR NR R R R R R R NR R R 2 R R NR R R NR NR R R R NR NR R R R R R R NR R R 3 R R NR R R R R R R R R NR R R R R R R NR R R 4 R R R R R R R R R R R C R R R R R R NR R R 5 R R R R R R NR R R R C NR R R R R R R NR R R R, recommended; C, conditional; NR, not recommended. a 1 = natural rubber���all grades; 2 = Neoprene; 3 = Butyl and chlorobutyl; 4 = polyvinyl chloride; 5 = chlorosulfonated polyethylene; 6 = fluorocarbons. 796 6 R R R R R R R R R R R R R R R R R R R R R

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