Columbium—Cabot KBI

S = normally no attack V = variable, depending on purity X = not resistant 

Columbium has good resistance to many corrosive media, such as sulfuric, nitric, and hydrochloric acids, within certain defined limits. The accompanying table summarizes corrosion resistance of the metal. 

The following tests have been conducted with reagent grade chemicals, actual field testing could differ because of impurities. Field testing is highly recommended. 

Aliphatic esters Aliphatic halogen compounds-chloroform s s s 

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