Corrosion Resistance of Coupling Materials Chart
Caution: The following data has been compiled from generally available sources and should not be relied upon without consulting and following the specific recommendations of the manufacturer regarding particular coupling materials.
| Key: | ||||||
| 1 = Excellent | ||||||
| 2 = Good | ||||||
| 3 = Fair or Conditional | ||||||
| X = Not Satisfactory | ||||||
| * = 3 to X at high temperatures | ||||||
| Blank = No Data | ||||||
| Chemical or Material Conveyed | MAL. IRON | BRASS | BRONZE | ALUM. | S.S.304 | S.S.316 |
| Acetate, Solvents, Crude | 3 | 1 | 1 | |||
| Acetate, Solvents, Pure | 1 | 1 | 1 | 1 | 1 | |
| Acetic Acid | X | X | X | 2 | 2 | 2 |
| Acetic Acid Vapors | X | X | 3 | 2 | 2 | |
| Acetic Anhydride | X | X | 2 | 2 | 2 | |
| Acetone | 1 | 1 | 1 | 1 | 1 | 1 |
| Acetylene | 1 | 2 | 1 | 1 | 1 | |
| Alcohols | 1 | 2 | 1 | 1 | 1 | |
| Aluminum Sulfate | X | 3 | 3 | 3 | 3 | 2 |
| Alums | X | 3 | 2 | 3 | 3 | 2 |
| Ammonia Gas | 1 | X | 3 | 1 | 1 | 1 |
| Ammonium Chloride | 1 | 3 | 1* | 3 | 1 | |
| Ammonium Hydroxide | 2 | X | 2 | 1 | 1 | |
| Ammonium Nitrate | 1 | X | 2 | 1 | 1 | |
| Ammonium Phosphate(Ammoniacal) | X | 1 | 1 | |||
| Ammonium Phosphate (Neutral) | 3 | 1 | 1 | |||
| Ammonium Phosphate (Acid) | 3 | 2 | 1 | |||
| Ammonium Sulfate | 1 | 3 | 1 | 1 | ||
| Asphalt | 1 | 2 | 1 | 1 | ||
| Beer | 2 | 2 | 1 | 1 | 1 | 1 |
| Beet Sugar Liquors | 1 | 2 | 1 | 1 | 1 | |
| Benzene, Benzol | 1 | 1 | 1 | 1 | 1 | 1 |
| Benzine (Petroleum - Naptha) | 1 | 1 | 1 | 1 | 1 | |
| Borax | 2 | 2 | 1 | 1 | ||
| Boric Acid | X | 3 | 1 | 2 | 1 | |
| Butane, Butylene | 1 | 1 | 1 | 1 | 1 | 1 |
| Butadiene | 1 | 1 | 1 | |||
| Calcium Bisulfate | X | 2 | 1 | |||
| Calcium Hypochlorite | 3 | 3 | 3 | X | 3 | 2 |
| Cane Sugar Liquors | 1 | 2 | 1 | 1 | 1 | |
| Carbon Dioxide (Dry) | 1 | 1 | 1 | 1 | 1 | |
| Carbon Dioxide (Wet & Aqueous Sol) | 2 | 3 | 2 | 1 | 1 | |
| Carbon Disulfide | 2 | 3 | 2 | 1 | 1 | |
| Carbon Tetrachloride | 3 | 1 | 2 | 3 | 1 | 1 |
| Chlorine (Dry) | 2 | 2 | 2 | 1 | 2 | 2 |
| Chlorine (Wet) | X | X | 3 | X | X | 3 |
| Chromic Acid | X | X | X | 2 | 2 | |
| Citric Acid | X | 3 | 1 | X | 1 | |
| Coke Oven Gas | 1 | 3 | 2 | 1 | 1 | |
| Copper Sulfate | X | X | X | 1 | 1 | |
| Core Oils | 1 | 1 | 1 | 1 | ||
| Cottonseed Oil | 1 | 1 | 1 | 1 | 1 | 1 |
| Creosote | 2 | 3 | 1 | 1 | 1 | |
| Ethers | 2 | 1 | 1 | 1 | 1 | |
| Ethylene Glycol | 2 | 2 | 1 | 1 | ||
| Ferric Chloride | X | X | X | X | X | X |
| Ferric Sulfate | X | X | X | 1 | 1 | |
| Formaldehyde | 2 | 2 | 2 | 1 | 1 | |
| Formic Acid | X | 2 | X | 2 | 1 | |
| Freon | 3 | 1 | 1 | 1 | 1 | 1 |
| Furfurl | 1 | 2 | 1 | 1 | 1 | |
| Gasoline (Sour) | 3 | 3 | 3 | 1 | 1 | |
| Gasoline (Refined) | 1 | 1 | 1 | 1 | 1 | 1 |
| Gelatin | 1 | 3 | 1 | 1 | 1 | |
| Glucose | 1 | 1 | 1 | 1 | 1 | |
| Glue | 1 | 3 | 1 | 1 | 1 | |
| Glycerine or Glycerol | 1 | 2 | 1 | 1 | 1 | |
| Hydrochloric Acid | X | X | X | X | X | X |
| Hydrocyanic Acid | 3 | X | 1 | 1 | 1 | |
| Hydrofluoric Acid | X | 3 | 3 | X | X | X |
| Hydrogen Fluoride | 3 | X | 3 | |||
| Hydrogen | 1 | 1 | 1 | 1 | 1 | |
| Hydrogen Peroxide | X | X | 1 | 2 | 1 | |
| Hydrogen Sulfide (Dry) | 3 | 3 | 2 | 2 | 1 | |
| Hydrogen Sulfide (Wet) | 3 | 3 | 2 | 2 | 1 | |
| Lacquers and Lacquer Solvents | 3 | 2 | 1 | 1 | 1 | |
| Lactic Acid | X | 3 | 3 | 2 | ||
| Lime - Sulfur | 2 | X | 2 | 1 | 2 | |
| Linseed Oil | 1 | 1 | 1 | 1 | 1 | |
| Magnesium Chloride | 3 | 3 | X | 2 | 1 | |
| Magnesium Hydroxide | 1 | 2 | X | 1 | 1 | |
| Magnesium Sulfate | 2 | 2 | 3 | 1 | 1 | |
| Mercuric Chloride | 3 | X | X | X | 3 | |
| Mercury | 1 | X | X | 1 | 1 | |
| Milk | 3 | 3 | 1 | 1 | 1 | |
| Molasses | 2 | X | 2 | 1 | 1 | |
| Natural Gas | 1 | 2 | 1 | 1 | 1 | |
| Nickel Chloride | X | X | 3 | 2 | ||
| Nickel Sulfate | 3 | X | 2 | 1 | ||
| Nitric Acid | X | X | X | 3 | 2 | 2 |
| Oleic Acid | 2 | 3 | 1 | 2 | 1 | |
| Oxalic Acid | 3 | 3 | 2 | 2 | 1 | |
| Oxygen | 1 | 1 | 1 | 1 | 1 | 1 |
| Palmitic Acid | 1 | 3 | 1 | 2 | 1 | |
| Petroleum Oils (Sour) | 3 | 1 | 1 | |||
| Petroleum Oils (Refined) | 1 | 1 | 1 | 1 | 1 | 1 |
| Phosphoric Acid - 25% | 3 | X | 3 | 3 | 1 | |
| Phosphoric Acid - 25% - 50% | X | X | X | X | 2 | |
| Phosphoric Acid - 50% - 85% | X | X | X | X | 2 | |
| Picric Acid | 3 | X | 3 | 1 | 1 | |
| Potassium Chloride | 2 | 3 | 3 | 2 | 1 | |
| Potassium Hydroxide | 3 | X | X | 1 | 1 | |
| Potassium Sulfate | 2 | 2 | 1 | 1 | 1 | |
| Propane | 1 | 1 | 1 | 1 | ||
| Rosin (Dark) | 1 | 2 | 1 | 1 | ||
| Rosin (Light) | X | 1 | 1 | 1 | ||
| Shellac | 2 | 2 | 1 | 1 | ||
| Sludge Acid | X | X | 3 | |||
| Soda Ash (Sodium Carbonate) | 1 | 2 | X | 1 | 1 | |
| Sodium Biocarbonate | 3 | 1 | X | 1 | 1 | |
| Sodium Bisulfate | X | 3 | 3 | 1 | 1 | |
| Sodium Chloride | 2 | 3 | 2 | X | 2 | 1 |
| Sodium Cyanide | 2 | X | X | 1 | 1 | |
| Sodium Hydroxide | 3 | X | 3 | X | 2 | 2 |
| Sodium Hypochlorite | X | X | X | 3 | 2 | |
| Sodium Metaphosphate | X | 3 | 1 | 1 | 1 | |
| Sodium Nitrate | 1 | 3 | 1 | 1 | 1 | |
| Sodium Perborate | 3 | 3 | 1 | 1 | 1 | |
| Sodium Peroxide | 3 | 3 | 1 | 1 | 1 | |
| Sodium Phosphate - Alkaline | 3 | 1 | 1 | |||
| Sodium Phosphate - Neutral | 2 | 1 | 1 | |||
| Sodium Phosphate - Acid | 2 | 2 | 1 | |||
| Sodium Silicate | 1 | 3 | X | 1 | 1 | |
| Sodium Sulfate | 1 | 2 | 3 | 1 | 1 | |
| Sodium Sulfide | 1 | X | 1 | 1 | ||
| Sodium Thiosulfate (Hypo) | 3 | X | X | 1 | 1 | |
| Stearic Acid | 3 | 3 | 3 | 2 | 1 | |
| Sulfate Liquors | X | 1 | 1 | |||
| Sulfur | 2 | X | 2 | 2 | 1 | |
| Sulfur Chloride | X | X | 3 | 2 | ||
| Sulfur Dioxide (Dry) | 2 | 1 | 1 | 1 | 1 | |
| Sulfur Dioxide (Wet) | X | 2 | 1 | |||
| Sulfuric Acid - 10% | X | X | 3 | 3 | X | 2 |
| Sulfuric Acid - 10% - 75% | X | X | X | X | X | X |
| Sulfuric Acid - 75% - 95% | 3 | X | X | X | 3 | 2 |
| Sulfuric Acid - 95% | 2 | X | X | 2 | 2 | |
| Sulfurous Acid | X | X | X | 3 | 2 | |
| Tannic Acid | 3 | 3 | 1 | X | 1 | 1 |
| Tar | 1 | 2 | 1 | 1 | 1 | |
| Toluene, Toluol | 1 | 1 | 1 | 1 | 1 | |
| Trichlorethylene | 3 | 1 | 3 | 1 | 1 | |
| Turpentine | 3 | 1 | 1 | 1 | ||
| Varnish | 2 | 2 | 1 | 1 | ||
| Vegetable Oils | 1 | 2 | 1 | 1 | 1 | |
| Vinegar | 3 | 3 | 3 | 2 | 1 | |
| Water (Acid Mine Water) | 3 | X | 3 | 1 | 1 | |
| Water (Fresh) | 3 | 1 | 1 | 1 | 1 | |
| Water (Salt) | 3 | 3 | 2 | X | 2 | 2 |
| Whiskey | X | 2 | 1 | 1 | ||
| Wines | X | 2 | 1 | 1 | ||
| Xylene, Xylol | 2 | 1 | 1 | 1 | 1 | |
| Zinc Chloride | X | X | X | 2 | 1 | |
| Zinc Sulfate | 3 | 3 | 3 | 2 | 1 | |