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Chemical Compatibility

Chemical Compatibility

Partial list of the recommended valve material selections for specific fluids

Y = Yes, Excellent Compatibility    C = Use with Caution    N = No, Severe Effect towards Material

ChemicalsCarbon SteelStainless Steel 304Stainless Steel 316Alloy 20MonelHastelloy
ChemicalsCarbon SteelStainless Steel 304Stainless Steel 316Alloy 20MonelHastelloy
Acetal Dyehyde 70°FYCY-Y-
Acetic Acid <<50% to BoilingNYY-Y-
Acetic Acid 70°FNYY-Y-
Acetic Acid >>50%NNY-Y-
Acetic Anhydride to BoilingNYY-Y-
Acetone to BoilingYCY-Y-
Air(Mois) 70°FNY----
Alcohols-YY-Y-
Aluminium Hydroxide--Y-Y-
Aluminium Sulphate 70°FNYC-C-
Aminies 70°FY-Y-Y-
Ammonia (Anydrous Liquid) Ammonia Gas--Y-Y-
Ammonium Hydroxide to BoilingYCY-C-
Ammonium Bromide 70°FNYC---
Ammonium Nitrate 70°FYCY-C-
Ammonium Chloride 70°FNYC-Y-
Ammonium Triphosphate--Y-Y-
Amonia Gas--Y-Y-
Amly Acetate 70°FYCY-Y-
Amly Alcohol 70°FYCY-Y-
Antioxidants----Y-
Anyline 70°FYCY-C-
Anyline-HLC 70°FNNNY--
Aromatic Hydrocarbons----Y-
Beer & Beer Mash to 160°FNY--Y-
Benzine to BoilingYCY-Y-
Borax to 175°FYC----
Brine (Acid) 70°FNNY-C-
Bromine (Dry) 70°FNNNYYC
Bromine (Wet) 70°FNNNN-Y
Bromine Anhydrous LiquidN-N-NY
Butadiene Y----Y-
Butane----Y-
Buty Alcohol 70°FYC--Y-
Buty Acetate 70°FYC----
Butylene----C-
Calcium Hydroxide 70°FYCY-Y-
Carbonic Acid 70°FNYC---
Carbon tetrachloride to BoilingYCCYY-
Carbon Dioxide, WetC-Y---
Carbonated Water--Y---
Carbonic Acid, 70°F--Y---
Carstor Oil--Y-Y-
Chlorinated Water 70°FNNYCY-
Chlorine Gsa (Moist) 70°FNNNN-Y
Chlorine Gsa (Dry) 70°FYC----
Cider----Y-
Coal Tar--Y-Y-
Coffee to BoilingNYY---
Copper Sulphate to BoilingNYY---
Creosote HotYCY-Y-
Diphenyloxide----Y-
Dowthrem HotYC----
Ethers 70°FYCY-Y-
Ethyl Chlorode 70°FYCC-Y-
Ethyl Alcohol to BoilingYC--Y-
Ethyl Acetate 70°FYC--Y-
Ethylene Dxide 70°FYC--Y-
Ethylene Glycol 70°FYCY-Y-
Ethylene Dichloride 70°FY---Y-
FreonYC--Y-
Fruit Juice 70°FNCY-Y-
Fuel Oil HotNCYY--
Gasoline Antioxidant----Y-
Gasoline 70°F----Y-
Hydrochloric Acid >>20 70°FNNNN-Y
Hydrochloric Acid <<1/4 BoilingNNYC--
Hydrochloric Acid 1/2-2% 175°FNNNYCC
Hydrochloric Acid <<1/2% 175°FNNYCC-
Hydrochloric Acid  1/4-1% BoilingNNNY-C
Hydrochloric Acid  >>2% 175°FNNNN-Y
Hydrochloric Acid  1-20% 70°FNNNYCC
Hydrochloric Acid  1% 70°FNNYCC-
Hydrochloric Acid  >>1% BoilingNNNN-Y
Hydrochloric Acid  <<10>> 60% 70°FNNNYCC
Hydrochloric Acid  10-60% 70°FNNNNYY
Hydrochloric Acid  to BoilingNNNNYY
Hydrogen Sulphide (Dry) 70°FYCY-Y-
Hydrogen Peroxide to BoilingNYC-C-
Hydrogen Sulphide (Wet) 70°FNYC-C-
Hypochlorous Acid-----N
Isobutane--Y-Y-
Isoctane----Y-
Isopropyl Alcohol----Y-
Kerosine 70°FYC--Y-
Keytones 70°FYC----
Linspeed Oil HotYCY-Y-
Lubricating Oil HotYCY-Y-
Magnesium Hydroxide 70°FYC--Y-
Magnesium Chloride 70°FNCY-Y-
Magnesium Sulphate 70°FYCY-Y-
Methyl Alcohol HotNNYCY-
Methyl Ethyl Ketone----Y-
Milk 175°F----Y-
Mine Water (Acid) 70°FNNC-C-
Naptha 70°FYCY-Y-
Napthalene to HotNY----
Natural GasYYY-Y-
Nitric Acid to BoilingNY--N-
Nitric Acid (Fuming) 70°FNNNYN-
Nitric Acid (Fuming) to BoilingNNNN--
Nitrous Oxide 70°FNY----
Nylon Salt----C-
Oxygen--Y-Y-
Phosphoric Acide <<10% 70°FNYC-C-
Phosphoric Acide <<10% 70°FNNYCC-
Potassium Chloride 70°FNYC-Y-
Potassium Bromide 70°FNYC-C-
Potassium Sulphte 70°FYCY-Y-
Potassium Hydroxicide 70°FYCY-Y-
Potassium Triphosphate--Y-Y-
Propane Lquefied----Y-
Propane GasYYY-Y-
Propylene Dichloride 70°FY---Y-
Sea Water 70°FNYY-Y-
Silver Bromide 70°FNYC---
Sodium Aluminate 70°FYCY-Y-
Sodium Chloride 70°FNYC-Y-
Sodium TriphosphateYYYYYY
Sodium Dichomate 70°FY---Y-
Sodium Fluoride 70°FNYC-Y-
Sodium Bromide 70°FNYC---
Sodium Sulphate 70°FYCY-Y-
Sodium Salts--Y-Y-
Sodium Nitrite----Y-
Steam+CO2+SO2NY----
SteamyC-----
Sugar Liqours to 175°FNY----
Sulphursulphate LiquorsYYY-Y-
Sulphur Dioxide (Wet) 70°FNYC-Y-
Sulphur Dioxide (Dry) 575°FYC----
Sulphur (Molten)NNY-C-
Sulphuric Acide 65-85% to BoilingNNNC-Y
Sulphuric Acide 20-65% >>85% BoilingNNNN-C
Sulphuric Acide 2-40% 70°FNNYC--
Sulphuric Acide >>40% 70°FNNNY--
Toluene to BoilingYCY-Y-
Trichlorethlene to BoilingYCC-C-
Trisodium PhosphateYCC-C-
Varnish, HotNYY-Y-
Vegetable Oils 70°FYC----
Water, FreshY---Y-

Disclaimer: These charts are for materials and medium compatibility reference only. As application situation may differ, kindly consult Unimech personnel for recommendations. Unimech cannot be held liable for any damages incurred due to the use of these tables.

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