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Chemical resistance PEEK

This linear aromatic polymer is semi-crystalline and is widely regarded as the highest performance thermoplastic material currently available. PEEK polymer is widely regarded as a material with superb chemical resistance.

Note: The chemical resistance of each polymer is mainly determined by the chemical structure of the material and the strength of the weakest link in this specific structure.

Chart codes

R - Resistant
LR - Limited Resistance
NR - Not Recommended
ND - No Data

Actual properties may change due to processing method, compound type, extruded dimensions and other variables. It is the user's responsibility to evaluate and fully test the suitability of the product for their specific application.

Chemical Resistance
  20°C/68°F 60°C/140°F 100°C/212°F
Acetaldehyde NR NR R
Acetic acid (10%) R R R
Acetic acid (glac./anh.) R R NR
Acetic anhydride ND ND ND
Aceto-acetic ester ND ND ND
Acetone R R R
Other ketones R R R
Acetonitrile ND ND ND
Acetylene R R R
Acetyl salicylic acid ND ND ND
Acid fumes R R R
Alcohols R R R
Aliphatic esters R R R
Alkyl chlorides ND ND ND
Alum R R R
Aluminium chloride R R R
Aluminium sulphate R R R
Ammonia, anhydrous R R R
Ammonia, aqueous R R R
Ammonium chloride R R R
Amyl acetate R R R
Aniline R R R
Antimony trichloride ND ND ND
Aqua regia R R ND
Aromatic solvents R R R
Ascorbic acid ND ND ND
Beer R R R
Benzaldehyde ND ND ND
Benzene R R R
Benzoic acid R R R
Benzoyl peroxide ND ND ND
Boric acid R R R
Brines, saturated R R R
Bromide (K) solution R R R
Bromine NR NR NR
Bromine liquid, tech. NR NR NR
Bromine water, saturated aqueous R R R
Butyl acetate ND ND ND
Calcium chloride R R R
Carbon disulphide R R R
Carbonic acid R R R
Carbon tetrachloride R R R
Caustic soda & potash R R R
Cellulose paint ND ND ND
Chlorates of Na, K, Ba R R R
Chlorine, dry R R ND
Chlorine, wet R R R
Chlorides of Na, K, Ba R R R
Chloroacetic acid R R R
Chlorobenzene R R R
Chloroform R R R
Chlorosulphonic acid R ND ND
Chromic acid (80%) R ND ND
Citric acid R R R
Copper salts (most) R R R
Cresylic acids (50%) R R ND
Cyclohexane R R R
Detergents, synthetic R R R
Emulsifiers, concentrated R R R
Esters ND ND ND
Ether R R R
Fatty acids (>C6) R R R
Ferric chloride R R R
Ferrous sulphate R R R
Fluorinated refrigerants R R R
Fluorine, dry R R R
Flourine, wet ND ND ND
Fluorosilic acid ND ND ND
Formaldehyde (40%) R R R
Formic acid R R R
Fruit juices R R R
Gelatine R R R
Glycerine R R R
Glycols R R R
Glycol, ethylene R R R
Glycolic acid R R R
Hexamethylene diamine R R R
Hexamine R R R
Hydrazine R R ND
Hydrobromic acid (50%) ND ND ND
Hydrochloric acid (10%) R R R
Hydrochloric acid (conc.) R R ND
Hydrocyanic acid R R R
Hydrofluoric acid (40%) ND ND ND
Hydrofluoric acid (75%) ND ND ND
Hydrogen peroxide (30%) R R R
Hydrogen peroxide (30 - 90%) R R ND
Hydrogen sulphide R R R
Hypochlorites R ND ND
Hypochlorites (Na 12-14%) NR NR NR
Iso-butyl-acetate ND ND ND
Lactic acid (90%) R R R
Lead acetate R R R
Lead perchlorate ND ND ND
Lime (CaO) R R R
Maleic acid R R R
Manganate, potassium (K) R R R
Meat juices R R R
Mercuric chloride R R R
Mercury R R R
Methanol R R R
Methylene chloride ND ND ND
Milk products R R R
Moist air R R R
Molasses R R R
Monoethanolamine ND ND ND
Naptha R R R
Napthalene R R R
Nickel salts R R R
Nitrates of Na, K and NH3 R R R
Nitric acid (<25%) R R R
Nitric acid (50%) R R R
Nitric acid (90%) NR NR NR
Nitric acid (fuming) NR NR NR
Nitrite (Na) R R R
Nitrobenzene ND ND ND
Oils, diesel R R R
Oils, essential R R R
Oils, lubricating + aromatic additives R R R
Oils, mineral R R R
Oils, vegetable and animal R R R
Oxalic acid R R R
Ozone R R R
Paraffin wax R R ND
Perchloric acid R R R
Petroleum spirits ND ND ND
Phenol R R R
Phosphoric acid (20%) R R R
Phosphoric acid (50%) R R R
Phosphoric acid (95%) R R R
Phosphorous chlorides R R R
Phosphorous pentoxide ND ND ND
Phthalic acid R R R
Picric acid R R R
Pyridine R R R
Salicyl aldehyde ND ND ND
Sea water R R R
Silicic acid R R R
Silicone fluids R R R
Silver nitrate R R R
Sodium carbonate R R R
Sodium peroxide R R R
Sodium silicate R R ND
Sodium sulphide R R R
Stannic chloride R R R
Starch R R R
Sugar, syrups & jams R R ND
Sulphamic acid ND ND ND
Sulphates (Na, K, Mg, Ca) R R R
Sulphites R R R
Sulphonic acids ND ND ND
Sulphur R R R
Sulphur dioxide, dry R R R
Sulphur dioxide, wet R R R
Sulphur dioxide (96%) R R ND
Sulphur trioxide R R R
Sulphuric acid (<50%) R ND ND
Sulphuric acid (70%) R R R
Sulphuric acid (95%) NR NR NR
Sulphuric acid, fuming NR NR NR
Sulphur chlorides R R R
Tallow R R R
Tannic acid (10%) R R R
Tartaric acid R R ND
Trichlorethylene R R R
Urea (30%) R R R
Vinegar R R R
Water, distilled. R R R
Water, soft R R R
Water, hard R R R
Wetting agents (<5%) R R R
Yeast R R R
Zinc chloride R R R

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