Hastelloy is the registered trademark name of Haynes International, Inc. The trademark is applied as the prefix name of a range of twenty-two different highly corrosion-resistant metal alloys, loosely grouped by the metallurgical industry under the material term “superalloys” or “high-performance alloys”.
The predominant alloying ingredient is typically the transition metal nickel. Other alloying ingredients are added to nickel in each of the subcategories of this trademark designation and include varying percentages of the elements molybdenum, chromium, cobalt, iron, copper, manganese, titanium, zirconium, aluminum, carbon, and tungsten.
Chemical and physical properties
The primary function of the Hastelloy super alloys is that of effective survival under high-temperature, high-stress service in a moderately to severely corrosive, and/or erosion-prone environment where more common and less expensive iron-based alloys would fail, including the pressure vessels of some nuclear reactors, chemical reactors, distillation equipment, and pipes and valves in chemical industry. Although a super alloy, Hastelloy does experience degradation due to fabricating and handling. Electropolishing or passivation of Hastelloy can improve corrosion resistance.
* Citing source: Wikipedia
Chemical resistance chart
How to use this chart
» Meaning of symbol:
OK: Recommended.
△: Must confirm if usable by testing in advanced.
X: Not recommended.
» This chart only provides the result of a single chemical to material, if a client uses more than one kind of chemical at the same time, please choose material by experience.
» This chart is for reference only which is not applicable to all working environments. Please refer to design equipment according to practical experience.
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Category
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Chemical
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Hastelloy C
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|
Organic acids
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Acetic acid
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OK (20%)
|
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Acetic acid, glacial
|
OK
|
|
Acetic anhydride
|
OK
|
|
Citric acid
|
OK
|
|
Organic compound
|
Acetaldehyde
|
OK
|
|
Acetone
|
OK
|
|
Methyl alcohol
|
OK
|
|
Aniline
|
OK
|
|
Benzaldehyde
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N/A
|
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Benzene
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OK
|
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Benzyl alcohol
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N/A
|
|
Benzyl chloride
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N/A
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Corn oil
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N/A
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Ethanol
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OK
|
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Ethylene glycol
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OK
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Fatty acid
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OK
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Formaldehyde
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OK (40%)
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Formic acid
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OK
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Hexane
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N/A
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Lactic acid
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OK
|
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Methanol
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OK
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Paraffin oil
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N/A
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Petroleum
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N/A
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Phenol
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OK (<50˚C)
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|
Propane, liq
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N/A
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Propanol
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OK
|
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Stearic acid
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OK
|
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Tannic acid
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N/A
|
|
Tartaric acid
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OK
|
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Toluene
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N/A
|
|
Urea
|
△
|
|
Inorganic compound
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Ammonia
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OK
|
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Ammonium chloride
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OK
|
|
Ammonium hydroxide
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OK
|
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Ammonium nitrate
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OK
|
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Ammonium sulfate
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OK
|
|
Aqua regia
|
X
|
|
Barium chloride
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OK
|
|
Barium hydroxide
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OK
|
|
Brine
|
OK
|
|
Calcium Chloride
|
OK
|
|
Calcium hydroxide
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OK
|
|
Carbonic acid
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OK
|
|
Chloric acid
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OK
|
|
Chlorine
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OK
|
|
Detergent
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N/A
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Hydrobromic acid
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N/A
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Hydrochloric acid
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N/A
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Hydrofluoric acid
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N/A
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Hydrogen peroxide
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OK (30%)
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|
Nitric acid
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OK (5%)
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|
Phosphoric acid
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N/A
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Potassium hydroxide
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OK
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|
Potassium nitrate
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OK
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|
Potassium sulfate
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OK
|
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Sodium carbonate
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OK
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Sodium hydroxide
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N/A
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Sodium nitrate
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N/A
|
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Sulfuric acid
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OK (40% @ <80˚C)
OK (90%)
|
|
Sulfur dioxide
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OK
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