Hastelloy C material datasheet


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: Recommend

△: Must confirm if usable by testing advanced. 

 X: Not recommend

» This chart only provide result of single chemical to material, if client use more than one kinds of chemical in the same time, please choose material by experience.

» This chart is for reference which not able to be applicable to all environment. Please design equipment according to practical experience.

 

Catagory Chemical Hastelloy C
Organic acids Acetic acid OK (20%)
Acetic acid, glacial  OK
Acetic anhydride OK
Citric acid OK
Organic compound   Acetaldehyde OK
 Acetone OK
Alcohol:methyl
OK
Aniline
OK
 Benzene OK
Ethanol
OK
Ethylene glycol
OK
Fatty acid
OK
Formaldehyde
OK (40%)
Formic acid
OK
Lactic acid
OK
Methanol
OK
 Phenol OK (<50°C) 
 Propanol OK
Stearic acid
OK
Tartaric acid
OK
Urea

Inorganic compound Ammonia
OK
Ammonium chloride
OK
Ammonium hydroxide
OK
Ammonium nitrate
OK
Ammonium sulfate
OK
Aqua regia
X
Barium chloride
OK
Barium hydroxide
OK
Brine
OK
Calcium Chloride
OK
Calcium hydroxide
OK
Carbonic acid
OK
Chloric acid
OK
Chlorine OK
Hydrogen peroxide
OK (30%)
Nitric acid
OK (5%)
Phosphoric acid
OK
Potassium hydroxide
OK
Potassium nitrate
OK
Potassium sulfate
OK
Sodium nitrate
OK 
Sulfuric acid

OK (40% @ <80°C) OK (90%)

Sulfur dioxide
OK

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