Hastelloy C-22

Hastelloy C-22 (UNS No. N06022)

Hastelloy C-22 also known as Alloy C-22, is a versatile nickel-chromium-molybdenum alloy with better overall corrosion resistance than other Ni-Cr-Mo alloys available today. Alloy C-22 has outstanding resistance to pitting, crevice corrosion and stress corrosion cracking. It has excellent resistance to oxidizing aqueous media including acids with oxidizing agents, wet chlorine and mixtures containing nitric acid or oxidizing acids with chlorine ions. Hastelloy C-22 has outstanding resistance to both reducing and oxidizing media, and because of its versatility it can be used multipurpose plants where "upset" conditions occur frequently. Hastelloy C-22 has exceptional resistance to a wide variety of chemical process environments, including strong oxidizers such as ferric and cupric chlorides, hot contaminated media (organic and inorganic), oxidizing acid chlorides, wet chlorine, formic and acetic acids, ferric and cupric chlorides, acetic anhydride, sea water and brine and many mixed or contaminated chemical solutions, both organic and inorganic.Hastelloy C-22 resists the formation of grain boundary precipitates in the weld heat affected zone, thus making it suitable for most chemical process applications in the as-welded condition. Hastelloy C-22 is approved for construction of pressure vessels and components under ASME Boiler and Pressure Vessel Code for service up to 1250° F. Nano-Mag Technologies offer various products made from Hastelloy C-22 material including High Pressure Autoclave, Reactor, Hydrogenators, Magnetic Drives, Catalyst Filters etc. as per the requirement.
We also supply all types of Corrosion coupons in various size, custom made size, surface finish, stamped with serial number.
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Characteristics of Hastelloy C22

  • Resistant to pitting, crevice corrosion and stress corrosion cracking
  • Outstanding resistance to both reducing and oxidizing media
  • Excellent resistance to oxidizing aqueous media
  • Exceptional resistance to a wide variety of chemical process environments including strong oxidizers such as ferric acids, acetic anhydride, and seawater and brine solutions
  • Resists the formation of grain-boundary precipitates in the weld heat-affected zone
  • Excellent weldability

Chemical Composition:

Element%
Nickel:56 Balance
Chromium22
Molybdenum13
Iron3
Cobalt2.5 max.
Tungsten3
Manganese0.5 max.
Silicon0.08 max.
Carbon0.01 max.
Vanadium0.35 max.
Copper0.5 max.

Indicative Corrosion Data

ChemicalCorrosion Resistance
Alkaline & SaltsGood
Hydrochloric AcidGood
Hydrofluric AcidGood
Nitric AcidAcceptable
Organic AcidGood
Phosphoric AcidGood
SeawaterGood
Sulfuric AcidGood

Corrosion rates may vary at different concentrations and temperatures . Each user is advised to carry out their own corrosion test with sample coupon

Material Specification

Alloy/FormASMEASTMDIN
Plate, Sheet & StripSB-575B-57517750
Rod & BarSB-574B-57417753
ForgingsSB-564B-56417754
Seamless Pipe & TubeSB-622B-62217551
Welded PipeSB-619B-619-
FittingsSB-366B-366-
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EquipmentSpecification/Rating
Hastelloy C-22 Autoclave100 ml-100 ltrs, Upto 350 bar, 500°C,
Hastelloy C-22 Reactors Hastelloy C-22 Hydrogenators100ltrs-50000ltrs, Upto 150 bar, 500°C
Hastelloy C-22 Continuous Stirred Tank Reactor100 ml-100 ltrs, Upto 350 bar, 500°C,
Hastelloy C-22 Non-Stirred Pressure Vessels100 ml-100 ltrs, Upto 350 bar, 500°C,
Hastelloy C-22 Catalyst Filters for Precious MetalsAs per requirement
Hastelloy C-22 Magnetic DriveAs per requirement
Hastelloy C-22 Mini Magnetic CouplingNano-20, Nano-40, Nano-80

All Products, Product Specifications and Data are subject to change.

Some of the area of present or potential use for alloy C-22 is

  • Acetic acid/Acetic Anhydride/Acetyl oxide
  • Complex Acid/Chemical mixtures
  • Phosphoric acid applications
  • Acid dipping
  • Chlorination systems
  • Pesticide production
  • Sulfonation systems
  • Cellophane paper manufactures
  • Chloride system
  • Complicated mixed acid
  • Electrogalvanizing groove roller
  • Expansion bellows
  • Flue gas washer system
  • Geothermal well
  • Fluorine hydride furnace cleaner
  • Incineration cleaner system
  • Nuclear fuel regeneration/reprocessing
  • Pesticide manufacture
  • Phosphoric acid manufacture
  • Acid cleaning system
  • Plate heat exchanger
  • Selectivity filter system
  • Chlorine spargers
  • Circuit board etching equipment
  • Fans and blowers
  • Galvanizing line equipment
  • Gas scrubber systems
  • HF furnaces
  • Incineration systems, nuclear fuel
  • Pickling system components
  • Selective leaching systems
  • Sulphur oxide cooling towers
  • Tubular heat exchangers.