Hastelloy C-276

Hastelloy C-276 (UNS N10276)

Hastelloy C276, also known as alloy C276, is a versatile austenitic nickel-chromium-molybdenum-tungsten alloy with enhanced resistance to pitting, crevice corrosion and stress corrosion cracking. The high chromium content provides good resistance to oxidizing media while the molybdenum and tungsten content give good resistance to reducing media. This nickel steel alloy also has excellent resistance to oxidizing aqueous media including wet chlorine and mixtures containing nitric acid or oxidizing acids with chlorine ions. The alloy should be considered for use in environments where resistance to hot contaminated mineral acids, organic and inorganic chloride-contaminated media, chlorine, formic and acetic acids, acetic , acetic anhydride, sea water and brine solutions is desired. Hastelloy C 276 resists the formation of grain boundary precipitates in the weld heat-affected zone, making it a suitable for most chemical and petrochemical processing applications in the as-welded condition. Hastelloy C-276 is approved for construction of pressure vessels and components under ASME Boiler and Pressure Vessel Code for service up to 1250° F or 677°C. Nano-Mag Technologies offer various products made from Hastelloy C 276 material including High Pressure Autoclave, Reactor, Hydrogenator, Pressure vessels, Magnetic Drives, Catalyst Filters, Mini Magnetic Couplings etc. as per the requirement.
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Characteristics of Hastelloy C276

  • Excellent corrosion resistance in reducing environments
  • Exceptional resistance to strong solutions of oxidizing salts, such as ferric and cupric chlorides
  • High nickel and molybdenum contents providing good corrosion resistance in reducing environments
  • Low carbon content which minimizes grain-boundary carbide precipitation during welding to maintain resistance to corrosion in heat-affected zones of welded joints
  • Resistance to localized corrosion such as pitting and stress-corrosion cracking
  • One of few materials to withstand the corrosive effects of wet chlorine gas, hypochlorite and chlorine dioxide

Chemical Composition:

Nickel:57 Balance
Cobalt:2.5 max.
Manganese:1 max.
Vanadium:0.35 max.
Silicon:0.08 max.
Carbon:0.01 max.
Copper:0.5 max.

Indicative Corrosion Data

ChemicalCorrosion Resistance
Alkaline & SaltsGood
Hydrochloric AcidGood
Hydrofluric AcidGood
Nitric AcidFair
Organic AcidGood
Phosphoric AcidGood
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

Plate, Sheet & StripSB-575B-57517750
Rod & BarSB-574B-57417752
Seamless Pipe & TubeSB-622B-62217551
Welded PipeSB-619B-619-
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Hastelloy C-276 High Pressure Autoclave50 ml-100 litres, Upto 350 bar, 500°C
Hastelloy C-276 High Pressure Reactors Hastelloy C-276 Hydrogenators50 ml-50000 litres, Upto 150 bar, 500°C
Hastelloy C-276 Continuous Stirred Tank Reactor50 ml-100 litres, Upto 350 bar, 500°C
Hastelloy C-276 Non-Stirred Pressure Vessels50 ml-100 litres, Upto 350 bar, 500°C
Hastelloy C-276 Catalyst Filters for Precious MetalsAs per requirement
Hastelloy C-276 Magnetic DriveAs per requirement
Hastelloy C-276 Mini Magnetic CouplingNano-20, Nano-40, Nano-80

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

  • Pulp and paper industry, e.g. for digestion and bleaching vessels
  • Scrubbers and special reheaters as well as wet-operating
  • Fans for combustion and flue gas desulphurisation systems
  • Equipment and components for sour-gas service
  • Reactors for acetic acid production
  • Sulphuric acid coolers
  • Methylene diphenyl isocyanate (MDI)
  • Manufacture and processing of technically impure phosphoric acid
  • Combustion-resistant alloy for high pressure oxygen