Hastelloy C-276

 

Hastelloy C-276

C276 alloys are widely used in chemical and petrochemical fields, such as in components and catalytic systems that are exposed to chlorinated organics. This material is especially suitable for use in high temperature, inorganic and organic acids (such as formic acid and acetic acid) mixed with impurities, and seawater corrosion environment.

Chemical composition

Alloy % Nickel chromium molybdenum iron tungsten cobalt carbon manganese silicon vanadium phosphorus sulfur

Ha C Minimum allowance 14.5 15 4 3

Max 16.5 17 7 4.5 2.5 0.08 1 1 0.35 0.04 0.03

C276 Minimum Margin 14.5 15 4 3

Max 16.5 17 7 4.5 2.5 0.01 1 0.08 0.35 0.04 0.03

peculiarity

1. In oxidation and reduction state, it has excellent corrosion resistance to most corrosive media.

2. Excellent resistance to spot corrosion, crevice corrosion and stress corrosion cracking.

Metallographic structure of HastelloyC-276

C276 has a face-centered cubic lattice structure.

Corrosion resistance of HastelloyC-276

C276 alloys are suitable for a variety of chemical process industries containing oxidizing and reducing media. The high content of molybdenum and chromium make the alloy resistant to chloride ions, and the tungsten element further improves its corrosion resistance. C276 is one of the only materials that can resist the corrosion of humid chlorine, hypochlorite and chlorine dioxide solutions, and the alloy has significant corrosion resistance to high concentrations of salt chloride solutions (such as ferric chloride and copper chloride).

HastelloyC-276 Application range Application areas are:

C276 alloys are widely used in chemical and petrochemical fields, such as in components and catalytic systems that are exposed to chlorinated organics. This material is especially suitable for use in high temperature, inorganic and organic acids (such as formic acid and acetic acid) mixed with impurities, and seawater corrosion environment.

Other application areas

1. Pulp and paper industry, such as boiling and bleaching containers

2. Scrubber, reheater, wet steam fan in FGD system

3. Equipment and components operating in acidic gas environments

4. Reactor for acetic acid and acidic products

5. Sulfuric acid condenser

6. Methylene diphenyl isocyanate (MDI)

7. Production and processing of impure phosphoric acid