Alloy C276

Alloy C276

Alloy C276 is a Ni-Cr-Mo alloy containing W and extremely low carbon and Si contents.


Excellent resistance to a wide range of corrosive media, under oxidizing and reducing conditions

Excellent resistance to pitting, crevice corrosion, and stress corrosion cracking.

Corrosion Resistance

Alloy C276 can be used in many chemical processes with oxidizing and with reducing media. The high molybdenum and chromium contents render the alloy resistant to chloride ion attack. The tungsten content further increases this resistance. Alloy C276 is one of the few materials that is resistant to moist chlorine gas, hypochlorite and chlorine dioxide solutions. The alloy exhibits excellent resistance to concentrated solutions of oxidizing salts (such as iron (III) chloride and copper chloride).

Applications

Alloy C276 finds wide application in the chemical and petrochemical industry, for components in organic processes containing chlorides, and for catalytic systems. This material is especially suitable for use in situations where hot, contaminated mineral acids, solutions and organic acids (such as formic and acetic acid) as well as sea water are encountered.

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 applications

Material

Round Bar

Sheet

Pipe

Seamless Welded

ASTM UNS
N10276 B574 B575 B622 B619/B626

ASME SB574 SB575 SB622 SB619/SB626

JIS NW0276 H4553 H4551 H4552  

DIN 2.4819 17752 17750 17751 17751