• Nickel Based corrosion resistance Alloy

HASTELLOY® C-4 alloy (UNS N06455) is the most (microstructurally) stable of the widely used nickel-chromium-molybdenum materials, which are well known for their resistance to many aggressive chemicals, in particular hydrochloric acid, sulfuric acid, and chlorides. This stability means that the alloy can be welded without fear of sensitization, i.e. the nucleation and growth of deleterious, second phase precipitates in the grain boundaries of the weld heat-affected zone (HAZ).

Like other nickel alloys, it is ductile, easy to form and weld, and possesses exceptional resistance to stress corrosion cracking in chloride-bearing solutions (a form of degradation to which the austenitic stainless steels are prone). With its high chromium and molybdenum contents, it is able to withstand both oxidizing and non-oxidizing acids, and is resistant to pitting and crevice attack in the presence of chlorides and other halides.

• Chemical Properties of Hastelloy C-4 Bar

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• ​Application

Some typical applications are:

• Strong oxidizers (such as ferric and cupric chlorides)
• Hot contaminated media (organic and inorganic)
• Chlorine
• Formic and acetic acids
• Acetic anhydride
• Seawater and brine solutions

• Type we could offer

ASTM	Alloy	Type	UNS	Misc./Shape
ASTM B574 Bar	Hastelloy C-4	Nickel	N06455	Bar
ASTM B575 Plate	Hastelloy C-4	Nickel	N06455	Plate
ASTM B575 Strip	Hastelloy C-4	Nickel	N06455	Strip
ASTM B575 Sheet	Hastelloy C-4	Nickel	N06455	Sheet
ASTM B619 Welded Pipe	Hastelloy C-4	Nickel	N06455	Welded Pipe
ASTM B622 Seamless Tubing	Hastelloy C-4	Nickel	N06455	Seamless Tubing
ASTM B366 Fittings	Hastelloy C-4	Nickel	N06455	Fittings
ASTM B574 Wire	Hastelloy C-4	Nickel	N06455	Wire