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Hastelloy C22

HASTELLOY C-22 alloy is a versatile nickel-chromiummolybdenum-tungsten alloy with better overall corrosion resistance than other Ni-Cr-Mo alloys available todayCharacteristics .C-22 alloy has outstanding resistance to pitting, crevice corrosion, and stress corrosion cracking.

Chemical Composition

C

Cr

Co

Fe

Mn

Mo

Ni

P

.010 max

20-22.5

2.5 max

2.0-6.0

.50 max

12.5-14.5

Balance

.02 max

Si

S

W

V

.08 max

.02 max

2.5-3.5

.35 max






Physical Performance

Density

8.94 g/cm3



Smelt

1325-1370



Heat
Treatment

T*S

Y*S

El

Rm N/mm2

RP0.2N/mm2

A5 %

Hastelloy
C-22

690

283

40


Standard of execution:

Form

                    ASTM

Rod

                    B 574

Plate, sheet and strip

                    B 575

Seamless pipe and tube

                    B 622

Welded pipe

                    B 619, B 775

Welded tube

                    B 626, B 751

Welding fitting

                    B 366

Forged or rolled pipe flange and forged fitting

                    B 462

Billet and bar for reforging

                    B 472

Forging

                    B 564


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

Applications of Hastelloy C22:
Pharmaceutical industries use alloy C-22 fittings and tubing to avoid contamination caused by corrosion related failures
Cellophane manufacturing
Chlorination systems
Pesticide production
Incineration scrubber systems
Chemical process industry in equipment like flue gas scrubbers, chlorination systems, sulfur dioxide scrubbers, pulp and paper bleach plants, pickling systems, and nuclear fuel reprocessing
Waste water processing

In what forms is Hastelloy C22 Available at Taixin?
Sheet
Plate
Bar
Pipe & Tube (welded & seamless)
Fittings
Wire


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