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Hastelloy B2

Hastelloy B2 is a solid solution strengthened, nickel-molybdenum alloy, with significant resistance to reducing environments like hydrogen chloride gas, and sulfuric, acetic and phosphoric acids. Molybdenum is the primary alloying element which provides significant corrosion resistance to reducing environments.

Chemical Composition

Grade

%

Ni

Cr

Mo

Fe

Co

Hastelloy B-2

Min

Rest


26



Max

1

30

2

1

C

Mn

Si

V

P

S




0.2



0.02

1

0.1

0.4

0.04

0.03


Physical Performance

Density

9.24 g/cm3



Smelt

1330-1380



Heat
Treatment

T*S

Y*S

El

Rm N/mm2

RP0.2N/mm2

A5 %

Hastelloy
C-22

690

310

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 B2:
Great resistance to stress corrosion cracking and pitting
Significant resistance to reducing conditions like hydrogen chloride, sulfuric, acetic and phosphoric acids
Resistance to hydrochloric acid at all concentrations and temperatures


Applications of Hastelloy B-2:
Chemical processes
Vacuum furnaces
Mechanical components in reducing environments


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