Hastelloy  B3
Hastelloy B3
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Hastelloy B3
Hastelloy B-3 alloy is an additional member of the nickel-molybdenum family of alloys with excellent resistance to hydrochloric acid at all concentrations and temperatures. It also withstands sulfuric, acetic, formic and phosphoric acids, and other nonoxidizing media. B-3 alloy has a special chemistry designed to achieve a level of thermal stability greatly superior to that of its predecessors, e.g. HASTELLOY B-2 alloy. B-3 alloy has excellent resistance to pitting corrosion, to stress-corrosion cracking and to knife-line and heat-affected zone attack.
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  • Introduction
  • PARAMETER
  • Applications
Chemical Composition:

Grade

%

Ni

Cr

Mo

Fe

W

Co

B3

Min

65

1

27

1

-

-

Max


3

32

3

3

3

C

Mn

Si

V

P

S

Cu

-

-

-

-

-

-

-

0.01

3

0.1

0.2

0.03

0.1

0.2

AL

Ti

Nb

Ta

Zr

Ni Mo


-

-

-

-

-

94


0.5

0.2

0.2

0.02

0.1

98


Physical Performance:

Density

9.24g/cm3



Smelt

1370-1418



Heat Treatment

T*S

Y*S

El

Rm N/mm2

RP0.2N/mm2

A5 %

Anneal

760

350

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

Major Applications:

Chemical processes

Vacuum furnaces

Mechanical components in reducing environments


Characteristic as below:

Maintains excellent ductility during transient exposures to intermediate temperatures

Excellent resistance to pitting, corrosion and stress-corrosion cracking

Excellent resistance to knife-line and heat-affected zone attack

Excellent resistance to acetic, formic and phosphoric acids and other non-oxidizing media

Resistance to hydrochloric acid at all concentrations and temperatures

Thermal stability superior to alloy B-2
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