Alloy B-3

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Alloy B-3

information

Equivalent designations
UNS N10675
DIN W. Nr. 2.4600

Form	ASTM
Rod	B 335
Plate, sheet and strip	B 333, B 906
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

Chemical composition

%	Ni	Mo	Ni+Mo	Cr	Fe	W	Co	C	Mn	Si	P	S	Al	Ti	Cu	Nb	Ta	V	Zr
min	65.0	27.0	94.0	1.0	1.0
max		32.0	98.0	3.0	3.0	3.0	3.0	0.010	3.0	0.10	0.030	0.010	0.50	0.20	0.20	0.20	0.20	0.20	0.10

Physical properties

Density	9.22 g/cm3
Melting range	1370-1418℃

Features: Hastelloy B-3 has outstanding resistance to hydrochloric acid at all concentrations and temperatures. It also resists sulfuric, phosphoric, formic, acetic acids and other nonoxidizing media. It has excellent resistance to pitting corrosion, stress corrosion cracking, and knife line and weld heat-affected zone attack. Hastelloy B-3 has greater thermal stability than Hastelloy B-2.

Applications: Hastelloy B-3 is suitable for the applications where Hastelloy B-2 is required. Like Hastelloy B-2, Hastelloy B-3 should not be used in the presence of ferric or cupric salts as these salts may cause rapid corrosion attack.

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